電(dian)纜橋(qiao)架(jia)在(zai)我(wo)國(guo)的(de)應(ying)用(yong)只(zhi)有(you)十多年(nian),在(zai)歐美(mei)發達(da)也(ye)不過是(shi)幾(ji)十年。在(zai)壹個機(ji)房項(xiang)目中，比(bi)起(qi)造價(jia)昂(ang)貴、高(gao)科(ke)技(ji)的硬(ying)件和(he)軟件，橋(qiao)架(jia)顯(xian)的(de)很(hen)不起眼(yan)，也很(hen)少為人關註(zhu)，但(dan)它卻也是整(zheng)個布(bu)線(xian)工(gong)程中不可缺少(shao)的部(bu)分。那麽在施(shi)工(gong)中電(dian)纜橋(qiao)架(jia)安裝(zhuang)施(shi)工(gong)要求(qiu)及規(gui)範怎麽樣？

　　The application of cable trays in China has only been more than ten years, and in developed countries in Europe and America, it is only a few decades. In a computer room project, compared to expensive and high-tech hardware and software, cable trays may appear inconspicuous and receive little attention, but they are still an indispensable part of the entire cabling project. So what are the requirements and standards for the installation of cable trays during construction?

　　1 壹般(ban)規(gui)定(ding)　　1.1本章適(shi)用(yong)於(yu)電(dian)壓為10KV及以下新建擴(kuo)建(jian)的(de)壹般(ban)工(gong)業與民(min)用(yong)建築(zhu)電(dian)纜、橋(qiao)架(jia)安裝(zhuang)和橋(qiao)架(jia)內(nei)電(dian)纜敷(fu)設(she)

　　1 General Provisions 1.1 This chapter applies to the installation of cables, cable trays, and cable laying inside cable trays for newly constructed and expanded general industrial and civil buildings with a voltage of 10KV or below

　　1.2電(dian)纜橋(qiao)架(jia)安裝(zhuang)和橋(qiao)架(jia)內(nei)電(dian)纜敷(fu)設(she)，應(ying)按(an)已批準的設(she)計(ji)文(wen)件施(shi)工(gong)。

　　1.2 The installation of cable trays and the laying of cables inside the trays shall be carried out in accordance with the approved design documents.

　　1.3由支(zhi)、吊、托(tuo)架(jia)支(zhi)撐(cheng)的托(tuo)盤(pan)（槽）或梯(ti)架(jia)直(zhi)線(xian)段、彎(wan)通(tong)非(fei)直(zhi)線(xian)段組合(he)而(er)成(cheng)，敷(fu)設(she)電(dian)纜具有(you)連(lian)續(xu)性(xing)的(de)剛(gang)性結(jie)構系統，為電(dian)纜橋(qiao)架(jia)。見圖1.3

　　1.3 A rigid structural system consisting of trays (troughs) or ladder straight sections and curved non straight sections supported by supports, hangers, and brackets, with continuous cable laying, is called a cable tray. Refer to Figure 1.3

　　1.4　金(jin)屬電(dian)纜橋(qiao)架(jia)及其支(zhi)架(jia)和(he)引入(ru)或引出(chu)的(de)金(jin)屬電(dian)纜導管必(bi)須(xu)接地（PE）或接零(ling)（PEN）可靠，且必(bi)須(xu)符(fu)合(he)下(xia)列(lie)規(gui)定(ding):

　　1.4 Metal cable trays and their supports, as well as metal cable conduits introduced or led out, must be reliably grounded (PE) or grounded (PEN), and must comply with the following regulations:

　　1.4.1金(jin)屬電(dian)纜橋(qiao)架(jia)及支(zhi)架(jia)全長應不少於(yu)2處與接地（PE）或接零(ling)（PEN）幹(gan)線(xian)相連接；

　　1.4.1 The total length of metal cable trays and supports should be connected to the grounding (PE) or neutral (PEN) main line at no less than 2 points;

　　1.4.2非鍍(du)鋅(xin)電(dian)纜橋(qiao)架(jia)間連接板的(de)兩端跨(kua)接線(xian)銅(tong)芯接地線(xian)，接(jie)地(di)線(xian)小(xiao)允(yun)許(xu)截面(mian)積(ji)不小於(yu)4mm2；

　　1.4.2 Copper core grounding wire for the two ends of the connecting plate between non galvanized cable trays, with a minimum allowable cross-sectional area of not less than 4mm2 for the grounding wire;

　　1.4.３鍍(du)鋅(xin)電(dian)纜橋(qiao)架(jia)間連接板的(de)兩端不跨(kua)接接地線(xian)，但(dan)連(lian)接(jie)板兩(liang)端不少於(yu)2個有(you)防松(song)螺(luo)帽或防松(song)墊(dian)圈(quan)的(de)連接固定(ding)螺(luo)栓。

　　1.4.3 The two ends of the connecting plate between galvanized cable trays shall not be connected to the grounding wire, but there shall be no less than 2 connection fixing bolts with anti loosening nuts or anti loosening washers at both ends of the connecting plate.

　　1.4.5電(dian)纜敷(fu)設(she)嚴(yan)禁有(you)絞(jiao)擰(ning)、鎧裝壓扁(bian)、護(hu)層斷裂和表(biao)面(mian)嚴(yan)重(zhong)劃(hua)傷(shang)等缺陷(xian)。

　　1.4.5 Cable laying must strictly prohibit defects such as twisting, flattening of armor, breakage of protective layer, and severe surface scratches.

　　1.4.6電(dian)纜橋(qiao)架(jia)處(chu)如(ru)有(you)防火(huo)要求(qiu)的場所(suo)，應(ying)采取防火(huo)隔離措施(shi)。

　　If there are fire prevention requirements at the cable tray location, fire isolation measures should be taken.

　　2 施(shi)工(gong)準備(bei)

　　2. Construction preparation

　　2.1　技(ji)術準備(bei):

　　2.1 Technical Preparation:

　　2.1.1按(an)照(zhao)已批準的施(shi)工(gong)組織(zhi)設計(ji)（施(shi)工(gong)方(fang)案）進(jin)行技(ji)術、交底(di)。

　　2.1.1 Conduct technical and safety briefings in accordance with the approved construction organization design (construction plan).

　　2.1.2 施(shi)工(gong)執行工藝標(biao)準、圖集(ji)、規(gui)範齊全。

　　2.1.2 The construction execution process standards, drawings, and specifications are complete.

　　2.1.3電(dian)纜橋(qiao)架(jia)敷(fu)設(she)前(qian)，應(ying)檢查(zha)橋(qiao)架(jia)敷(fu)設(she)有(you)無與其他設(she)備(bei)、管(guan)線(xian)交叉或重疊(die)無法(fa)施(shi)工(gong)的地方(fang)，施(shi)工(gong)前應與各(ge)工(gong)種(zhong)、監(jian)理或建設單位及設計單位協商好，並(bing)作好(hao)記(ji)錄，以(yi)保證施(shi)工(gong)順(shun)利(li)進行。

　　Before laying cable trays, it is necessary to check whether there are any areas where the tray crosses or overlaps with other equipment or pipelines that cannot be constructed. Prior to construction, it is necessary to consult with various trades, supervisors, construction units, and design units, and make records to ensure smooth construction.

　　2.1.4根據施(shi)工(gong)圖或施(shi)工(gong)所(suo)用(yong)電(dian)纜應(ying)作好(hao)電(dian)纜牽(qian)引力的計(ji)算(suan)。

　　2.1.4 According to the construction drawings or the cables used for construction, the calculation of cable traction force should be carried out.

　　1.電(dian)纜橋(qiao)架(jia)規(gui)格及型號(hao)必(bi)須(xu)符(fu)合(he)設(she)計要(yao)求(qiu)，附件齊全；橋(qiao)架(jia)與(yu)配(pei)件、附件和(he)緊(jin)固(gu)件各(ge)種(zhong)型鋼(gang)均應(ying)采(cai)用(yong)鍍(du)鋅(xin)標準件。

　　1. The specifications and models of cable trays must meet the design requirements, and all accessories must be complete; All types of steel for cable trays, accessories, attachments, and fasteners should use galvanized standard parts.

　　2.各(ge)種(zhong)規(gui)格電(dian)纜橋(qiao)架(jia)的(de)直(zhi)線(xian)段、彎(wan)通(tong)、橋(qiao)架(jia)附件及支(zhi)、吊架(jia)立柱及型鋼(gang)等(deng)有(you)產(chan)品(pin)合格證，橋(qiao)架(jia)內(nei)外(wai)應光滑(hua)平整(zheng)，無棱刺(ci)，不應有(you)扭曲(qu)翹(qiao)邊等(deng)變形現(xian)象(xiang)。

　　2. The straight sections, bends, accessories, supports, hangers, columns, and steel sections of various specifications of cable trays should have product certification. The inside and outside of the tray should be smooth and flat, without edges or burrs, and there should be no distortion or warping.

　　3.橋(qiao)架(jia)訂(ding)貨或制(zhi)作應(ying)按(an)設(she)計(ji)要求(qiu)進行，不應有(you)誤(wu)，應(ying)反復校核以(yi)免(mian)造成浪費。

　　3. The ordering or production of cable trays should be carried out according to the design requirements, without errors, and should be repeatedly checked to avoid waste.

　　4.橋(qiao)架(jia)安裝(zhuang)選(xuan)擇需(xu)屏(ping)蔽電(dian)氣(qi)幹(gan)擾(rao)的(de)電(dian)纜回(hui)路，有(you)腐(fu)蝕的場(chang)所(suo)、易(yi)燃粉(fen)塵場所(suo)，應(ying)選(xuan)用(yong)無蓋無孔封閉型托(tuo)盤(pan)，當需要(yao)因地(di)制(zhi)宜的(de)場所(suo)，宜(yi)選(xuan)用(yong)組裝(zhuang)式(shi)托(tuo)盤(pan)或有(you)孔(kong)托(tuo)盤(pan)及梯(ti)架(jia)；在(zai)容(rong)易(yi)積(ji)灰和其它需(xu)遮蓋的環(huan)境(jing)或戶外場(chang)所(suo)，宜(yi)帶有(you)蓋板。低(di)壓電(dian)力電(dian)纜與(yu)控(kong)制(zhi)電(dian)纜共(gong)用(yong)同壹托(tuo)盤(pan)或梯(ti)架(jia)時(shi)，應(ying)選(xuan)用(yong)中間有(you)隔板的(de)托(tuo)盤(pan)或梯(ti)架(jia)；在(zai)托(tuo)盤(pan)、梯(ti)架(jia)分(fen)支(zhi)、引上(shang)、引下(xia)處應(ying)設(she)適當的彎(wan)通(tong)；因受(shou)空間條件限制(zhi)不便(bian)裝(zhuang)設彎(wan)通(tong)或有(you)特殊要求(qiu)時，可選(xuan)用(yong)軟連(lian)接(jie)板，鉸(jiao)接(jie)板；伸(shen)縮縫應(ying)設(she)置(zhi)伸縮(suo)板；連(lian)接兩(liang)段不同寬度(du)或高(gao)度(du)的托(tuo)盤(pan)、梯(ti)架(jia)可配(pei)置(zhi)變寬(kuan)或變高(gao)板。但(dan)在施(shi)工(gong)中，支(zhi)、吊架(jia)和(he)橋(qiao)架(jia)的(de)選(xuan)擇應(ying)依(yi)設計(ji)或工程布(bu)置(zhi)條件選(xuan)擇。

　　4. When installing cable trays, cable circuits that need to be shielded from electrical interference should be selected. In places with corrosion and flammable dust, uncovered and non perforated enclosed trays should be used. When suitable for local conditions, assembled trays or perforated trays and ladders should be selected; In environments or outdoor places that are prone to dust accumulation and require cover, it is advisable to have a cover plate. When low-voltage power cables and control cables share the same tray or ladder, a tray or ladder with a partition in the middle should be selected; Appropriate bends should be installed at the branching, leading up, and leading down points of pallets and ladders; When it is not convenient to install bends due to space constraints or there are special requirements, soft connecting plates and hinged plates can be used; Expansion joints should be equipped with expansion plates; Connecting two trays or ladders of different widths or heights can be configured with variable width or height boards. However, during construction, the selection of supports, hangers, and cable trays should be based on the design or engineering layout conditions.

　　5.托(tuo)盤(pan)、梯(ti)架(jia)的(de)寬(kuan)和高(gao)度(du)，應按(an)下(xia)列(lie)要求(qiu)選(xuan)擇:

　　5. The width and height of pallets and ladders should be selected according to the following requirements:

　　(1)電(dian)纜在(zai)橋(qiao)架(jia)內(nei)的(de)填充(chong)率(lv)，電(dian)力電(dian)纜不應大(da)於(yu)40%；控(kong)制(zhi)電(dian)纜不應大(da)於(yu)50%。並應留有(you)壹定的(de)備(bei)用(yong)空位，以(yi)便(bian)今(jin)後為增添電(dian)纜用(yong)；

　　(1) The filling rate of cables in cable trays should not exceed 40% for power cables; The control cable should not exceed 50%. And there should be some spare space left for future cable additions;

　　(2)所(suo)選(xuan)托(tuo)盤(pan)、橋(qiao)架(jia)規(gui)格的承(cheng)載能(neng)力應滿(man)足(zu)規(gui)定(ding)。其工作均布(bu)荷(he)載不應大(da)於(yu)所(suo)選(xuan)托(tuo)盤(pan)、梯(ti)架(jia)荷(he)載等(deng)級(ji)的(de)額定均布(bu)荷(he)載；

　　(2) The bearing capacity of the selected tray and bridge specifications should meet the requirements. The uniformly distributed load of its work should not exceed the rated uniformly distributed load of the selected pallet and ladder load level;

　　(3)工(gong)作均布(bu)荷(he)載下(xia)的相對(dui)撓(nao)度(du)不宜大(da)於(yu)1/200。

　　(3) The relative deflection under uniformly distributed load should not exceed 1/200.

　　托(tuo)盤(pan)、梯(ti)架(jia)直(zhi)線(xian)段，可按(an)單件標(biao)準長度選(xuan)擇。單件標(biao)準長度壹般(ban)規(gui)定(ding)為2、3、4、6m。托(tuo)盤(pan)、梯(ti)架(jia)的(de)寬(kuan)度與(yu)高(gao)度(du)常用(yong)規(gui)格尺寸系列(lie)如表(biao)2.4-1

　　Tray and ladder straight sections can be selected according to the standard length of a single piece. The standard length of a single piece is generally specified as 2, 3, 4, and 6 meters. The commonly used specifications and dimension series for the width and height of pallets and ladders are shown in Table 2.4-1

　　註(zhu):符(fu)號(hao)△表(biao)示常用(yong)規(gui)格。

　　Note: The symbol △ represents commonly used specifications.

　　各類(lei)彎(wan)通(tong)及附件規(gui)格，應適(shi)合工(gong)程布(bu)置(zhi)條件，並(bing)與托(tuo)盤(pan)、梯(ti)架(jia)配(pei)套(tao)。

　　All types of bends and accessory specifications should be suitable for the engineering layout conditions and matched with pallets and ladders.

　　支(zhi)、吊架(jia)規(gui)格選(xuan)擇，應(ying)按(an)托(tuo)盤(pan)、梯(ti)架(jia)規(gui)格層數(shu)、跨(kua)距等條件配(pei)置(zhi)，並應(ying)滿(man)足(zu)荷(he)載的(de)要求(qiu)。

　　The selection of support and hanger specifications should be based on the number of layers, span, and other conditions of the pallet and ladder, and should meet the requirements of the load.

　　鋼制(zhi)橋(qiao)架(jia)的(de)表(biao)面(mian)處(chu)理(li)方(fang)式，應(ying)按(an)工(gong)程環(huan)境(jing)條件、重(zhong)要性(xing)、耐久性(xing)和技(ji)術經濟(ji)性(xing)等(deng)因素(su)進行選(xuan)擇。壹般(ban)情(qing)況宜(yi)按(an)表(biao)2.4-2選(xuan)擇適(shi)用(yong)工程環(huan)境(jing)條件的(de)防腐(fu)處理方(fang)式。當采用(yong)表(biao)中“T”類(lei)防腐(fu)方(fang)式為鍍(du)鋅(xin)鎳(nie)合金(jin)、高(gao)純(chun)化(hua)等(deng)其它防腐(fu)處理的(de)橋(qiao)架(jia)，應(ying)按(an)規(gui)定(ding)試驗(yan)驗(yan)證，並(bing)應(ying)具有(you)明(ming)確(que)的(de)技(ji)術質量指標(biao)及檢測方(fang)式。

　　The surface treatment method for steel cable trays should be selected based on factors such as engineering environmental conditions, importance, durability, and technical economy. Generally, it is advisable to choose the anti-corrosion treatment method that is suitable for the engineering environmental conditions according to Table 2.4-2. When using the "T" anti-corrosion method in the table, such as galvanized nickel alloy, high-purity or other anti-corrosion treatments, the bridge should be tested and verified according to regulations, and should have clear technical quality indicators and testing methods.

　　註(zhu):符(fu)號(hao)“○”表(biao)示防腐(fu)類(lei)別(bie)。

　　Note: The symbol "○" indicates the recommended anti-corrosion category.

　　6.橋(qiao)架(jia)的(de)外(wai)觀檢(jian)查(zha)

　　6. Appearance inspection of bridge frame

　　橋(qiao)架(jia)產(chan)品(pin)包裝箱內應有(you)裝(zhuang)箱清(qing)單、產(chan)品(pin)合格證及出(chu)廠(chang)檢(jian)驗報(bao)告(gao)。托(tuo)盤(pan)、梯(ti)架(jia)板材(cai)厚(hou)度應(ying)滿(man)足(zu)表(biao)2.6的(de)規(gui)定(ding)。表(biao)面(mian)防腐(fu)層材(cai)料(liao)應符(fu)合(he)現(xian)行有(you)關標(biao)準的規(gui)定(ding)。

　　The packaging box for bridge products should include a packing list, product certification, and factory inspection report. The thickness of pallets and ladder boards should meet the requirements of Table 2.6. The surface anti-corrosion coating material should comply with the relevant national standards currently in effect.

　　熱浸鍍(du)鋅(xin)的托(tuo)盤(pan)、橋(qiao)架(jia)鍍(du)層表(biao)面(mian)應(ying)均勻(yun)，無毛刺(ci)、過燒、掛(gua)灰、傷(shang)痕(hen)、局部未(wei)鍍(du)鋅(xin)（直(zhi)徑(jing)2mm以(yi)上(shang)）等(deng)缺陷(xian)，不得有(you)影(ying)響(xiang)安裝(zhuang)的鋅(xin)瘤(liu)。螺(luo)紋(wen)的鍍(du)層應(ying)光滑(hua)，螺(luo)栓連(lian)接(jie)件應(ying)能擰(ning)入。

　　The surface of hot-dip galvanized trays and cable trays should be uniform, without defects such as burrs, overburning, hanging dust, scars, and partial non galvanizing (diameter of 2mm or more), and there should be no zinc nodules that affect installation. The coating of the thread should be smooth, and the bolt connection should be able to be screwed in.

　　電(dian)鍍(du)鋅(xin)的鋅(xin)層表(biao)面(mian)應(ying)光滑(hua)均勻(yun)，致密。不得有(you)起(qi)皮、氣(qi)泡(pao)、花(hua)斑(ban)、局部未(wei)鍍(du)、劃傷(shang)等缺陷(xian)。

　　The surface of the zinc layer of electroplated zinc should be smooth, uniform, and dense. There shall be no defects such as peeling, bubbles, flower spots, partial uncoated areas, scratches, etc.

　　噴塗(tu)應(ying)平整(zheng)、光滑(hua)、均勻(yun)、不起皮、無氣(qi)泡(pao)水(shui)泡(pao)。

　　The spraying should be smooth, even, without peeling or bubbles.

　　橋(qiao)架(jia)焊(han)縫表(biao)面(mian)均勻(yun)，不得有(you)漏(lou)焊(han)、裂紋、夾渣(zha)、燒穿、弧(hu)坑等(deng)缺陷(xian)。

　　The surface of the bridge welding seam should be uniform and free of defects such as missed welding, cracks, slag inclusion, burn through, arc craters, etc.

　　橋(qiao)架(jia)螺(luo)栓孔(kong)徑(jing)，在(zai)螺(luo)桿(gan)直(zhi)徑(jing)不大(da)於(yu)M16時，可比(bi)螺(luo)桿(gan)直(zhi)徑(jing)大(da)2mm。

　　The hole diameter of the bridge bolt can be 2mm larger than the screw diameter when the screw diameter is not greater than M16.

　　螺(luo)栓連(lian)接(jie)孔(kong)的孔距(ju)允(yun)許(xu)偏差:同壹組內(nei)相鄰兩孔(kong)間距±0.7mm,同壹組內(nei)任意兩孔(kong)間距±1mm;相鄰兩組的(de)端孔(kong)間距±1.2mm。

　　The allowable deviation for the distance between bolt connection holes is: the distance between adjacent holes in the same group is ± 0.7mm, the distance between any two holes in the same group is ± 1mm, and the distance between end holes in adjacent groups is ± 1.2mm.

　　7.膨脹(zhang)螺(luo)栓:應(ying)根(gen)據(ju)允(yun)許(xu)拉力和剪(jian)力進行選(xuan)擇；可按(an)計(ji)劃(hua)驗收，絲扣應(ying)完(wan)好無損。

　　7. Expansion bolts: should be selected based on allowable tensile and shear forces; The inspection can be carried out according to the plan, and the thread should be intact and undamaged.

　　8.電(dian)纜應(ying)有(you)合(he)格證和(he)“CCC”認證(zheng)標誌(zhi)，並應(ying)有(you)“CCC”認(ren)證(zheng)復(fu)印(yin)件；每(mei)盤(pan)電(dian)纜上(shang)應(ying)標明(ming)規(gui)格、型號(hao)、電(dian)壓等(deng)級(ji)、長度及出(chu)廠(chang)日期(qi)電(dian)纜相應完好無損。

　　8. The cable should have a certificate of conformity and the "CCC" certification mark, and should have a copy of the "CCC" certification; Each cable reel should indicate the specifications, model, voltage level, length, and date of manufacture, and the cable should be intact and undamaged accordingly.

　　9.電(dian)纜外(wai)觀(guan)完好(hao)無損，鎧裝無銹蝕、無機(ji)械操(cao)作，無皺折和(he)扭曲(qu)現(xian)象(xiang)。油(you)浸電(dian)纜應(ying)密封良(liang)好，無漏油及滲油現(xian)象(xiang)。橡(xiang)套(tao)及塑(su)料(liao)電(dian)纜外(wai)皮及絕(jue)緣(yuan)層無老化(hua)及裂紋。電(dian)纜端頭(tou)密封良(liang)好。

　　9. The appearance of the cable is intact and undamaged, the armor is not corroded, there is no mechanical operation, and there is no wrinkling or twisting phenomenon. Oil immersed cables should be well sealed without oil leakage or seepage. The rubber sleeve and plastic cable sheath and insulation layer have no aging or cracks. The cable end is well sealed.

　　10.其它附屬材料(liao)；電(dian)纜標(biao)示牌、油漆(qi)、汽油(you)、封(feng)鉛、硬(ying)脂酸(suan)白布(bu)帶(dai)、橡(xiang)皮包(bao)布(bu)、黑(hei)包布(bu)、塑(su)料(liao)絕(jue)緣(yuan)帶(dai)等均應(ying)符(fu)合(he)要(yao)求(qiu)

　　10. Other ancillary materials; Cable signs, paint, gasoline, lead sealing, stearic acid white cloth tape, rubber wrap, black wrap, plastic insulation tape, etc. should all meet the requirements

　　3 施(shi)工(gong)工藝

　　3 Construction Techniques

　　3.1　電(dian)纜橋(qiao)架(jia)安裝(zhuang)施(shi)工(gong)工藝

　　3.1 Construction process for cable tray installation

　　3.1.1電(dian)纜橋(qiao)架(jia)安裝(zhuang)工藝流(liu)程:

　　3.1.1 Cable tray installation process:

　　定位放線(xian)→預(yu)埋鐵件或膨脹(zhang)螺(luo)栓→支(zhi)、吊、托(tuo)架(jia)安裝(zhuang)→橋(qiao)架(jia)安裝(zhuang)→保護(hu)接地(di)安裝(zhuang)

　　Positioning and laying out → Pre embedded iron parts or expansion bolts → Installation of supports, hangers, and brackets → Installation of cable trays → Installation of protective grounding

　　3.1.2根據(ju)施(shi)工(gong)圖確定(ding)始端到(dao)終(zhong)端位置(zhi)，沿圖紙標定走向(xiang)，找好(hao)水平、垂(chui)直(zhi)、彎(wan)通(tong)，用(yong)粉(fen)線(xian)袋(dai)或畫線(xian)沿(yan)橋(qiao)架(jia)走(zou)向(xiang)在墻(qiang)壁(bi)、頂棚、地(di)面(mian)、梁、板、柱(zhu)等處(chu)彈線(xian)或畫線(xian)，並(bing)均勻(yun)檔距(ju)畫出(chu)支(zhi)、吊、托(tuo)架(jia)位置(zhi)。

　　3.1.2 Determine the starting and ending positions according to the construction drawing, mark the direction along the drawing, find the horizontal, vertical, and curved lines, use a powder line bag or draw lines along the bridge direction to snap or draw lines on walls, ceilings, floors, beams, slabs, columns, etc., and draw the positions of supports, hangers, and brackets evenly spaced.

　　3.1.3預(yu)埋鐵件或膨脹(zhang)螺(luo)栓

　　3.1.3 Pre embedded iron parts or expansion bolts

　　(1) 預(yu)埋鐵件的(de)自制(zhi)加(jia)工不應小(xiao)於(yu)120mm×80mm×6mm，做(zuo)法(fa)如(ru)本標準6.3.7.2圖6.3.7.2。其錨固(gu)圓鋼的(de)直(zhi)徑(jing)不小於(yu)10mm。

　　(1) The self-made processing of embedded iron parts should not be less than 120mm × 80mm × 6mm, as shown in Figure 6.3.7.2 of this standard. The diameter of the anchored round steel shall not be less than 10mm.

　　(2) 緊(jin)密配(pei)合土(tu)建結(jie)構的(de)施(shi)工(gong)，將預(yu)埋鐵件平面(mian)緊(jin)貼(tie)模板，將錨固(gu)圓鋼用(yong)綁(bang)紮或焊(han)接的方(fang)法(fa)固(gu)定在(zai)結(jie)構內(nei)的鋼(gang)筋上(shang)；待混(hun)凝土(tu)模板拆除後(hou)，預(yu)埋鐵件平面(mian)外(wai)露，將支(zhi)架(jia)、吊(diao)架(jia)或托(tuo)架(jia)焊(han)接在上(shang)面(mian)進(jin)行固定。

　　(2) Closely cooperate with the construction of civil engineering structures, tightly adhere the embedded iron parts to the formwork, and fix the anchoring round steel to the steel bars inside the structure by binding or welding; After the concrete formwork is removed, the embedded iron parts should be exposed on the surface, and the brackets, hangers or brackets should be welded on top for fixation.

　　(3) 根據(ju)支(zhi)架(jia)承(cheng)受(shou)的(de)荷(he)重，選(xuan)擇相應的膨脹(zhang)螺(luo)栓及鉆頭；埋好螺(luo)栓後(hou)，可用(yong)螺(luo)母配(pei)上相應的墊(dian)圈(quan)將支(zhi)架(jia)或吊架(jia)直(zhi)接(jie)固(gu)定(ding)在(zai)金(jin)屬膨脹(zhang)螺(luo)栓上(shang)，可參見本標準6.3.7.7圖表(biao)。

　　(3) Select the corresponding expansion bolts and drill bits based on the load borne by the bracket; After burying the bolts, the bracket or hanger can be directly fixed to the metal expansion bolt with nuts and corresponding washers, as shown in Figure 6.3.7.7 of this standard.

　　4.支(zhi)、吊架(jia)安裝(zhuang)

　　4. Installation of supports and hangers

　　(1) 支(zhi)架(jia)與(yu)吊(diao)架(jia)所(suo)用(yong)鋼材(cai)應(ying)平直(zhi)，無顯(xian)著(zhu)扭曲(qu)。下料後(hou)長短偏(pian)差(cha)應(ying)在3mm範圍內(nei)，切(qie)口處(chu)應無卷邊、毛刺(ci)；

　　(1) The steel used for brackets and hangers should be straight and free from significant distortion. The length deviation after cutting should be within 3mm, and there should be no curled edges or burrs at the incision;

　　(2) 鋼支(zhi)架(jia)與(yu)吊(diao)架(jia)應(ying)焊(han)接牢固，無顯(xian)著(zhu)變(bian)形，焊(han)接前厚(hou)度超(chao)過(guo)4mm的(de)支(zhi)架(jia)、鐵(tie)件應(ying)打坡(po)口，焊(han)縫均勻(yun)平整(zheng)，焊(han)縫長度應符(fu)合(he)要(yao)求(qiu)，不得出(chu)現(xian)裂紋、咬邊(bian)、氣(qi)孔(kong)、凹(ao)陷、漏(lou)焊(han)等缺陷(xian)；

　　(2) Steel brackets and hangers should be welded firmly without significant deformation. Brackets and iron parts with a thickness exceeding 4mm before welding should be chamfered, and the weld seam should be uniform and smooth. The weld seam length should meet the requirements and should not have defects such as cracks, undercutting, porosity, indentation, or missed welding;

　　(3)支(zhi)架(jia)與(yu)吊(diao)架(jia)應(ying)安裝(zhuang)牢固，保(bao)證橫(heng)平豎(shu)直(zhi)，在(zai)有(you)坡(po)度的建(jian)築(zhu)物(wu)上安裝(zhuang)支(zhi)架(jia)與(yu)吊(diao)架(jia)應(ying)與(yu)建築(zhu)物(wu)的坡(po)度、角度(du)壹致；

　　(3) The brackets and hangers should be installed firmly, ensuring horizontal and vertical alignment. When installing brackets and hangers on buildings with slopes, they should be consistent with the slope and angle of the building;

　　支(zhi)架(jia)與(yu)吊(diao)架(jia)的(de)規(gui)格壹般(ban)不應小(xiao)於(yu)扁(bian)鋼(gang)30mm×3mm；角鋼25mm×25mm×3mm；

　　The specifications of brackets and hangers should generally not be less than 30mm × 3mm for flat steel and 25mm × 25mm × 3mm for angle steel;

　　（5）嚴(yan)禁用(yong)電(dian)氣(qi)焊(han)切割鋼(gang)結(jie)構或輕(qing)鋼龍(long)骨(gu)任何部位；

　　(5) It is strictly prohibited to use electrical welding to cut any part of steel structures or light steel joists;

　　（6）吊(diao)具應(ying)采用(yong)定型產(chan)品(pin)，並應有(you)各(ge)自獨(du)立的吊裝(zhuang)卡具或支(zhi)撐(cheng)系統。

　　(6) Universal lifting devices should use standardized products and have their own independent lifting fixtures or support systems.

　　（7）固(gu)定(ding)支(zhi)點間距壹般(ban)不應大(da)於(yu)1.5～2m。在進出(chu)接(jie)線(xian)盒(he)、箱、櫃(gui)、轉(zhuan)角(jiao)、轉(zhuan)彎(wan)和(he)變(bian)形縫兩(liang)端及丁字接頭(tou)的(de)三(san)端500mm以(yi)內(nei)應設(she)固(gu)定(ding)支(zhi)持點(dian)。

　　(7) The distance between fixed support points should generally not exceed 1.5-2m. Fixed support points should be set within 500mm at both ends of the entrance and exit junction boxes, boxes, cabinets, corners, bends, and deformation joints, as well as at the three ends of the T-shaped joint.

　　（8）嚴禁用(yong)木磚(zhuan)固定(ding)支(zhi)架(jia)與(yu)吊(diao)架(jia)。

　　(8) It is strictly prohibited to use wooden bricks to fix brackets and hangers.

　　5.橋(qiao)架(jia)安裝(zhuang)

　　5. Bridge installation

　　(1) 電(dian)纜橋(qiao)架(jia)水(shui)平敷(fu)設(she)時(shi)，支(zhi)撐(cheng)跨(kua)距壹般(ban)為1.5～3m，電(dian)纜橋(qiao)架(jia)垂(chui)直(zhi)敷(fu)設(she)時(shi)固(gu)定點間距不宜大(da)於(yu)2m。橋(qiao)架(jia)彎(wan)通(tong)彎(wan)曲(qu)半(ban)徑(jing)不大(da)於(yu)300mm時，應在距彎(wan)曲(qu)段與(yu)直(zhi)線(xian)段結(jie)合處(chu)300～600mm的直(zhi)線(xian)段側(ce)設(she)置(zhi)壹個支(zhi)、吊架(jia)。當彎(wan)曲(qu)半(ban)徑(jing)大(da)於(yu)300mm時，還應在彎(wan)通(tong)中部增(zeng)設(she)壹個支(zhi)、吊架(jia)。支(zhi)、吊架(jia)和(he)橋(qiao)架(jia)安裝(zhuang)必(bi)須(xu)考慮(lv)電(dian)纜敷(fu)設(she)彎(wan)曲(qu)半(ban)徑(jing)滿足(zu)規(gui)範小彎(wan)曲(qu)半(ban)徑(jing)。見表(biao)3.1.5。

　　(1) When laying cable trays horizontally, the support span is generally 1.5-3m. When laying cable trays vertically, the spacing between fixed points should not exceed 2m. When the bending radius of the tray is not greater than 300mm, a support or hanger should be set on the side of the straight section 300-600mm away from the junction of the curved section and the straight section. When the bending radius is greater than 300mm, a support or hanger should be added in the middle of the bend. The installation of supports, hangers, and cable trays must consider that the bending radius of cable laying meets the minimum bending radius specified in the specifications. See Table 3.1.5.

　　註(zhu)為電(dian)纜外(wai)徑(jing)。

　　Note the outer diameter of the cable.

　　(2)門型角(jiao)鋼(gang)支(zhi)架(jia)的(de)安裝(zhuang):梯(ti)型橋(qiao)架(jia)沿(yan)墻(qiang)垂(chui)直(zhi)敷(fu)設(she)，可使用(yong)門型角(jiao)鋼(gang)支(zhi)架(jia)，支(zhi)架(jia)的(de)固(gu)定應(ying)盡(jin)可能配(pei)合土(tu)建施(shi)工(gong)預(yu)埋。如圖3.1.5（2-1），也可在土(tu)建施(shi)工(gong)中預(yu)埋開角螺(luo)栓，用(yong)開角螺(luo)栓固(gu)定(ding)支(zhi)架(jia)如(ru)圖3.1.5（2-1），也可以采(cai)用(yong)膨脹(zhang)螺(luo)栓固(gu)定(ding)。

　　(2) Installation of door type angle steel bracket: The ladder type bridge is vertically laid along the wall, and door type angle steel bracket can be used. The fixation of the bracket should be embedded as much as possible in conjunction with civil construction. As shown in Figure 3.1.5 (2-1), angle bolts can also be pre embedded in civil construction to fix the bracket as shown in Figure 3.1.5 (2-1), or expansion bolts can be used for fixation.

　　圖3.1.5.(2-1) 角鋼(gang)支(zhi)架(jia)預(yu)埋安裝(zhuang)

　　Figure 3.1.5. (2-1) Pre embedded installation of angle steel bracket

　　圖3.1.5.(2-２) 鋼支(zhi)架(jia)預(yu)埋地腳螺(luo)栓安裝(zhuang)

　　Figure 3.1.5. (2-2) Installation of pre embedded anchor bolts for steel supports

　　(3)梯(ti)型角(jiao)鋼(gang)支(zhi)架(jia)的(de)安裝(zhuang):橋(qiao)架(jia)沿(yan)墻(qiang)、柱水(shui)平安裝(zhuang)時，托(tuo)壁需(xu)安裝(zhuang)在異(yi)型鋼(gang)立柱上，而(er)立柱要安裝(zhuang)在梯(ti)型角(jiao)鋼(gang)支(zhi)架(jia)上(shang)，使柱和墻上(shang)的(de)橋(qiao)架(jia)固(gu)定(ding)支(zhi)架(jia)（或托(tuo)臂）在(zai)同壹條直(zhi)線(xian)上(shang)。制(zhi)作見圖和表(biao)3.1.5（3）底(di)架(jia)與(yu)門型架(jia)焊(han)接時，焊(han)角高(gao)度(du)5mm。

　　(3) Installation of ladder type angle steel bracket: When the bridge is installed horizontally along the wall or column, the support wall needs to be installed on the special-shaped steel column, and the column needs to be installed on the ladder type angle steel bracket, so that the fixed bracket (or support arm) of the column and the bridge on the wall are in the same straight line. When welding the chassis and door frame as shown in Figure 3.1.5 (3), the welding angle height should be 5mm.

　　表(biao) 3.1.5（3）梯(ti)型角(jiao)鋼(gang)支(zhi)架(jia)制(zhi)作尺(chi)寸表(biao)（mm）

　　Table 3.1.5 (3) Dimensional Table for Manufacturing Ladder Type Angle Steel Supports (mm)

　　(4)電(dian)纜橋(qiao)架(jia)立柱側(ce)壁(bi)式(shi)安裝(zhuang):立柱是直(zhi)接(jie)支(zhi)承托(tuo)臂的(de)部件，分(fen)工字(zi)鋼槽(cao)鋼、角(jiao)鋼、異(yi)型鋼(gang)立柱；立柱可以在(zai)墻上(shang)、柱上安裝(zhuang)、也可懸吊(diao)在(zai)梁板上(shang)安裝(zhuang)。做(zuo)法(fa)在(zai)混凝土(tu)可預(yu)埋鐵件；砌(qi)體可砌築(zhu)預(yu)制(zhi)砌塊(kuai)；也可以采(cai)用(yong)膨脹(zhang)螺(luo)栓但(dan)必(bi)須(xu)在混凝土(tu)強度(du)C20或磚(zhuan)強度(du)在(zai)MU10以(yi)上的磚(zhuan)砌體(ti)上(shang)，作法(fa)可參照(zhao)3.1.5（4a、b、c、d、e、f）。

　　(4) Side wall installation of cable tray columns: The columns are components that directly support the support arms, and are divided into steel channel steel, angle steel, and special-shaped steel columns; Columns can be installed on walls, columns, or suspended from beams and slabs. The method involves embedding iron components in concrete; Prefabricated masonry blocks can be used for masonry construction; Expansion bolts can also be used, but they must be used on brick masonry with concrete strength C20 or brick strength above MU10. The method can refer to section 3.1.5 (4a, b, c, d, e, f).

　　圖3.1.5（4c）異(yi)型鋼(gang)立柱在墻(qiang)上側(ce)壁(bi)安裝(zhuang)作法(fa)之壹

　　Figure 3.1.5 (4c) One of the installation methods for special-shaped steel columns on the side walls of the wall

　　(5)電(dian)纜橋(qiao)架(jia)應(ying)敷(fu)設(she)在(zai)易(yi)燃易(yi)爆(bao)氣(qi)體(ti)管(guan)和(he)熱力管道(dao)的下(xia)方(fang)，當設計(ji)無要求(qiu)時，與管(guan)道(dao)的小(xiao)凈距(ju)，符(fu)合(he)3.1.5（5）的(de)規(gui)定(ding)。

　　(5) Cable trays should be laid below flammable and explosive gas pipelines and thermal pipelines. When there are no design requirements, the minimum clear distance from the pipeline should comply with the provisions of 3.1.5 (5).

　　表(biao)示3.1.5（5）與管(guan)道(dao)的小(xiao)凈距(ju)

　　Indicate the minimum clear distance between 3.1.5 (5) and the pipeline

　　6 托(tuo)臂安裝(zhuang):

　　Installation of Arm 6:

　　托(tuo)臂是(shi)直(zhi)接(jie)支(zhi)承托(tuo)盤(pan)、梯(ti)架(jia)單獨(du)固定(ding)的剛(gang)性部(bu)件，托(tuo)臂有(you)螺(luo)栓固(gu)定(ding)可預(yu)埋螺(luo)栓，也(ye)可采用(yong)膨脹(zhang)螺(luo)栓，也(ye)可卡接(jie)，如圖3.1.6（1）、（2）、（3）、（4）、（5）。

　　The support arm is a rigid component that directly supports the tray and ladder frame and is fixed separately. The support arm can be fixed with bolts that can be embedded, expansion bolts, or clamped, as shown in Figure 3.1.6 (1), (2), (3), (4), and (5).

　　3.2 橋(qiao)架(jia)安裝(zhuang)

　　3.2 Bridge installation

　　1.直(zhi)線(xian)段鋼(gang)制(zhi)電(dian)纜橋(qiao)架(jia)長度超過(guo)30m，鋁(lv)合(he)金(jin)或玻(bo)璃鋼制(zhi)電(dian)纜橋(qiao)架(jia)長度超過(guo)15m應(ying)設(she)有(you)伸(shen)縮(suo)節(jie)，跨(kua)越(yue)伸(shen)縮(suo)縫處(chu)設(she)置(zhi)補償(chang)裝置(zhi)，可用(yong)帶伸(shen)縮(suo)節(jie)的橋(qiao)架(jia)。

　　1. If the length of a straight steel cable tray exceeds 30m, or if the length of an aluminum alloy or fiberglass cable tray exceeds 15m, expansion joints should be installed. Compensation devices should be installed at the expansion joint crossing points, and cable trays with expansion joints can be used.

　　2.橋(qiao)架(jia)與(yu)支(zhi)架(jia)間螺(luo)栓、橋(qiao)架(jia)連(lian)接(jie)板螺(luo)栓緊(jin)固(gu)無遺漏(lou)，螺(luo)母位於(yu)橋(qiao)架(jia)外(wai)側(ce)，當鋁合(he)金(jin)橋(qiao)架(jia)與(yu)鋼(gang)支(zhi)架(jia)固(gu)定(ding)時，有(you)相互(hu)間絕(jue)緣(yuan)防電(dian)化(hua)措施(shi)腐(fu)蝕措施(shi)，壹般(ban)可墊(dian)石(shi)棉墊(dian)。

　　2. The bolts between the bridge and the bracket, as well as the bolts of the bridge connecting plate, are tightened without omission, and the nuts are located on the outside of the bridge. When the aluminum alloy bridge and the steel bracket are fixed, there are mutual insulation and corrosion prevention measures, and asbestos pads can generally be used.

　　3.敷(fu)設(she)在(zai)豎(shu)井內和穿越(yue)不同防火(huo)區(qu)的橋(qiao)架(jia)，應(ying)按(an)設(she)計(ji)要求(qiu)位置(zhi)，有(you)防火(huo)隔離措施(shi)，電(dian)纜橋(qiao)架(jia)在(zai)電(dian)氣(qi)豎(shu)井(jing)內(nei)敷(fu)設(she)可采用(yong)角鋼(gang)固(gu)定(ding)，見圖3.1.8。

　　3. Cable trays laid in vertical shafts and crossing different fire zones should be located according to design requirements and have fire isolation measures. Cable trays laid in electrical vertical shafts can be fixed with angle steel, as shown in Figure 3.1.8.

　　4.電(dian)纜橋(qiao)架(jia)在(zai)穿(chuan)過防火(huo)墻及防火(huo)樓板時(shi)，應采(cai)取防火(huo)隔離措施(shi)，防止火(huo)災沿(yan)線(xian)路延燃；防火(huo)隔離墻(qiang)、板，應(ying)配(pei)合土(tu)建施(shi)工(gong)預(yu)留(liu)洞(dong)口(kou)，在洞(dong)口(kou)處預(yu)埋好護邊角(jiao)鋼(gang)，施(shi)工(gong)時根據電(dian)纜敷(fu)設(she)的(de)層數(shu)和(he)根數用(yong)L50×50×5角鋼(gang)作固(gu)定(ding)框，同時將固定(ding)櫃(gui)焊(han)在護邊(bian)角(jiao)鋼(gang)上；也(ye)可以先(xian)作好(hao)框在(zai)土(tu)建施(shi)工(gong)中砌體(ti)或澆(jiao)灌混凝土(tu)時安裝(zhuang)在墻(qiang)、板中。

　　4. When cable trays pass through firewalls and fire-resistant floor slabs, fire-resistant isolation measures should be taken to prevent fires from spreading along the line; Fire isolation walls and panels should be equipped with reserved openings for civil construction, and edge protection angle steel should be pre embedded at the openings. During construction, L50 × 50 × 5 angle steel should be used as a fixed frame according to the number of layers and cables laid, and the fixed cabinet should be welded to the edge protection angle steel; Alternatively, the frame can be installed in the wall or slab during masonry or concrete pouring in civil construction.

　　3.3 橋(qiao)架(jia)的(de)接(jie)地，當設計(ji)允(yun)許(xu)利用(yong)橋(qiao)架(jia)系統構(gou)成(cheng)接地(di)幹線(xian)回(hui)路時，應(ying)符(fu)合(he)下(xia)列(lie)要求(qiu):

　　3.3 When the design allows the use of the bridge system to form a grounding main circuit, the grounding of the bridge should meet the following requirements:

　　1. 金(jin)屬電(dian)纜橋(qiao)架(jia)及其支(zhi)架(jia)引入(ru)或引出(chu)的(de)金(jin)屬電(dian)纜導管必(bi)須(xu)接地（PE）或接零(ling)（PEN）可靠，且必(bi)須(xu)符(fu)合(he)下(xia)列(lie)規(gui)範:

　　1. Metal cable trays and their brackets must have reliable grounding (PE) or neutral (PEN) for the metal cable conduits introduced or led out, and must comply with the following specifications:

　　(1) 金(jin)屬電(dian)纜橋(qiao)架(jia)及其支(zhi)架(jia)全長，與接地(di)（PE）或接零(ling)（PEN）幹(gan)線(xian)相連接不小於(yu)2處，使整(zheng)個橋(qiao)架(jia)為壹個電(dian)氣(qi)通(tong)路。

　　(1) The entire length of the metal cable tray and its support shall be connected to the grounding (PE) or neutral (PEN) main line at no less than 2 points, making the entire tray an electrical pathway.

　　(2) 非鍍(du)鋅(xin)電(dian)纜橋(qiao)架(jia)間連接的兩(liang)端跨(kua)接銅芯接地線(xian)，接(jie)地(di)線(xian)小(xiao)允(yun)許(xu)截面(mian)積(ji)不小於(yu)4mm2。

　　(2) The two ends of the non galvanized cable tray are connected with copper core grounding wires, and the minimum allowable cross-sectional area of the grounding wire is not less than 4mm2.

　　(3) 鍍(du)鋅(xin)電(dian)纜橋(qiao)架(jia)間連接板的(de)兩端可不跨(kua)接接地線(xian)，但(dan)連(lian)接(jie)板兩(liang)端不少於(yu)2個有(you)防松(song)螺(luo)帽或防松(song)墊(dian)圈(quan)的(de)連接固定(ding)螺(luo)栓。

　　(3) The two ends of the connecting plate between galvanized cable trays may not be connected to the grounding wire, but there shall be no less than 2 fixing bolts with anti loosening nuts or anti loosening washers at both ends of the connecting plate.

　　2. 盤(pan)、梯(ti)架(jia)端部(bu)之間連接電(dian)阻(zu)不應大(da)於(yu)0.00033Ω並應用(yong)等電(dian)位聯結(jie)測試儀(yi)（導通儀(yi)）或微Ω表(biao)測試，測試應(ying)在(zai)連接(jie)點(dian)的(de)兩(liang)側(ce)進(jin)行，對(dui)整(zheng)個橋(qiao)架(jia)全長的兩端連(lian)接(jie)電(dian)阻(zu)不應大(da)於(yu)0.5Ω或由設計(ji)決定(ding)，否(fou)則(ze)應(ying)增加(jia)接地(di)點，以滿足(zu)要求(qiu)。接地孔(kong)應(ying)塗(tu)層，與(yu)塗(tu)層接(jie)觸(chu)的(de)螺(luo)栓有(you)壹側(ce)的(de)平墊(dian)應(ying)使用(yong)帶爪(zhao)的(de)專(zhuan)用(yong)接地(di)墊(dian)圈(quan)。

　　2. The connection resistance between the ends of the tray and ladder should not exceed 0.00033 Ω and should be tested using an equipotential bonding tester (continuity meter) or a micro Ω meter. The test should be conducted on both sides of the connection point, and the connection resistance at both ends of the entire length of the bridge should not exceed 0.5 Ω or be determined by the design. Otherwise, a grounding point should be added to meet the requirements. The grounding hole should eliminate the coating, and the flat pad on one side of the bolt in contact with the coating should use a special grounding washer with claws.

　　3. 伸(shen)縮縫或軟連接(jie)處需采用(yong)編織(zhi)銅線(xian)連(lian)接(jie)。沿(yan)橋(qiao)架(jia)全長另敷(fu)設(she)接(jie)地(di)幹線(xian)時(shi)，每(mei)段（包(bao)括非(fei)直(zhi)線(xian)段）托(tuo)盤(pan)、梯(ti)架(jia)應(ying)小(xiao)有(you)壹點與(yu)接地(di)幹(gan)線(xian)可靠連(lian)接；在(zai)接地部位的(de)連接處(chu)應(ying)裝置(zhi)彈簧墊(dian)圈(quan)，以(yi)免松(song)動(dong)。

　　3. Expansion joints or soft connections should be connected using braided copper wires. When laying a grounding main line along the entire length of the bridge, each section (including non-linear sections) of the tray and ladder should be reliably connected to the grounding main line at a small point; A spring washer should be installed at the connection point of the grounding part to prevent loosening.

　　電(dian)纜橋(qiao)架(jia)作為布(bu)線(xian)工(gong)程的壹個配(pei)套(tao)項(xiang)目,目前尚無專(zhuan)門的規(gui)範指導,個生產(chan)廠(chang)家(jia)的規(gui)格程式缺乏(fa)通(tong)用(yong)性,因此(ci),設(she)計選(xuan)型過(guo)程應根據(ju)弱電(dian)各(ge)個系統纜顯(xian)得(de)類(lei)型、數(shu)量,合理(li)選(xuan)定(ding)適(shi)用(yong)的橋(qiao)架(jia)。(1)確(que)定(ding)方(fang)向：　根(gen)據建築(zhu)平面(mian)布(bu)置(zhi)圖,結(jie)合空調(tiao)管線(xian)和(he)電(dian)氣(qi)管(guan)線(xian)等(deng)設(she)置(zhi)情(qing)況、方(fang)便(bian)維修(xiu),以(yi)及電(dian)纜路由的(de)疏密來(lai)確定(ding)電(dian)纜橋(qiao)架(jia)的(de)路由。在(zai)室內,盡可能沿(yan)建築(zhu)物(wu)的墻、柱、梁及樓板架(jia)設(she),如(ru)許利(li)用(yong)綜合(he)管(guan)廊(lang)架(jia)設(she)時(shi),則(ze)應(ying)在管(guan)道(dao)壹側(ce)或上方(fang)平行架(jia)設(she),並(bing)考慮(lv)引下(xia)線(xian)和(he)分(fen)支(zhi)線(xian)盡(jin)量避免(mian)交叉,如無其它管(guan)架(jia)借(jie)用(yong),則(ze)需(xu)自設立(支(zhi))柱。

　　As a supporting project of wiring engineering, there is currently no specialized specification guidance for cable trays, and the specifications and programs of individual manufacturers lack universality. Therefore, the design and selection process should be based on the type and quantity of cables in various weak current systems, and the appropriate cable tray should be selected reasonably. (1) Determine direction: Determine the optimal route for cable trays based on the building layout plan, combined with the installation of air conditioning and electrical pipelines, convenient maintenance, and the density of cable routing. Indoors, try to install along the walls, columns, beams, and floor slabs of the building as much as possible. When using a comprehensive pipe gallery for installation, parallel installation should be carried out on one side or above the pipeline, and consideration should be given to avoiding crossing of down conductors and branch lines as much as possible. If there are no other pipe racks to borrow, self installing (supporting) columns is required.

　　(2)荷(he)載計(ji)算：計(ji)算電(dian)纜橋(qiao)架(jia)主(zhu)幹(gan)線(xian)縱(zong)斷面(mian)上(shang)單位長度的電(dian)纜重(zhong)量。

　　(2) Load calculation: Calculate the weight of cables per unit length on the longitudinal section of the main cable tray.

　　(3)確定(ding)橋(qiao)架(jia)的(de)寬(kuan)度：根(gen)據(ju)布(bu)放電(dian)纜條(tiao)數(shu)、電(dian)纜直(zhi)徑(jing)及電(dian)纜的(de)間距來(lai)確定(ding)電(dian)纜橋(qiao)架(jia)的(de)型號(hao)、規(gui)格, 托(tuo)臂的(de)長度,支(zhi)柱的(de)長度、間距,橋(qiao)架(jia)的(de)寬(kuan)度和(he)層數(shu)。

　　(3) Determine the width of the cable tray: Determine the model and specifications of the cable tray, the length of the support arm, the length and spacing of the pillars, the width and number of layers of the cable tray based on the number of cables laid, the diameter of the cables, and the spacing between the cables.

　　(4)確(que)定安裝(zhuang)方(fang)式：根(gen)據場所(suo)的(de)設置(zhi)條件確(que)定橋(qiao)架(jia)的(de)固(gu)定方(fang)式,選(xuan)擇懸吊(diao)式(shi)、直(zhi)立式、側(ce)壁(bi)式(shi)或是混合(he)式,連接件和(he)緊(jin)固(gu)件壹般(ban)是(shi)配(pei)套(tao)供應的(de),此外,根(gen)據(ju)橋(qiao)架(jia)結(jie)構選(xuan)折相應的蓋板。

　　(4) Determine installation method: Determine the fixing method of the bridge according to the setting conditions of the site, choose suspended, upright, side wall or hybrid, and the connectors and fasteners are generally supplied together. In addition, select the corresponding cover plate according to the structure of the bridge.

　　(5)繪(hui)出(chu)電(dian)纜橋(qiao)架(jia)平、剖(pou)面(mian)圖,局部部位還(hai)應繪(hui)出(chu)空間圖,開列(lie)材料(liao)表(biao)。

　　(5) Draw a plan and section diagram of the cable tray, and also draw a spatial diagram of some parts, and list the material list.

　　2、如(ru)與電(dian)力電(dian)纜橋(qiao)架(jia)合(he)用(yong)時,應(ying)將電(dian)力電(dian)纜和(he)弱(ruo)電(dian)電(dian)纜各(ge)直(zhi)壹側(ce),中間采用(yong)隔板分(fen)隔。

　　2. When used in conjunction with power cable trays, the power cables and weak current cables should be placed on one side each, and separated by a partition in the middle.

　　3、弱電(dian)電(dian)纜與(yu)其它低(di)電(dian)壓電(dian)纜合(he)用(yong)橋(qiao)架(jia)時(shi),應(ying)嚴格執行選(xuan)擇具有(you)外(wai)屏(ping)蔽(bi)層的(de)弱(ruo)電(dian)系統的(de)弱(ruo)電(dian)電(dian)纜,避(bi)免(mian)相互(hu)間的幹擾(rao)。

　　3. When weak current cables are used in cable trays with other low voltage cables, it is necessary to strictly select weak current cables with external shielding layers to avoid interference between them.

　　4、電(dian)纜橋(qiao)架(jia)安裝(zhuang)要求(qiu)

　　4. Installation requirements for cable trays

　　(1)槽式大(da)跨(kua)距電(dian)纜橋(qiao)架(jia)由(you)室外進入(ru)建(jian)築(zhu)物(wu)內時,橋(qiao)架(jia)向(xiang)外(wai)的坡(po)度不得小(xiao)於(yu)1/100。(2)電(dian)纜橋(qiao)架(jia)與(yu)用(yong)電(dian)設(she)備(bei)交越(yue)時(shi),其間的凈距(ju)不小於(yu)0.5m。

　　(1) When the trough type large-span cable tray enters the building from the outside, the outward slope of the tray shall not be less than 1/100. (2) When the cable tray intersects with electrical equipment, the clear distance between them shall not be less than 0.5m.

　　(3)兩組電(dian)纜橋(qiao)架(jia)在(zai)同壹高(gao)度(du)平行敷(fu)設(she)時(shi),其間凈距(ju)不小於(yu)0.6m。(4)在平行圖上繪(hui)出(chu)橋(qiao)架(jia)的(de)路由,要(yao)註明(ming)橋(qiao)架(jia)起(qi)點(dian)、終(zhong)點、拐(guai)彎(wan)點(dian)、分(fen)支(zhi)點及升降點的(de)坐標(biao)或定位尺(chi)寸、標高(gao),如(ru)能繪(hui)制(zhi)橋(qiao)架(jia)敷(fu)設(she)軸(zhou)側(ce)圖,則(ze)對(dui)材(cai)料(liao)統計(ji)將更(geng)精確(que)。

　　(3) When two sets of cable trays are laid in parallel at the same height, the clear distance between them should not be less than 0.6m. (4) When drawing the routing of the tray on a parallel diagram, the coordinates or positioning dimensions and elevations of the starting point, ending point, turning point, branching point, and lifting point of the tray should be indicated. If a cable tray laying axis side diagram can be drawn, the material statistics will be more accurate.

　　直(zhi)線(xian)段：註(zhu)明全長、橋(qiao)架(jia)層數(shu)、標(biao)高(gao)、型號(hao)及規(gui)格。拐彎(wan)點(dian)和(he)分(fen)支(zhi)點:註(zhu)明所(suo)用(yong)轉彎(wan)接(jie)板的(de)型號(hao)及規(gui)格。升降(jiang)段：註(zhu)明標高(gao)變(bian)化(hua),也(ye)可用(yong)局部大(da)樣圖或剖(pou)面(mian)圖表(biao)示。

　　Straight line segment: indicate the total length, number of bridge layers, elevation, model, and specifications. Turning and branching points: indicate the model and specifications of the turning joint used. Lifting section: indicate the elevation change, and it can also be represented by local detailed drawings or sectional drawings.

　　(5)橋(qiao)架(jia)支(zhi)撐(cheng)點, 如(ru)立柱、托(tuo)臂或非標準支(zhi)、構架(jia)的(de)間距、安裝(zhuang)方(fang)式、型號(hao)規(gui)格、標高(gao),可同意在平面(mian)上(shang)列(lie)表(biao)說(shuo)明,也(ye)可分段標(biao)出(chu)用(yong)不同的剖(pou)面(mian)圖、單線(xian)圖或大(da)樣圖表(biao)示。

　　(5) The spacing, installation method, model specifications, and elevation of bridge support points, such as columns, brackets, or non-standard supports and structures, can be listed and explained on the plane, or segmented and marked with different sectional drawings, single line drawings, or detailed drawings.

　　(6)電(dian)纜引下(xia)點位置(zhi)及引下(xia)方(fang)式,壹般(ban)而(er)言,大(da)批電(dian)纜引下(xia)可用(yong)垂(chui)直(zhi)彎(wan)接(jie)板和(he)垂(chui)直(zhi)引上(shang)架(jia),少(shao)量電(dian)纜引下(xia)可用(yong)導板或引管(guan),註明(ming)引下(xia)方(fang)式即(ji)可。

　　(6) Generally speaking, for a large number of cable leads, vertical bending plates and vertical lead frames can be used, while for a small number of cable leads, guide plates or guide pipes can be used, indicating the lead method.

　　(7)電(dian)纜橋(qiao)架(jia)宜(yi)高(gao)出(chu)地(di)面(mian)2.2米(mi)以(yi)上(shang),橋(qiao)架(jia)頂部(bu)距(ju)頂棚或其它障(zhang)礙物(wu)不應小(xiao)於(yu)0.3米,橋(qiao)架(jia)寬(kuan)度(du)不宜小(xiao)於(yu)0.1米,橋(qiao)架(jia)內(nei)橫(heng)斷面(mian)的(de)填(tian)充(chong)率(lv)不應超(chao)過50%。

　　(7) The cable tray should be at least 2.2 meters above the ground, and the distance between the top of the tray and the ceiling or other obstacles should not be less than 0.3 meters. The width of the tray should not be less than 0.1 meters, and the filling rate of the cross-section inside the tray should not exceed 50%.

　　(8)電(dian)纜橋(qiao)架(jia)內(nei)纜線(xian)垂(chui)直(zhi)敷(fu)設(she)時(shi),在(zai)纜線(xian)的(de)上(shang)端和(he)每(mei)間隔1.5米處(chu)應(ying)固定在(zai)橋(qiao)架(jia)的(de)支(zhi)架(jia)上(shang),水(shui)平敷(fu)設(she)時(shi), 在(zai)纜線(xian)的(de)首(shou)、尾(wei)、轉彎(wan)及每(mei)間隔3~5米處(chu)進(jin)行固定。

　　(8) When the cables are vertically laid in the cable tray, they should be fixed on the brackets of the tray at the upper end and every 1.5 meters. When laid horizontally, they should be fixed at the beginning, end, turn, and every 3-5 meters.

　　(9)在吊(diao)頂內(nei)設(she)置(zhi)時,槽(cao)蓋開啟面(mian)應(ying)保(bao)持80毫(hao)米的垂(chui)直(zhi)凈空,線(xian)槽(cao)截面(mian)利(li)用(yong)率(lv)不應超(chao)過50%。

　　(9) When installed in the ceiling, the opening surface of the trough cover should maintain a vertical clearance of 80 millimeters, and the utilization rate of the trough section should not exceed 50%.

　　(10)布(bu)放在(zai)線(xian)槽(cao)的(de)纜線(xian)可以不綁(bang)紮,槽(cao)內纜線(xian)應(ying)順(shun)直(zhi),槽(cao)內(nei)纜線(xian)應(ying)順(shun)直(zhi),盡(jin)量不交叉,纜線(xian)不應溢(yi)出(chu)線(xian)槽(cao),在(zai)纜線(xian)進(jin)出(chu)線(xian)槽(cao)部(bu)位, 轉(zhuan)彎(wan)處(chu)應(ying)綁(bang)紮固(gu)定。垂(chui)直(zhi)線(xian)槽(cao)布(bu)放纜線(xian)應(ying)每(mei)間隔1.5米固(gu)定(ding)在纜線(xian)支(zhi)架(jia)上(shang)。

　　(10) The cables laid in the cable trough can be left unbound. The cables inside the trough should be straight and straight, avoiding crossing as much as possible. The cables should not overflow from the trough. They should be tied and fixed at the entrance and exit of the trough, as well as at turns. The cables laid in the vertical cable tray should be fixed on the cable support every 1.5 meters.

　　(11)在(zai)水平、垂(chui)直(zhi)橋(qiao)架(jia)和(he)垂(chui)直(zhi)線(xian)槽(cao)中敷(fu)設(she)線(xian)時(shi),應(ying)對(dui)纜線(xian)進(jin)行綁(bang)紮。4對(dui)線(xian)電(dian)纜以(yi)24根(gen)為束(shu),25對(dui)或以上主(zhu)幹線(xian)電(dian)纜、光纜及其它信號(hao)電(dian)纜應(ying)根(gen)據纜線(xian)的(de)類(lei)型、纜徑(jing)、纜線(xian)芯數分束(shu)綁(bang)紮。綁(bang)紮間距不宜大(da)於(yu)1.5米,扣間距應均勻(yun),松(song)緊(jin)適(shi)度。

　　(11) When laying wires in horizontal and vertical cable trays and vertical trunking, the cables should be tied. 4-pair cables should be bundled with 24 cables, and 25 or more pairs of backbone cables, optical cables, and other signal cables should be bundled and tied according to the type, diameter, and number of cable cores. The binding spacing should not exceed 1.5 meters, the buckle spacing should be uniform, and the tightness should be moderate.

　　(12)橋(qiao)架(jia)水(shui)平敷(fu)設(she)時(shi),支(zhi)撐(cheng)間距壹般(ban)為1.5-3m,垂(chui)直(zhi)敷(fu)設(she)時(shi)固(gu)定在建築(zhu)物(wu)構體上的間距宜小於(yu)2m。

　　(12) When laying the bridge horizontally, the support spacing is generally 1.5-3m, and when laying vertically, the spacing fixed on the building structure should be less than 2m.

　　電(dian)纜橋(qiao)架(jia)型式(shi)及品種(zhong)的選(xuan)擇及鋪設(she)規(gui)範

　　Selection and laying specifications for cable tray types and varieties

　　壹、電(dian)纜橋(qiao)架(jia)型式(shi)及品種(zhong)的選(xuan)擇

　　1、 Selection of cable tray types and varieties

　　1、需(xu)屏(ping)蔽電(dian)氣(qi)幹(gan)擾(rao)的(de)電(dian)纜網(wang)路或有(you)防護外部(bu)（如(ru)：有(you)腐(fu)蝕液(ye)休(xiu)，易(yi)燃粉(fen)塵等環(huan)境(jing)）影響的要(yao)求(qiu)時，應選(xuan)用(yong)（FB）類(lei)槽(cao)式復合型防腐(fu)屏蔽電(dian)纜橋(qiao)架(jia)（帶(dai)蓋）

　　1. When it is required to shield cable networks from electrical interference or to protect against external influences (such as corrosive liquids, flammable dust, etc.), (FB) type slot type composite anti-corrosion shielding cable trays (with covers) should be selected

　　2、強腐(fu)蝕性環(huan)境(jing)應采用(yong)（F）類(lei)復(fu)合環(huan)氧(yang)樹(shu)脂(zhi)防腐(fu)阻燃型電(dian)纜橋(qiao)架(jia)。托(tuo)臂、支(zhi)架(jia)也(ye)要(yao)選(xuan)用(yong)同樣材料，提高(gao)橋(qiao)架(jia)及附件的(de)使用(yong)壽(shou)命(ming)，電(dian)纜橋(qiao)架(jia)。在(zai)容(rong)易(yi)積(ji)灰和其它需(xu)遮蓋的環(huan)境(jing)或戶外場(chang)所(suo)宜(yi)加(jia)蓋板。

　　2. For highly corrosive environments, (F) type composite epoxy resin anti-corrosion and flame-retardant cable trays should be used. The same materials should be used for the support arm and bracket to improve the service life of the cable tray and accessories. Cover plates should be added in environments or outdoor places that are prone to dust accumulation and require cover.

　　3、除上(shang)述情(qing)況外(wai)，可根據(ju)現(xian)場還(hai)環(huan)境(jing)及技(ji)術要求(qiu)選(xuan)用(yong)托(tuo)盤(pan)式、槽式、梯(ti)級(ji)式(shi)、玻(bo)璃防腐(fu)阻燃電(dian)纜橋(qiao)架(jia)或鋼質普通型橋(qiao)架(jia)。在(zai)容(rong)易(yi)積(ji)灰和其它需(xu)遮蓋的環(huan)境(jing)或戶外場(chang)所(suo)宜(yi)加(jia)蓋板。

　　3. In addition to the above situations, tray type, trough type, step type, glass anti-corrosion and flame-retardant cable trays or steel ordinary cable trays can be selected according to the on-site environment and technical requirements. Cover plates should be added in environments or outdoor places that are prone to dust accumulation and require cover.

　　4、在(zai)公共(gong)通(tong)道(dao)或戶外跨(kua)越(yue)道(dao)路段，底(di)層梯(ti)級(ji)的(de)底(di)部宜(yi)加(jia)墊(dian)板或在該(gai)段使用(yong)托(tuo)盤(pan) 。大(da)跨(kua)距跨(kua)越(yue)公共(gong)通(tong)道(dao)時，可根據(ju)用(yong)戶要(yao)求(qiu)提高(gao)橋(qiao)架(jia)的(de)載(zai)荷(he)能力或選(xuan)用(yong)行架(jia)。

　　4. When crossing public passages or outdoor road sections, it is advisable to add padding or use pallets at the bottom of the lower steps. When crossing public passages with large spans, the load capacity of the bridge frame can be increased or a scaffolding can be selected according to user requirements.

　　5、大(da)跨(kua)距（>3m）要選(xuan)用(yong)復合(he)型橋(qiao)架(jia)（FB）。

　　5. Composite cable trays (FB) should be selected for large spans (>3m).

　　6、戶(hu)外(wai)要選(xuan)用(yong)復合(he)環(huan)氧(yang)樹(shu)指橋(qiao)架(jia)（F）。

　　6. Choose composite epoxy tree finger bridge (F) for outdoor use.

　　二(er)、電(dian)纜橋(qiao)架(jia)規(gui)格選(xuan)擇

　　2、 Selection of cable tray specifications

　　1、復(fu)合(he)環(huan)氧(yang)樹(shu)脂(zhi)電(dian)纜橋(qiao)架(jia)的(de)寬(kuan)度和(he)高(gao)度(du)就按(an)下(xia)表(biao)選(xuan)擇，並(bing)應(ying)符(fu)合(he)電(dian)纜真充(chong)率(lv)不超過(guo)有(you)關標(biao)準規(gui)範的規(gui)定(ding)值(zhi)，動(dong)力電(dian)纜可取40-50%，控(kong)制(zhi)電(dian)纜可取50-70%，另外需予留(liu)10-25%的(de)式(shi)程發展余量。

　　1. The width and height of the composite epoxy resin cable tray should be selected according to the table below, and should comply with the specified values of the cable true filling rate not exceeding the relevant standard specifications. The power cable can be taken as 40-50%, the control cable can be taken as 50-70%, and an additional 10-25% formula development margin should be reserved.

　　2、各種(zhong)彎(wan)通(tong)及附件規(gui)格應符(fu)合(he)工(gong)程布(bu)置(zhi)條件並(bing)與橋(qiao)架(jia)相配(pei)套(tao)。

　　2. The specifications of various bends and accessories should comply with the engineering layout conditions and be compatible with the bridge frame.

　　3、支(zhi)、吊架(jia)規(gui)格的選(xuan)擇，應(ying)按(an)橋(qiao)架(jia)規(gui)格、層數(shu)、跨(kua)距等條件配(pei)置(zhi)。並應(ying)滿(man)足(zu)荷(he)載的(de)要求(qiu)。

　　3. The selection of support and hanger specifications should be configured according to the specifications, number of layers, span, and other conditions of the bridge frame. And it should meet the requirements of the load.

　　4、橋(qiao)架(jia)橫(heng)截面(mian)積(ji)的(de)選(xuan)擇見表(biao)橋(qiao)架(jia)上(shang)電(dian)纜網(wang)絡(luo)中任壹線(xian)路的自動(dong)過電(dian)流(liu)保護的額定電(dian)流(liu)值或整(zheng)定值(zhi)（A） 橋(qiao)架(jia)橫(heng)截面(mian)充(chong)許小(xiao)值(zhi)(mm2)0-60 12961-100 258101-200 452201-400 645401-600 968

　　4. The selection of the cross-sectional area of the cable tray is shown in the table. The rated current value or setting value of the maximum automatic overcurrent protection for any line in the cable network on the cable tray (A). The minimum allowable cross-sectional area of the cable tray (mm2) is 0-60 12961-100 258101-200 452201-400 645401-600 968

　　三(san)、對(dui)於(yu)電(dian)纜橋(qiao)架(jia)的(de)支(zhi)、吊架(jia)的(de)配(pei)置(zhi)

　　3、 Configuration of supports and hangers for cable trays

　　1、戶內(nei)支(zhi)、吊短跨(kua)距壹般(ban)采(cai)取1.5-3m。戶(hu)外(wai)立柱中跨(kua)距壹般(ban)采(cai)取6m。

　　1. The short span of indoor supports and hangers is generally 1.5-3m. The mid span of outdoor columns is generally 6m.

　　2、非(fei)直(zhi)線(xian)段的(de)支(zhi)、吊架(jia)配(pei)置(zhi)就遵循(xun)以下原則(ze)。當橋(qiao)架(jia)寬(kuan)度(du)<300mm時，應(ying)在(zai)距(ju)非(fei)直(zhi)線(xian)段與(yu)直(zhi)線(xian)結(jie)合處(chu)300-600m的直(zhi)線(xian)段側(ce)設(she)置(zhi)壹個支(zhi)、吊架(jia)。當橋(qiao)架(jia)寬(kuan)度(du)>300mm時，除符(fu)合(he)下(xia)述條(tiao)件外(wai)，在非(fei)直(zhi)線(xian)段中部還(hai)應(ying)增設壹個支(zhi)、吊架(jia)。

　　2. The configuration of supports and hangers for non-linear sections follows the following principles. When the width of the bridge is less than 300mm, a support and hanger should be installed on the side of the straight section 300-600m away from the junction of the non-linear section and the straight section. When the width of the bridge is greater than 300mm, in addition to meeting the following conditions, a support or hanger should be added in the middle of the non-linear section.

　　3、拉擠(ji)玻(bo)璃鋼電(dian)纜橋(qiao)架(jia)多(duo)層設(she)置(zhi)時層間中心距(ju)為200，250，300，350mm。

　　3. When setting up multiple layers of extruded fiberglass cable trays, the center distance between layers is 200250300350mm.

　　4、橋(qiao)架(jia)直(zhi)線(xian)段每(mei)隔50m應予留(liu)伸(shen)縮(suo)縫20-30mm（金(jin)屬橋(qiao)架(jia)）。

　　4. Expansion joints of 20-30mm (metal bridge) should be left every 50m in the straight section of the bridge.

　　四(si)、防火(huo)：要求(qiu)橋(qiao)架(jia)防火(huo)的區(qu)段，必(bi)須(xu)采用(yong)鋼制(zhi)或不燃、阻(zu)燃材(cai)料(liao)。

　　4、 Fire prevention: Steel or non combustible and flame-retardant materials must be used in the sections where bridge frames are required to be fire-resistant.

　　五、拉擠(ji)玻(bo)璃鋼電(dian)纜橋(qiao)架(jia)的(de)接(jie)地

　　5、 Grounding of extruded fiberglass cable tray

　　1、橋(qiao)架(jia)系統應(ying)具有(you)可靠的(de)電(dian)氣(qi)連(lian)接(jie)並(bing)接地（只(zhi)對(dui)金(jin)屬橋(qiao)架(jia)）。

　　1. The cable tray system should have reliable electrical connections and grounding (only for metal cable trays).

　　2、當允(yun)許(xu)利用(yong)橋(qiao)架(jia)系統構(gou)成(cheng)接地(di)幹線(xian)回(hui)路時應(ying)符(fu)合(he)下(xia)列(lie)要求(qiu)。橋(qiao)架(jia)端部(bu)之間連接電(dian)阻(zu)應不大(da)於(yu)0.00033歐姆(mu)，接地(di)孔(kong)應(ying)絕(jue)緣(yuan)塗(tu)層。在(zai)1KV及以下中性點(dian)直(zhi)接(jie)接(jie)地(di)系統中，受(shou)電(dian)設(she)備(bei)的(de)接地(di)與(yu)系統中性線(xian)接(jie)地(di)相連。裝有(you)處(chu)動(dong)切斷供電(dian)裝(zhuang)軒(xuan)時(shi)，橋(qiao)架(jia)的(de)級(ji)長方(fang)向金(jin)屬橫(heng)截面(mian)積(ji)應(ying)不小於(yu)規(gui)定(ding)值(zhi)。

　　2. When it is allowed to use a bridge system to form a grounding main circuit, the following requirements should be met. The connection resistance between the ends of the bridge should not exceed 0.00033 ohms, and the insulation coating should be removed from the grounding hole. In a neutral point direct grounding system of 1KV and below, the grounding of the receiving equipment is connected to the neutral line grounding of the system. When installing a power cut-off device, the cross-sectional area of the metal in the longitudinal direction of the bridge should not be less than the specified value.

　　3、沿(yan)橋(qiao)架(jia)全長另敷(fu)設(she)接(jie)地(di)幹線(xian)時(shi)，每(mei)段（包(bao)括非(fei)直(zhi)線(xian)段）橋(qiao)架(jia)應(ying)少(shao)有(you)壹點與(yu)接地(di)幹(gan)線(xian)可靠連(lian)接。

　　3. When laying a grounding main line along the entire length of the bridge, each section (including non-linear sections) of the bridge should have at least one point reliably connected to the grounding main line.

　　4、對(dui)於(yu)振動(dong)場所(suo)，在(zai)接地(di)部(bu)位的(de)連接處(chu)應(ying)裝置(zhi)彈簧圈(quan)。

　　4. For vibration sites, spring coils should be installed at the connection of the grounding point.

　　六、橋(qiao)架(jia)系統設(she)計(ji)內容(rong)：橋(qiao)架(jia)系統工(gong)程設計應(ying)與土(tu)建、工(gong)藝以(yi)及有(you)關密切相配(pei)合以(yi)確定(ding)布(bu)置(zhi)，其設計(ji)內(nei)容(rong)可含有(you)：

　　6、 Bridge system design content: The bridge system engineering design should be closely coordinated with civil engineering, technology, and related disciplines to determine the optimal layout. Its design content may include:

　　1、橋(qiao)架(jia)系統的(de)有(you)關剖(pou)面(mian)圖。2、橋(qiao)架(jia)系統的(de)平面(mian)布(bu)置(zhi)圖。3、橋(qiao)架(jia)系統所(suo)需(xu)直(zhi)線(xian)段、彎(wan)通(tong)、支(zhi)、吊架(jia)規(gui)格和數(shu)量的明(ming)細(xi)表(biao)以(yi)及必(bi)要的(de)說(shuo)明。4、有(you)特殊要求(qiu)的非標(biao)件技(ji)術說(shuo)明或示意圖。

　　1. Relevant sectional drawings of the bridge system. 2. Layout plan of the bridge system. 3. A detailed list of specifications and quantities of straight sections, bends, supports, and hangers required for the bridge system, along with necessary explanations. 4. Technical specifications or diagrams for non-standard parts with special requirements.

　　七、安裝(zhuang)：電(dian)纜橋(qiao)架(jia)的(de)安半(ban)夜請(qing)參照(zhao)建築(zhu)標(biao)準設計(ji)研(yan)究院所(suo)發(fa)行的JSJT-121全國(guo)通(tong)用(yong)建築(zhu)標(biao)準設計(ji)-電(dian)氣(qi)裝(zhuang)置(zhi)標準圖集(ji)《電(dian)纜橋(qiao)架(jia)安裝(zhuang)》。

　　7、 Installation: For the installation of cable trays, please refer to the JSJT-121 National General Building Standard Design Electrical Equipment Standard Atlas "Cable Tray Installation" issued by the China Building Standards Design and Research Institute.

　　八、設計(ji)要(yao)求(qiu)

　　8、 Design requirements

　　1、橋(qiao)架(jia)系統的(de)路徑平面(mian)布(bu)置(zhi)圖；

　　1. Layout plan of the cable tray system path;

　　2、橋(qiao)架(jia)系統的(de)有(you)關斷面(mian)圖。

　　2. The relevant cross-sectional diagram of the bridge system.

　　3、橋(qiao)架(jia)系統所(suo)用(yong)防腐(fu)材質及所(suo)需(xu)直(zhi)通(tong)、彎(wan)通(tong)、支(zhi)（吊）架(jia)等(deng)的(de)規(gui)格和數(shu)量明細(xi)表(biao)以(yi)及必(bi)要的(de)說(shuo)明，連(lian)接(jie)板及螺(luo)絲(si)、防護帽按(an)以(yi)上(shang)要求(qiu)由生產(chan)廠(chang)家(jia)配(pei)齊。4、有(you)特殊要求(qiu)的非標(biao)準技(ji)術說(shuo)明或示圖。

　　3. The anti-corrosion materials used in the bridge system, as well as the specifications and quantities of the required straight through, bent through, support (suspension) frames, and necessary explanations, shall be detailed. The connecting plates, screws, and protective caps shall be provided by the manufacturer in accordance with the above requirements. 4. Non standard technical specifications or diagrams with special requirements.

　　壹、電(dian)纜橋(qiao)架(jia)型式(shi)及品種(zhong)的選(xuan)擇

　　1、 Selection of cable tray types and varieties

　　1、需(xu)屏(ping)蔽電(dian)氣(qi)幹(gan)擾(rao)的(de)電(dian)纜網(wang)路或有(you)防護外部(bu)（如(ru)：有(you)腐(fu)蝕液(ye)休(xiu)，易(yi)燃粉(fen)塵等環(huan)境(jing)）影響的要(yao)求(qiu)時，應選(xuan)用(yong)（FB）類(lei)槽(cao)式復合型防腐(fu)屏蔽電(dian)纜橋(qiao)架(jia)（帶(dai)蓋） 　　2、強腐(fu)蝕性環(huan)境(jing)應采用(yong)（F）類(lei)復(fu)合環(huan)氧(yang)樹(shu)脂(zhi)防腐(fu)阻燃型電(dian)纜橋(qiao)架(jia)。托(tuo)臂、支(zhi)架(jia)也(ye)要(yao)選(xuan)用(yong)同樣材料，提高(gao)橋(qiao)架(jia)及附件的(de)使用(yong)壽(shou)命(ming)，電(dian)纜橋(qiao)架(jia)。在(zai)容(rong)易(yi)積(ji)灰和其它需(xu)遮蓋的環(huan)境(jing)或戶外場(chang)所(suo)宜(yi)加(jia)蓋板。　　3、除上(shang)述情(qing)況外(wai)，可根據(ju)現(xian)場還(hai)環(huan)境(jing)及技(ji)術要求(qiu)選(xuan)用(yong)托(tuo)盤(pan)式、槽式、梯(ti)級(ji)式(shi)、玻(bo)璃防腐(fu)阻燃電(dian)纜橋(qiao)架(jia)或鋼質普通型橋(qiao)架(jia)。在(zai)容(rong)易(yi)積(ji)灰和其它需(xu)遮蓋的環(huan)境(jing)或戶外場(chang)所(suo)宜(yi)加(jia)蓋板。　　4、在(zai)公共(gong)通(tong)道(dao)或戶外跨(kua)越(yue)道(dao)路段，底(di)層梯(ti)級(ji)的(de)底(di)部宜(yi)加(jia)墊(dian)板或在該(gai)段使用(yong)托(tuo)盤(pan) 。大(da)跨(kua)距跨(kua)越(yue)公共(gong)通(tong)道(dao)時，可根據(ju)用(yong)戶要(yao)求(qiu)提高(gao)橋(qiao)架(jia)的(de)載(zai)荷(he)能力或選(xuan)用(yong)行架(jia)。　　5、大(da)跨(kua)距（>3m）要選(xuan)用(yong)復合(he)型橋(qiao)架(jia)（FB）。

　　1. When it is required to shield cable networks from electrical interference or to protect against external influences (such as corrosive liquids, flammable dust, etc.), (FB) type slot type composite anti-corrosion shielding cable trays (with covers) should be selected. 2. For highly corrosive environments, (F) type composite epoxy resin anti-corrosion and flame-retardant cable trays should be used. The same materials should be used for the support arm and bracket to improve the service life of the cable tray and accessories. Cover plates should be added in environments or outdoor places that are prone to dust accumulation and require cover. 3. In addition to the above situations, tray type, trough type, step type, glass anti-corrosion and flame-retardant cable trays or steel ordinary cable trays can be selected according to the on-site environment and technical requirements. Cover plates should be added in environments or outdoor places that are prone to dust accumulation and require cover. 4. When crossing public passages or outdoor road sections, it is advisable to add padding or use pallets at the bottom of the lower steps. When crossing public passages with large spans, the load capacity of the bridge frame can be increased or a scaffolding can be selected according to user requirements. 5. Composite cable trays (FB) should be selected for large spans (>3m).

　　6、戶(hu)外(wai)要選(xuan)用(yong)復合(he)環(huan)氧(yang)樹(shu)指橋(qiao)架(jia)（F）。

　　6. Choose composite epoxy tree finger bridge (F) for outdoor use.

　　二(er)、規(gui)格選(xuan)擇

　　2、 Specification selection

　　1、橋(qiao)架(jia)的(de)寬(kuan)度和(he)高(gao)度(du)就按(an)下(xia)表(biao)選(xuan)擇，並(bing)應(ying)符(fu)合(he)電(dian)纜真充(chong)率(lv)不超過(guo)有(you)關標(biao)準規(gui)範的規(gui)定(ding)值(zhi)，動(dong)力電(dian)纜可取40-50%，控(kong)制(zhi)電(dian)纜可取50-70%，另外需予留(liu)10-25%的(de)式(shi)程發展余量。　　2、各種(zhong)彎(wan)通(tong)及附件規(gui)格應符(fu)合(he)工(gong)程布(bu)置(zhi)條件並(bing)與橋(qiao)架(jia)相配(pei)套(tao)。　　3、支(zhi)、吊架(jia)規(gui)格的選(xuan)擇，應(ying)按(an)橋(qiao)架(jia)規(gui)格、層數(shu)、跨(kua)距等條件配(pei)置(zhi)。並應(ying)滿(man)足(zu)荷(he)載的(de)要求(qiu)。　　4、橋(qiao)架(jia)橫(heng)截面(mian)積(ji)的(de)選(xuan)擇見表(biao) 　　橋(qiao)架(jia)上(shang)電(dian)纜網(wang)絡(luo)中任壹線(xian)路的自動(dong)過電(dian)流(liu)保護的額定電(dian)流(liu)值或整(zheng)定值(zhi)（A） 橋(qiao)架(jia)橫(heng)截面(mian)充(chong)許小(xiao)值(zhi)(mm2) 　　0-60 129 　　61-100 258 　　101-200 452 　　201-400 645 　　401-600 968

　　1. The width and height of the cable tray should be selected according to the table below, and should comply with the specified values of the cable true filling rate not exceeding the relevant standard specifications. The power cable can be taken as 40-50%, the control cable can be taken as 50-70%, and an additional 10-25% of the formula development margin should be reserved. 2. The specifications of various bends and accessories should comply with the engineering layout conditions and be compatible with the bridge frame. 3. The selection of support and hanger specifications should be configured according to the specifications, number of layers, span, and other conditions of the bridge frame. And it should meet the requirements of the load. 4. The selection of the cross-sectional area of the cable tray is shown in the table. The rated current value or setting value of the maximum automatic overcurrent protection for any line in the cable network on the tray (A). The minimum allowable cross-sectional area of the tray (mm2) is 0-60 129 61-100 258 101-200 452 201-400 645 401-600 968

　　三(san)、支(zhi)、吊架(jia)的(de)配(pei)置(zhi)

　　3、 Configuration of supports and hangers

　　1、戶內(nei)支(zhi)、吊短跨(kua)距壹般(ban)采(cai)取1.5-3m。戶(hu)外(wai)立柱中跨(kua)距壹般(ban)采(cai)取6m。

　　1. The short span of indoor supports and hangers is generally 1.5-3m. The mid span of outdoor columns is generally 6m.

　　2、非(fei)直(zhi)線(xian)段的(de)支(zhi)、吊架(jia)配(pei)置(zhi)就遵循(xun)以下原則(ze)。當橋(qiao)架(jia)寬(kuan)度(du)<300mm時，應(ying)在(zai)距(ju)非(fei)直(zhi)線(xian)段與(yu)直(zhi)線(xian)結(jie)合處(chu)300-600m的直(zhi)線(xian)段側(ce)設(she)置(zhi)壹個支(zhi)、吊架(jia)。當橋(qiao)架(jia)寬(kuan)度(du)>300mm時，除符(fu)合(he)下(xia)述條(tiao)件外(wai)，在非(fei)直(zhi)線(xian)段中部還(hai)應(ying)增設壹個支(zhi)、吊架(jia)。

　　2. The configuration of supports and hangers for non-linear sections follows the following principles. When the width of the bridge is less than 300mm, a support and hanger should be installed on the side of the straight section 300-600m away from the junction of the non-linear section and the straight section. When the width of the bridge is greater than 300mm, in addition to meeting the following conditions, a support or hanger should be added in the middle of the non-linear section.

　　3、橋(qiao)架(jia)多(duo)層設(she)置(zhi)時層間中心距(ju)為200，250，300，350mm。

　　3. When setting up multiple layers of cable trays, the center distance between layers is 200250300350mm.

　　4、橋(qiao)架(jia)直(zhi)線(xian)段每(mei)隔50m應予留(liu)伸(shen)縮(suo)縫20-30mm（金(jin)屬橋(qiao)架(jia)）。

　　4. Expansion joints of 20-30mm (metal bridge) should be left every 50m in the straight section of the bridge.

　　四(si)、防火(huo)

　　4、 Fire prevention

　　要求(qiu)橋(qiao)架(jia)防火(huo)的區(qu)段，必(bi)須(xu)采用(yong)鋼制(zhi)或不燃、阻(zu)燃材(cai)料(liao)。我(wo)公司(si)生產(chan)的(de)BJⅢ系列(lie)電(dian)纜橋(qiao)架(jia)均為防火(huo)橋(qiao)架(jia)。

　　The section requiring bridge fire prevention must be made of steel or non combustible and flame-retardant materials. The BJ III series cable trays produced by our company are all fire-resistant trays.

　　五(wu)、接(jie)地

　　5、 Grounding

　　1、橋(qiao)架(jia)系統應(ying)具有(you)可靠的(de)電(dian)氣(qi)連(lian)接(jie)並(bing)接地（只(zhi)對(dui)金(jin)屬橋(qiao)架(jia)）。

　　1. The cable tray system should have reliable electrical connections and grounding (only for metal cable trays).

　　2、當允(yun)許(xu)利用(yong)橋(qiao)架(jia)系統構(gou)成(cheng)接地(di)幹線(xian)回(hui)路時應(ying)符(fu)合(he)下(xia)列(lie)要求(qiu)。橋(qiao)架(jia)端部(bu)之間連接電(dian)阻(zu)應不大(da)於(yu)0.00033歐姆(mu)，接地(di)孔(kong)應(ying)絕(jue)緣(yuan)塗(tu)層。在(zai)1KV及以下中性點(dian)直(zhi)接(jie)接(jie)地(di)系統中，受(shou)電(dian)設(she)備(bei)的(de)接地(di)與(yu)系統中性線(xian)接(jie)地(di)相連。裝有(you)處(chu)動(dong)切斷供電(dian)裝(zhuang)軒(xuan)時(shi)，橋(qiao)架(jia)的(de)級(ji)長方(fang)向金(jin)屬橫(heng)截面(mian)積(ji)應(ying)不小於(yu)規(gui)定(ding)值(zhi)。

　　2. When it is allowed to use a bridge system to form a grounding main circuit, the following requirements should be met. The connection resistance between the ends of the bridge should not exceed 0.00033 ohms, and the insulation coating should be removed from the grounding hole. In a neutral point direct grounding system of 1KV and below, the grounding of the receiving equipment is connected to the neutral line grounding of the system. When installing a power cut-off device, the cross-sectional area of the metal in the longitudinal direction of the bridge should not be less than the specified value.

　　3、沿(yan)橋(qiao)架(jia)全長另敷(fu)設(she)接(jie)地(di)幹線(xian)時(shi)，每(mei)段（包(bao)括非(fei)直(zhi)線(xian)段）橋(qiao)架(jia)應(ying)少(shao)有(you)壹點與(yu)接地(di)幹(gan)線(xian)可靠連(lian)接。

　　3. When laying a grounding main line along the entire length of the bridge, each section (including non-linear sections) of the bridge should have at least one point reliably connected to the grounding main line.

　　4、對(dui)於(yu)振動(dong)場所(suo)，在(zai)接地(di)部(bu)位的(de)連接處(chu)應(ying)裝置(zhi)彈簧圈(quan)。

　　4. For vibration sites, spring coils should be installed at the connection of the grounding point.

　　六、橋(qiao)架(jia)系統設(she)計(ji)內容(rong)

　　6、 Design content of bridge system

　　橋(qiao)架(jia)系統工(gong)程設計應(ying)與土(tu)建、工(gong)藝以(yi)及有(you)關密切相配(pei)合以(yi)確定(ding)布(bu)置(zhi)，其設計(ji)內(nei)容(rong)可含有(you)：

　　The design of bridge system engineering should be closely coordinated with civil engineering, technology, and relevant disciplines to determine the optimal layout, and its design content may include:

　　1、橋(qiao)架(jia)系統的(de)有(you)關剖(pou)面(mian)圖。

　　1. Relevant sectional drawings of the bridge system.

　　2、橋(qiao)架(jia)系統的(de)平面(mian)布(bu)置(zhi)圖。

　　2. Layout plan of the bridge system.

　　3、橋(qiao)架(jia)系統所(suo)需(xu)直(zhi)線(xian)段、彎(wan)通(tong)、支(zhi)、吊架(jia)規(gui)格和數(shu)量的明(ming)細(xi)表(biao)以(yi)及必(bi)要的(de)說(shuo)明。

　　3. A detailed list of specifications and quantities of straight sections, bends, supports, and hangers required for the bridge system, along with necessary explanations.

　　4、有(you)特殊要求(qiu)的非標(biao)件技(ji)術說(shuo)明或示意圖。

　　4. Technical specifications or diagrams for non-standard parts with special requirements.

　　七、安裝(zhuang)

　　7、 Installation

　　電(dian)纜橋(qiao)架(jia)的(de)安半(ban)夜請(qing)參照(zhao)建築(zhu)標(biao)準設計(ji)研(yan)究院所(suo)發(fa)行的JSJT-121全國(guo)通(tong)用(yong)建築(zhu)標(biao)準設計(ji)-電(dian)氣(qi)裝(zhuang)置(zhi)標準圖集(ji)《電(dian)纜橋(qiao)架(jia)安裝(zhuang)》04D701-3。

　　For the installation of cable trays, please refer to the JSJT-121 National General Building Standard Design Electrical Equipment Standard Atlas "Cable Tray Installation" 04D701-3 issued by the China Building Standards Design and Research Institute.

　　八、設計(ji)要(yao)求(qiu)

　　8、 Design requirements

　　1、橋(qiao)架(jia)系統的(de)路徑平面(mian)布(bu)置(zhi)圖；

　　1. Layout plan of the cable tray system path;

　　2、橋(qiao)架(jia)系統的(de)有(you)關斷面(mian)圖。

　　2. The relevant cross-sectional diagram of the bridge system.

　　3、橋(qiao)架(jia)系統所(suo)用(yong)防腐(fu)材質及所(suo)需(xu)直(zhi)通(tong)、彎(wan)通(tong)、支(zhi)（吊）架(jia)等(deng)的(de)規(gui)格和數(shu)量明細(xi)表(biao)以(yi)及必(bi)要的(de)說(shuo)明，連(lian)接(jie)板及螺(luo)絲(si)、防護帽按(an)以(yi)上(shang)要求(qiu)由生產(chan)廠(chang)家(jia)配(pei)齊。

　　3. The anti-corrosion materials used in the bridge system, as well as the specifications and quantities of the required straight through, bent through, support (suspension) frames, and necessary explanations, shall be detailed. The connecting plates, screws, and protective caps shall be provided by the manufacturer in accordance with the above requirements.

　　4、有(you)特殊要求(qiu)的非標(biao)準技(ji)術說(shuo)明或示圖。

　　4. Non standard technical specifications or diagrams with special requirements.

　　本文(wen)由 濟(ji)南(nan)電(dian)纜橋(qiao)架(jia)  友(you)情(qing)奉(feng)獻(xian).更(geng)多有(you)關的(de)知(zhi)識(shi)請(qing)點(dian)擊(ji)  http://wdyvw.cn//  真誠的態(tai)度.為您提供為的服務(wu).更(geng)多有(you)關的(de)知(zhi)識(shi)我(wo)們將會陸續(xu)向(xiang)大(da)家奉(feng)獻(xian).敬請(qing)期(qi)待(dai)

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