2．电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)材(cai)质选择电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)的(de)(de)材(cai)质是(shi)电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)工(gong)(gong)(gong)程(cheng)设(she)计(ji)(ji)(ji)常见的(de)(de)另外一个问(wen)题(ti)。按照材(cai)料划分，电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)主要有(you)(you)钢(gang)制(zhi)(zhi)、玻璃钢(gang)和铝(lv)合(he)金几种。玻璃钢(gang)电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)的(de)(de)特(te)(te)点是(shi)质量轻，比(bi)(bi)重为碳(tan)钢(gang)的(de)(de)1/4；耐水性和耐腐蚀性好，适合(he)化(hua)工(gong)(gong)(gong)厂(chang)。不易燃烧(shao)，难燃型玻璃钢(gang)电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)的(de)(de)氧(yang)指(zhi)数≥32。使用(yong)寿命(ming)(ming)长，一般设(she)计(ji)(ji)(ji)寿命(ming)(ming)为20年，但价(jia)格是(shi)钢(gang)制(zhi)(zhi)电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)的(de)(de)3倍。施(shi)工(gong)(gong)(gong)的(de)(de)优越性在于切割方便、组(zu)装(zhuang)灵(ling)活，安装(zhuang)无需(xu)动火，这对于危险环境并(bing)且工(gong)(gong)(gong)程(cheng)工(gong)(gong)(gong)期紧(jin)张(zhang)的(de)(de)化(hua)工(gong)(gong)(gong)厂(chang)工(gong)(gong)(gong)程(cheng)意义尤其重大，因为在危险环境，工(gong)(gong)(gong)程(cheng)动火安装(zhuang)时化(hua)工(gong)(gong)(gong)厂(chang)必须停产，经(jing)济效(xiao)益必受(shou)影响。铝(lv)合(he)金电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)重量也(ye)很轻，由于铝(lv)、钢(gang)比(bi)(bi)重不同（Al=，Fe=），按重量计(ji)(ji)(ji)算，铝(lv)钢(gang)之比(bi)(bi)约为1：3。铝(lv)合(he)金电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)外形尺(chi)寸、荷载(zai)特(te)(te)性均(jun)与钢(gang)质桥(qiao)(qiao)架(jia)(jia)基本(ben)相(xiang)近。就费用(yong)而言，铝(lv)合(he)金桥(qiao)(qiao)架(jia)(jia)的(de)(de)造(zao)价(jia)比(bi)(bi)镀锌(xin)钢(gang)制(zhi)(zhi)电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)要高(gao)20%，使用(yong)寿命(ming)(ming)是(shi)钢(gang)制(zhi)(zhi)电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)的(de)(de)5倍以上(shang)。3．电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)表面防(fang)腐层类别(bie)选择工(gong)(gong)(gong)程(cheng)设(she)计(ji)(ji)(ji)中常见的(de)(de)第三(san)个问(wen)题(ti)是(shi)电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)型号没有(you)(you)标注防(fang)腐层的(de)(de)类别(bie)，也(ye)没有(you)(you)统一的(de)(de)文字(zi)说明。此(ci)问(wen)题(ti)在现实中有(you)(you)教训，如我国(guo)承(cheng)担(dan)总承(cheng)包的(de)(de)印尼(ni)某工(gong)(gong)(gong)程(cheng)，钢(gang)制(zhi)(zhi)电(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)的(de)(de)表面防(fang)腐处理没有(you)(you)进(jin)行盐雾试验，完工(gong)(gong)(gong)不久桥(qiao)(qiao)架(jia)(jia)就锈蚀得相(xiang)当严重，不得不更(geng)换。梯式线槽就找三(san)民桥(qiao)(qiao)架(jia)(jia)。热浸锌(xin)桥(qiao)(qiao)架(jia)(jia)公司

或(huo)采取(qu)防腐蚀处理(li)，防腐蚀处理(li)方式应满(man)足(zu)工(gong)(gong)程环境和(he)耐(nai)(nai)久性的(de)(de)(de)要求。对(dui)耐(nai)(nai)腐蚀性能(neng)要求较高或(huo)要求洁(jie)净的(de)(de)(de)场(chang)所(suo)(suo)，宜(yi)选用铝合(he)金(jin)电(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)。1．4桥(qiao)(qiao)(qiao)架(jia)(jia)在(zai)(zai)(zai)(zai)有(you)防火要求的(de)(de)(de)区(qu)段内(nei)，可(ke)在(zai)(zai)(zai)(zai)电(dian)(dian)缆(lan)(lan)梯架(jia)(jia)，托(tuo)(tuo)盘内(nei)添加具(ju)有(you)耐(nai)(nai)火或(huo)难燃(ran)性能(neng)的(de)(de)(de)板(ban)，网等材料构成封闭(bi)或(huo)半封闭(bi)式结构，并采取(qu)在(zai)(zai)(zai)(zai)桥(qiao)(qiao)(qiao)架(jia)(jia)及其(qi)(qi)支吊架(jia)(jia)表面涂(tu)刷防火涂(tu)层(ceng)等措施(shi)。其(qi)(qi)整体耐(nai)(nai)火性能(neng)应满(man)足(zu)国家(jia)有(you)关(guan)规范或(huo)标准(zhun)的(de)(de)(de)要求。在(zai)(zai)(zai)(zai)工(gong)(gong)程防火要求较高的(de)(de)(de)场(chang)所(suo)(suo)．不(bu)宜(yi)采用铝合(he)金(jin)电(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)。1．5需(xu)要屏蔽电(dian)(dian)磁(ci)干扰(rao)的(de)(de)(de)电(dian)(dian)缆(lan)(lan)线路．或(huo)有(you)防护(hu)外部(bu)影响如户(hu)外日(ri)照(zhao)，油，腐蚀性液体、易燃(ran)粉尘(chen)等环境要求时．应选用无孔(kong)托(tuo)(tuo)盘式电(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)。1．6在(zai)(zai)(zai)(zai)容(rong)易积聚粉尘(chen)的(de)(de)(de)场(chang)所(suo)(suo)，电(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)应选用盖板(ban)；在(zai)(zai)(zai)(zai)公共(gong)通(tong)道(dao)或(huo)室外跨越道(dao)路段．底层(ceng)桥(qiao)(qiao)(qiao)架(jia)(jia)上宜(yi)加垫板(ban)或(huo)使用无孔(kong)托(tuo)(tuo)盘。1．7不(bu)同(tong)电(dian)(dian)压、不(bu)同(tong)用途的(de)(de)(de)电(dian)(dian)缆(lan)(lan)不(bu)宜(yi)敷设(she)在(zai)(zai)(zai)(zai)同(tong)一(yi)层(ceng)电(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)内(nei)：(1)1kV以(yi)上和(he)1kV及以(yi)下的(de)(de)(de)电(dian)(dian)缆(lan)(lan)：(2)同(tong)一(yi)路径向一(yi)级(ji)负荷供(gong)电(dian)(dian)的(de)(de)(de)双回路电(dian)(dian)缆(lan)(lan)；(3)应急(ji)照(zhao)明和(he)其(qi)(qi)他照(zhao)明的(de)(de)(de)电(dian)(dian)缆(lan)(lan)：(4)电(dian)(dian)力。惠州市三(san)(san)民实业(ye)有(you)限公司，是一(yi)家(jia)集电(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)、科研、生(sheng)产、销(xiao)售、服务(wu)为(wei)一(yi)体的(de)(de)(de)企业(ye)，公司兼(jian)营电(dian)(dian)线、电(dian)(dian)缆(lan)(lan)等建材相关(guan)产品。公司实力雄厚，全(quan)国多个大型(xing)重点(dian)工(gong)(gong)程项目指定供(gong)应商，并与多家(jia)房地产公司和(he)电(dian)(dian)力安装单位建立长期(qi)紧(jin)密(mi)合(he)作关(guan)系。江门金(jin)属桥(qiao)(qiao)(qiao)架(jia)(jia)多少钱镀锌桥(qiao)(qiao)(qiao)架(jia)(jia)就找三(san)(san)民桥(qiao)(qiao)(qiao)架(jia)(jia)。

S=截面积cm2。(2)梯(ti)架(jia)(jia)(jia)(jia)于(yu)托盘(pan)的(de)(de)(de)(de)(de)单位(wei)(wei)电(dian)(dian)阻(zu)(zu)值见表2。表2梯(ti)架(jia)(jia)(jia)(jia)于(yu)托盘(pan)的(de)(de)(de)(de)(de)单位(wei)(wei)电(dian)(dian)阻(zu)(zu)值(3)电(dian)(dian)缆(lan)槽(cao)的(de)(de)(de)(de)(de)单位(wei)(wei)电(dian)(dian)阻(zu)(zu)值见表3(4)当(dang)电(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)安装(zhuang)连接(jie)程(cheng)整体(ti)后，每(mei)根(gen)梯(ti)边(bian)(bian)(或每(mei)个电(dian)(dian)缆(lan)槽(cao))的(de)(de)(de)(de)(de)电(dian)(dian)阻(zu)(zu)为：R=L(r+1/3r’)式(shi)中：R--梯(ti)边(bian)(bian)，即(ji)（电(dian)(dian)缆(lan)槽(cao)）全(quan)长总电(dian)(dian)阻(zu)(zu)（mΩ）；r--梯(ti)边(bian)(bian)单位(wei)(wei)长度电(dian)(dian)阻(zu)(zu)（mΩ/m）桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)荷(he)(he)载(zai)(zai)(zai)(zai)特性(xing)编辑1、电(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)(de)(de)(de)荷(he)(he)载(zai)(zai)(zai)(zai)电(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)(de)(de)(de)荷(he)(he)载(zai)(zai)(zai)(zai)分为静(jing)荷(he)(he)载(zai)(zai)(zai)(zai)、动荷(he)(he)载(zai)(zai)(zai)(zai)和附加荷(he)(he)载(zai)(zai)(zai)(zai)。静(jing)荷(he)(he)载(zai)(zai)(zai)(zai)是(shi)(shi)指(zhi)敷(fu)设在电(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)内的(de)(de)(de)(de)(de)电(dian)(dian)缆(lan)种类、根(gen)数(shu)(shu)、每(mei)根(gen)的(de)(de)(de)(de)(de)外径重(zhong)(zhong)量/单位(wei)(wei)长度，按电(dian)(dian)缆(lan)敷(fu)设的(de)(de)(de)(de)(de)不(bu)同路由分别列表统计(ji)。动荷(he)(he)载(zai)(zai)(zai)(zai)是(shi)(shi)指(zhi)电(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)安装(zhuang)和维(wei)护过程(cheng)中施工维(wei)修人(ren)员的(de)(de)(de)(de)(de)重(zhong)(zhong)量。对(dui)于(yu)轻型(xing)电(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)，一(yi)般不(bu)考虑动荷(he)(he)载(zai)(zai)(zai)(zai)，即(ji)不(bu)允许在桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)上(shang)站(zhan)(行)人(ren)，如果需要考虑站(zhan)人(ren)，则应(ying)将跨距(ju)(ju)适(shi)当(dang)缩小(xiao)。附加荷(he)(he)载(zai)(zai)(zai)(zai)在室外是(shi)(shi)指(zhi)冰雪、风和电(dian)(dian)磁力所形(xing)成的(de)(de)(de)(de)(de)荷(he)(he)载(zai)(zai)(zai)(zai)，它与(yu)安装(zhuang)场所的(de)(de)(de)(de)(de)地区自然气象条件和带电(dian)(dian)体(ti)的(de)(de)(de)(de)(de)性(xing)质有(you)关，设计(ji)中应(ying)根(gen)据各种条件加以(yi)计(ji)算。选(xuan)用桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)(de)(de)(de)步(bu)骤(1)确定桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)宽(kuan)度、层(ceng)数(shu)(shu)、支(zhi)撑(cheng)点(dian)的(de)(de)(de)(de)(de)型(xing)式(shi)和间距(ju)(ju)、以(yi)及(ji)电(dian)(dian)缆(lan)在各层(ceng)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)上(shang)的(de)(de)(de)(de)(de)分布。桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)设计(ji)(2)计(ji)算每(mei)层(ceng)电(dian)(dian)缆(lan)的(de)(de)(de)(de)(de)均布荷(he)(he)载(zai)(zai)(zai)(zai)(kN/m2),初步(bu)确定桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)(de)(de)(de)型(xing)号、规(gui)格(ge)。。惠州市三民实业有(you)限公(gong)司，是(shi)(shi)一(yi)家集电(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)、科(ke)研、生(sheng)产(chan)、销(xiao)售、服务为一(yi)体(ti)的(de)(de)(de)(de)(de)企业，公(gong)司兼营电(dian)(dian)线、电(dian)(dian)缆(lan)等建材相关产(chan)品。公(gong)司实力雄厚。

由(you)底板(ban)与侧边(bian)构(gou)成(cheng)的(de)(de)(de)(de)或由(you)整(zheng)块(kuai)铝(lv)合(he)(he)金(jin)(jin)板(ban)弯(wan)曲制成(cheng)实底的(de)(de)(de)(de)槽形(xing)部(bu)件。LQJ系(xi)(xi)列(lie)铝(lv)合(he)(he)金(jin)(jin)电缆(lan)桥(qiao)架(jia)(jia)(jia)(jia)是一(yi)(yi)种(zhong)抗腐(fu)蚀桥(qiao)架(jia)(jia)(jia)(jia)。它具(ju)有(you)(you)结(jie)构(gou)简单、式样(yang)新颖(ying)、耐(nai)腐(fu)蚀，安装维护方便，不(bu)(bu)(bu)需(xu)保养等特(te)点(dian)，能(neng)够适(shi)用(yong)于的(de)(de)(de)(de)环境(jing)条件。LQJ系(xi)(xi)列(lie)铝(lv)合(he)(he)金(jin)(jin)防腐(fu)桥(qiao)架(jia)(jia)(jia)(jia)按结(jie)构(gou)形(xing)式可(ke)分(fen)为(wei)(wei)LQJ-A、B、C型和(he)LQJ-LPC型，前者(zhe)分(fen)别采用(yong)不(bu)(bu)(bu)同(tong)截面(mian)形(xing)状的(de)(de)(de)(de)铝(lv)合(he)(he)金(jin)(jin)挤压型材加(jia)工桥(qiao)架(jia)(jia)(jia)(jia)邦板(ban)和(he)梯档(dang)，可(ke)制成(cheng)梯级式、托盘式、槽式结(jie)构(gou)以(yi)(yi)满足不(bu)(bu)(bu)同(tong)场(chang)合(he)(he)的(de)(de)(de)(de)需(xu)要，后者(zhe)采用(yong)铝(lv)板(ban)折边(bian)成(cheng)型，制成(cheng)槽式汇线(xian)槽及各(ge)类特(te)殊弯(wan)通，以(yi)(yi)满足电缆(lan)布(bu)线(xian)的(de)(de)(de)(de)需(xu)要。LQJ-A、B、C型铝(lv)合(he)(he)金(jin)(jin)挤压型材加(jia)工成(cheng)型后固溶和(he)人(ren)工时效处理，不(bu)(bu)(bu)提高(gao)了耐(nai)蚀性，而且(qie)提高(gao)了铝(lv)合(he)(he)金(jin)(jin)的(de)(de)(de)(de)强度，从而保证铝(lv)合(he)(he)金(jin)(jin)桥(qiao)架(jia)(jia)(jia)(jia)具(ju)有(you)(you)较高(gao)的(de)(de)(de)(de)承载能(neng)力。LQJ系(xi)(xi)列(lie)铝(lv)合(he)(he)金(jin)(jin)防腐(fu)桥(qiao)架(jia)(jia)(jia)(jia)表面(mian)经阳极氧化处理，使其更具(ju)有(you)(you)优异的(de)(de)(de)(de)耐(nai)蚀性、具(ju)有(you)(you)耐(nai)腐(fu)蚀时间(jian)长、不(bu)(bu)(bu)需(xu)要保养的(de)(de)(de)(de)优点(dian)，特(te)别适(shi)用(yong)于高(gao)温、高(gao)湿、富盐雾的(de)(de)(de)(de)环境(jing)中选用(yong)。惠州市(shi)三民实业(ye)(ye)有(you)(you)限公司，是一(yi)(yi)家集电缆(lan)桥(qiao)架(jia)(jia)(jia)(jia)、科研(yan)、生(sheng)产、销(xiao)(xiao)售、服务为(wei)(wei)一(yi)(yi)体的(de)(de)(de)(de)企业(ye)(ye)。电缆(lan)桥(qiao)架(jia)(jia)(jia)(jia)好货(huo)源，厂家直销(xiao)(xiao)，三民桥(qiao)架(jia)(jia)(jia)(jia)。

喷粉电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)(jia)不(bu)宜作接地(di)(di)干(gan)线)，每(mei)(mei)个电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)值(zhi)可(ke)按下(xia)式(shi)计(ji)算(suan)：r=ρ·L/S式(shi)中(zhong)：ρ=15×10Ω-6/cm(20℃)；L=长(zhang)度(du)按100mm计(ji)算(suan)；S=截面积(ji)cm2。(2)梯(ti)(ti)(ti)架(jia)(jia)(jia)(jia)于托盘(pan)的(de)(de)单位(wei)电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)值(zhi)见表(biao)(biao)2。表(biao)(biao)2梯(ti)(ti)(ti)架(jia)(jia)(jia)(jia)于托盘(pan)的(de)(de)单位(wei)电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)值(zhi)(3)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)槽的(de)(de)单位(wei)电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)值(zhi)见表(biao)(biao)3(4)当电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)(jia)安装连接程整体(ti)后，每(mei)(mei)根梯(ti)(ti)(ti)边(bian)(或每(mei)(mei)个电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)槽)的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)为(wei)：R=L(r+1/3r’)式(shi)中(zhong)：R--梯(ti)(ti)(ti)边(bian)，即（电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)槽）全长(zhang)总电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)（mΩ）；r--梯(ti)(ti)(ti)边(bian)单位(wei)长(zhang)度(du)电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)（mΩ/m）桥(qiao)(qiao)架(jia)(jia)(jia)(jia)荷(he)(he)载(zai)(zai)(zai)(zai)特性编(bian)辑1、电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)荷(he)(he)载(zai)(zai)(zai)(zai)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)荷(he)(he)载(zai)(zai)(zai)(zai)分(fen)为(wei)静(jing)荷(he)(he)载(zai)(zai)(zai)(zai)、动荷(he)(he)载(zai)(zai)(zai)(zai)和附加(jia)(jia)荷(he)(he)载(zai)(zai)(zai)(zai)。静(jing)荷(he)(he)载(zai)(zai)(zai)(zai)是(shi)指敷(fu)(fu)设(she)(she)在电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)(jia)内的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)种(zhong)类、根数(shu)(shu)、每(mei)(mei)根的(de)(de)外径(jing)重量(liang)/单位(wei)长(zhang)度(du)，按电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)敷(fu)(fu)设(she)(she)的(de)(de)不(bu)同路(lu)由分(fen)别列表(biao)(biao)统计(ji)。动荷(he)(he)载(zai)(zai)(zai)(zai)是(shi)指电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)(jia)安装和维(wei)护过程中(zhong)施(shi)工维(wei)修人员的(de)(de)重量(liang)。对于轻型电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)(jia)，一般不(bu)考虑动荷(he)(he)载(zai)(zai)(zai)(zai)，即不(bu)允许在桥(qiao)(qiao)架(jia)(jia)(jia)(jia)上站(zhan)(行)人，如果需要考虑站(zhan)人，则应将(jiang)跨距(ju)(ju)适当缩(suo)小。附加(jia)(jia)荷(he)(he)载(zai)(zai)(zai)(zai)在室外是(shi)指冰雪(xue)、风和电(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)力所形成的(de)(de)荷(he)(he)载(zai)(zai)(zai)(zai)，它与安装场所的(de)(de)地(di)(di)区自然气(qi)象条件和带(dai)电(dian)(dian)(dian)(dian)(dian)(dian)体(ti)的(de)(de)性质有关，设(she)(she)计(ji)中(zhong)应根据(ju)各种(zhong)条件加(jia)(jia)以计(ji)算(suan)。2、选用桥(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)步骤(1)确定桥(qiao)(qiao)架(jia)(jia)(jia)(jia)宽度(du)、层数(shu)(shu)、支撑点的(de)(de)型式(shi)和间(jian)距(ju)(ju)、以及(ji)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)在各层桥(qiao)(qiao)架(jia)(jia)(jia)(jia)上的(de)(de)分(fen)布(bu)(bu)。桥(qiao)(qiao)架(jia)(jia)(jia)(jia)设(she)(she)计(ji)(2)计(ji)算(suan)每(mei)(mei)层电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)的(de)(de)均布(bu)(bu)荷(he)(he)载(zai)(zai)(zai)(zai)(kN/m2),初步确定桥(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)型号、规(gui)格。。电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)(jia)好品(pin)牌(pai)就选三民桥(qiao)(qiao)架(jia)(jia)(jia)(jia)！广(guang)东梯(ti)(ti)(ti)式(shi)桥(qiao)(qiao)架(jia)(jia)(jia)(jia)厚度(du)

防(fang)火线槽(cao)就(jiu)找(zhao)三民桥(qiao)架(jia)。热浸(jin)锌桥(qiao)架(jia)公司

则应(ying)在(zai)管(guan)道一侧或(huo)上(shang)方(fang)平行架(jia)(jia)(jia)设。并考虑引下线和分(fen)支线尽量避免(mian)交叉,如(ru)无其(qi)(qi)它管(guan)架(jia)(jia)(jia)借用(yong),则需自(zi)设立(li)(支)柱(zhu)。(2)荷(he)载计算：计算电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)主(zhu)干(gan)线纵断(duan)面上(shang)单(dan)位(wei)长(zhang)度(du)的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)重量。(3)确(que)定(ding)(ding)(ding)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)的(de)(de)宽(kuan)度(du)：根据(ju)布放电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)条(tiao)数(shu)、电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)直(zhi)(zhi)(zhi)径(jing)及电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)的(de)(de)间(jian)(jian)(jian)距(ju)(ju)来确(que)定(ding)(ding)(ding)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)的(de)(de)型(xing)号、规格(ge)(ge),托臂的(de)(de)长(zhang)度(du),支柱(zhu)的(de)(de)长(zhang)度(du)、间(jian)(jian)(jian)距(ju)(ju),桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)的(de)(de)宽(kuan)度(du)和层(ceng)数(shu)。(4)确(que)定(ding)(ding)(ding)安装方(fang)式(shi)：根据(ju)场所的(de)(de)设置(zhi)条(tiao)件(jian)确(que)定(ding)(ding)(ding)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)的(de)(de)固(gu)定(ding)(ding)(ding)方(fang)式(shi),选择(ze)悬吊式(shi)、直(zhi)(zhi)(zhi)立(li)式(shi)、侧壁式(shi)或(huo)是混合式(shi),连接件(jian)和紧固(gu)件(jian)一般是配(pei)套供应(ying)的(de)(de),此外(wai)(wai),根据(ju)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)结构选择(ze)相(xiang)(xiang)应(ying)的(de)(de)盖(gai)板。(5)绘(hui)(hui)出(chu)(chu)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)平、剖面图(tu),局部部位(wei)还应(ying)绘(hui)(hui)出(chu)(chu)空间(jian)(jian)(jian)图(tu),开列材(cai)料表(biao)。2、如(ru)与(yu)(yu)电(dian)(dian)(dian)(dian)(dian)(dian)力电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)合用(yong)时(shi),应(ying)将(jiang)电(dian)(dian)(dian)(dian)(dian)(dian)力电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)和弱(ruo)电(dian)(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)各直(zhi)(zhi)(zhi)一侧,中间(jian)(jian)(jian)采用(yong)隔板分(fen)隔。3、弱(ruo)电(dian)(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)与(yu)(yu)其(qi)(qi)它低电(dian)(dian)(dian)(dian)(dian)(dian)压电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)合用(yong)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)时(shi),应(ying)严格(ge)(ge)执行选择(ze)具(ju)有外(wai)(wai)屏蔽层(ceng)的(de)(de)弱(ruo)电(dian)(dian)(dian)(dian)(dian)(dian)系统的(de)(de)弱(ruo)电(dian)(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan),避免(mian)相(xiang)(xiang)互间(jian)(jian)(jian)的(de)(de)干(gan)扰。4、其(qi)(qi)它安装(1)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)由室外(wai)(wai)进(jin)入建筑物内时(shi),桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)向外(wai)(wai)的(de)(de)坡度(du)不得小于1/100。(2)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)与(yu)(yu)用(yong)电(dian)(dian)(dian)(dian)(dian)(dian)设备(bei)交越(yue)时(shi),其(qi)(qi)间(jian)(jian)(jian)的(de)(de)净(jing)距(ju)(ju)不小于。(3)两组电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)在(zai)同一高度(du)平行敷设时(shi),其(qi)(qi)间(jian)(jian)(jian)净(jing)距(ju)(ju)不小于。(4)在(zai)平行图(tu)上(shang)绘(hui)(hui)出(chu)(chu)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)的(de)(de)路由,要注明桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)起点(dian)、终点(dian)、拐弯点(dian)、分(fen)支点(dian)及升(sheng)降点(dian)的(de)(de)坐(zuo)标或(huo)定(ding)(ding)(ding)位(wei)尺寸、标高,如(ru)能绘(hui)(hui)制桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)敷设轴侧图(tu),则对材(cai)料统计将(jiang)更精确(que)。热浸锌桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)公(gong)司(si)

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