桥(qiao)(qiao)架(jia)(jia)(jia)的(de)(de)布置应根据(ju)经济合(he)理性(xing)、技术可(ke)行性(xing)、运行安全(quan)性(xing)等因素综合(he)比(bi)较(jiao)，以(yi)(yi)确定(ding)佳方案(an)，还要(yao)(yao)充分满(man)足施(shi)工(gong)安装、维(wei)护(hu)检修及(ji)电(dian)(dian)(dian)缆(lan)敷(fu)(fu)设的(de)(de)要(yao)(yao)求(qiu)。惠州市(shi)三民(min)实业有(you)限(xian)公(gong)(gong)司，是一家(jia)集电(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)架(jia)(jia)(jia)、科研、生产(chan)、销售、服务(wu)为(wei)(wei)(wei)一体的(de)(de)企(qi)业，公(gong)(gong)司兼营(ying)电(dian)(dian)(dian)线、电(dian)(dian)(dian)缆(lan)等建材相关产(chan)品(pin)(pin)。公(gong)(gong)司实力雄厚(hou)，全(quan)国(guo)多个大(da)型重点工(gong)程项目指(zhi)定(ding)供应商，并与(yu)多家(jia)房地产(chan)公(gong)(gong)司和(he)(he)电(dian)(dian)(dian)力安装单(dan)位(wei)建立长(zhang)期紧密合(he)作关系(xi)(xi)。桥(qiao)(qiao)架(jia)(jia)(jia)产(chan)品(pin)(pin)有(you)托盘(pan)式(shi)、槽式(shi)、梯级式(shi)钢制及(ji)铝(lv)合(he)金(jin)桥(qiao)(qiao)架(jia)(jia)(jia)系(xi)(xi)列，组合(he)式(shi)及(ji)玻(bo)璃(li)钢、防火桥(qiao)(qiao)架(jia)(jia)(jia)系(xi)(xi)列。公(gong)(gong)司自成立以(yi)(yi)来，顺(shun)应经济发(fa)展的(de)(de)潮流(liu)，以(yi)(yi)满(man)足省、市(shi)重点建设工(gong)程服务(wu)需(xu)要(yao)(yao)为(wei)(wei)(wei)目标，坚持诚信立业，以(yi)(yi)市(shi)场为(wei)(wei)(wei)导(dao)向，竭(jie)诚为(wei)(wei)(wei)客户(hu)提供好的(de)(de)产(chan)品(pin)(pin)和(he)(he)满(man)意的(de)(de)服务(wu)。2桥(qiao)(qiao)架(jia)(jia)(jia)水平敷(fu)(fu)设时(shi)距(ju)地面的(de)(de)高(gao)度一般不低于于，垂直敷(fu)(fu)设时(shi)距(ju)地面，但敷(fu)(fu)设在(zai)(zai)电(dian)(dian)(dian)气房间内(nei)时(shi)除外。电(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)架(jia)(jia)(jia)水平敷(fu)(fu)设在(zai)(zai)设备夹层或(huo)马道且低于2．5m，应采(cai)取保护(hu)接(jie)地措施(shi)。1．3桥(qiao)(qiao)架(jia)(jia)(jia)、线槽及(ji)其支吊架(jia)(jia)(jia)使用(yong)在(zai)(zai)有(you)腐(fu)(fu)蚀(shi)(shi)(shi)性(xing)环境(jing)(jing)中，应采(cai)用(yong)耐(nai)(nai)(nai)腐(fu)(fu)蚀(shi)(shi)(shi)的(de)(de)刚(gang)性(xing)材料制造(zao)。或(huo)采(cai)取防腐(fu)(fu)蚀(shi)(shi)(shi)处理，防腐(fu)(fu)蚀(shi)(shi)(shi)处理方式(shi)应满(man)足工(gong)程环境(jing)(jing)和(he)(he)耐(nai)(nai)(nai)久性(xing)的(de)(de)要(yao)(yao)求(qiu)。对耐(nai)(nai)(nai)腐(fu)(fu)蚀(shi)(shi)(shi)性(xing)能要(yao)(yao)求(qiu)较(jiao)高(gao)或(huo)要(yao)(yao)求(qiu)洁净的(de)(de)场所，宜选用(yong)铝(lv)合(he)金(jin)电(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)架(jia)(jia)(jia)。1．4桥(qiao)(qiao)架(jia)(jia)(jia)在(zai)(zai)有(you)防火要(yao)(yao)求(qiu)的(de)(de)区段内(nei)，可(ke)在(zai)(zai)电(dian)(dian)(dian)缆(lan)梯架(jia)(jia)(jia)，托盘(pan)内(nei)添(tian)加具有(you)耐(nai)(nai)(nai)火或(huo)难燃性(xing)能的(de)(de)板。电(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)架(jia)(jia)(jia)，批发(fa)价(jia)格(ge)，好货源就选三民(min)桥(qiao)(qiao)架(jia)(jia)(jia)。湛江电(dian)(dian)(dian)线桥(qiao)(qiao)架(jia)(jia)(jia)公(gong)(gong)司

1．2桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)水平(ping)敷(fu)(fu)设时距(ju)地(di)面(mian)的(de)高度一般不低(di)于于，垂(chui)直(zhi)敷(fu)(fu)设时距(ju)地(di)面(mian)，但敷(fu)(fu)设在(zai)电(dian)(dian)(dian)(dian)气用房间内时除外。电(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)水平(ping)敷(fu)(fu)设在(zai)设备夹(jia)层(ceng)或(huo)(huo)(huo)马道(dao)且(qie)低(di)于2．5m，应(ying)采(cai)(cai)取保护(hu)接(jie)地(di)措施。1．3桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)、线槽(cao)及其支吊(diao)(diao)架(jia)(jia)使用在(zai)有腐蚀(shi)(shi)性(xing)环(huan)(huan)境中，应(ying)采(cai)(cai)用耐(nai)腐蚀(shi)(shi)的(de)刚性(xing)材(cai)料(liao)制造。或(huo)(huo)(huo)采(cai)(cai)取防(fang)(fang)腐蚀(shi)(shi)处理，防(fang)(fang)腐蚀(shi)(shi)处理方式(shi)应(ying)满足工程环(huan)(huan)境和耐(nai)久性(xing)的(de)要求。对(dui)耐(nai)腐蚀(shi)(shi)性(xing)能(neng)要求较高或(huo)(huo)(huo)要求洁净的(de)场(chang)所(suo)，宜(yi)(yi)选(xuan)用铝(lv)合(he)(he)金电(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)。1．4桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)在(zai)有防(fang)(fang)火(huo)要求的(de)区段(duan)内，可在(zai)电(dian)(dian)(dian)(dian)缆(lan)(lan)梯架(jia)(jia)，托(tuo)盘内添加具有耐(nai)火(huo)或(huo)(huo)(huo)难燃性(xing)能(neng)的(de)板，网等(deng)材(cai)料(liao)构成封闭(bi)或(huo)(huo)(huo)半封闭(bi)式(shi)结构，并采(cai)(cai)取在(zai)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)及其支吊(diao)(diao)架(jia)(jia)表面(mian)涂刷防(fang)(fang)火(huo)涂层(ceng)等(deng)措施。其整体耐(nai)火(huo)性(xing)能(neng)应(ying)满足国家有关规范或(huo)(huo)(huo)标准的(de)要求。在(zai)工程防(fang)(fang)火(huo)要求较高的(de)场(chang)所(suo)．不宜(yi)(yi)采(cai)(cai)用铝(lv)合(he)(he)金电(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)。1．5需要屏蔽电(dian)(dian)(dian)(dian)磁干扰的(de)电(dian)(dian)(dian)(dian)缆(lan)(lan)线路．或(huo)(huo)(huo)有防(fang)(fang)护(hu)外部(bu)影响如户外日照(zhao)，油，腐蚀(shi)(shi)性(xing)液体、易(yi)燃粉尘等(deng)环(huan)(huan)境要求时．应(ying)选(xuan)用无孔托(tuo)盘式(shi)电(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)。1．6在(zai)容易(yi)积聚粉尘的(de)场(chang)所(suo)，电(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)应(ying)选(xuan)用盖板；在(zai)公(gong)共通道(dao)或(huo)(huo)(huo)室外跨越道(dao)路段(duan)．底层(ceng)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)上(shang)宜(yi)(yi)加垫板或(huo)(huo)(huo)使用无孔托(tuo)盘。1．7不同(tong)(tong)电(dian)(dian)(dian)(dian)压、不同(tong)(tong)用途的(de)电(dian)(dian)(dian)(dian)缆(lan)(lan)不宜(yi)(yi)敷(fu)(fu)设在(zai)同(tong)(tong)一层(ceng)电(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)内：(1)1kV以(yi)上(shang)和1kV及以(yi)下的(de)电(dian)(dian)(dian)(dian)缆(lan)(lan)：(2)同(tong)(tong)一路径向一级负荷供电(dian)(dian)(dian)(dian)的(de)双回路电(dian)(dian)(dian)(dian)缆(lan)(lan)；(3)应(ying)急照(zhao)明和其他照(zhao)明的(de)电(dian)(dian)(dian)(dian)缆(lan)(lan)：(4)电(dian)(dian)(dian)(dian)力。肇庆槽(cao)式(shi)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)生产(chan)企业专业电(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)生产(chan)厂家，就找三民桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)！

室外桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)受(shou)温(wen)(wen)度(du)(du)(du)影响较大例(li)如环境高温(wen)(wen)度(du)(du)(du)为(wei)(wei)(wei)40℃，低温(wen)(wen)度(du)(du)(du)为(wei)(wei)(wei)-20℃，则电缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)的(de)(de)大收缩量按下式求(qiu)得：Δt=×10-6×60deg(度(du)(du)(du))×1000mm由此得出结论：温(wen)(wen)差为(wei)(wei)(wei)60℃时,Δι=温(wen)(wen)差为(wei)(wei)(wei)50℃时,Δι=温(wen)(wen)差为(wei)(wei)(wei)40℃时,Δι=工(gong)(gong)程设计(ji)中(zhong)直线(xian)段(duan)电缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)应考虑伸(shen)缩接(jie)(jie)头，伸(shen)缩接(jie)(jie)头的(de)(de)间(jian)距建(jian)(jian)议按以(yi)下取定：当(dang)温(wen)(wen)差为(wei)(wei)(wei)40℃时为(wei)(wei)(wei)50m;当(dang)温(wen)(wen)差为(wei)(wei)(wei)50℃时为(wei)(wei)(wei)40m;桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)接(jie)(jie)地(di)编(bian)辑根据规(gui)范的(de)(de)有关规(gui)定，镀(du)锌(xin)电缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)进行良好的(de)(de)接(jie)(jie)地(di)。(1)镀(du)锌(xin)电缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)直接(jie)(jie)板每个固定螺栓接(jie)(jie)触电阻应小于Ω，此时电缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)可作为(wei)(wei)(wei)接(jie)(jie)地(di)干(gan)线(xian)。惠(hui)州市三(san)民实业有限公(gong)(gong)司(si)，是一(yi)家集电缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)、科研、生(sheng)产、销售、服(fu)务为(wei)(wei)(wei)一(yi)体的(de)(de)企业，公(gong)(gong)司(si)兼营电线(xian)、电缆(lan)等建(jian)(jian)材相关产品。公(gong)(gong)司(si)实力雄厚，全国多个大型重(zhong)(zhong)点(dian)工(gong)(gong)程项目指定供(gong)(gong)应商，并(bing)与多家房地(di)产公(gong)(gong)司(si)和(he)电力安装(zhuang)单位建(jian)(jian)立长期紧密合(he)作关系。桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)产品有托盘式、槽式、梯级式钢制及铝合(he)金(jin)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)系列，组合(he)式及玻璃(li)钢、防火桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)系列。公(gong)(gong)司(si)自成立以(yi)来，顺应经济发(fa)展(zhan)的(de)(de)潮(chao)流，以(yi)满足省、市重(zhong)(zhong)点(dian)建(jian)(jian)设工(gong)(gong)程服(fu)务需要为(wei)(wei)(wei)目标，坚持诚信立业，以(yi)市场为(wei)(wei)(wei)导向，竭诚为(wei)(wei)(wei)客户提供(gong)(gong)好的(de)(de)产品和(he)满意的(de)(de)服(fu)务。喷(pen)粉(fen)电缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)不(bu)宜作接(jie)(jie)地(di)干(gan)线(xian))，每个电缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)(jia)的(de)(de)电阻值可按下式计(ji)算：r=ρ·L/S式中(zhong)：ρ=15×10Ω-6/cm(20℃)；L=长度(du)(du)(du)按100mm计(ji)算。

以满足省、市(shi)重点(dian)建设(she)(she)工(gong)程服务(wu)需要(yao)为目标，坚持诚信立业，以市(shi)场为导(dao)向，竭诚为客户提供好的产品和(he)满意的服务(wu)。直线(xian)(xian)段(duan)：注(zhu)明全(quan)长、桥(qiao)(qiao)架(jia)层数、标高、型号及(ji)规(gui)格(ge)。拐弯(wan)点(dian)和(he)分支(zhi)点(dian):注(zhu)明所用转(zhuan)弯(wan)接板(ban)(ban)的型号及(ji)规(gui)格(ge)。升(sheng)降段(duan)：注(zhu)明标高变化,也(ye)可(ke)(ke)(ke)用局部(bu)大样图或(huo)(huo)(huo)剖(pou)面(mian)(mian)图表示。（5）桥(qiao)(qiao)架(jia)支(zhi)撑点(dian),如立柱、托臂或(huo)(huo)(huo)非标准支(zhi)、构架(jia)的间距、安装方式(shi)、型号规(gui)格(ge)、标高,可(ke)(ke)(ke)同意在平面(mian)(mian)上列表说明,也(ye)可(ke)(ke)(ke)分段(duan)标出用不(bu)同的剖(pou)面(mian)(mian)图、单线(xian)(xian)图或(huo)(huo)(huo)大样图表示。(6)电(dian)缆(lan)(lan)(lan)(lan)引下(xia)(xia)点(dian)位置及(ji)引下(xia)(xia)方式(shi),一(yi)般而言,大批电(dian)缆(lan)(lan)(lan)(lan)引下(xia)(xia)可(ke)(ke)(ke)用垂(chui)直弯(wan)接板(ban)(ban)和(he)垂(chui)直引上架(jia),少量(liang)电(dian)缆(lan)(lan)(lan)(lan)引下(xia)(xia)可(ke)(ke)(ke)用导(dao)板(ban)(ban)或(huo)(huo)(huo)引管注(zhu)明引下(xia)(xia)方式(shi)即可(ke)(ke)(ke)。(7)电(dian)缆(lan)(lan)(lan)(lan)桥(qiao)(qiao)架(jia)宜高出地面(mian)(mian)。(8)电(dian)缆(lan)(lan)(lan)(lan)桥(qiao)(qiao)架(jia)内缆(lan)(lan)(lan)(lan)线(xian)(xian)垂(chui)直敷设(she)(she)时(shi),在缆(lan)(lan)(lan)(lan)线(xian)(xian)的上端和(he)每(mei)间隔(ge)、尾、转(zhuan)弯(wan)及(ji)每(mei)间隔(ge)3~5米(mi)处(chu)进(jin)行固(gu)定(ding)。（9）在吊顶内设(she)(she)置时(shi),槽(cao)盖开启面(mian)(mian)应(ying)(ying)(ying)保(bao)持80毫米(mi)的垂(chui)直净空,线(xian)(xian)槽(cao)截面(mian)(mian)利用率不(bu)应(ying)(ying)(ying)超过50%。(10)布放(fang)在线(xian)(xian)槽(cao)的缆(lan)(lan)(lan)(lan)线(xian)(xian)可(ke)(ke)(ke)以不(bu)绑扎(zha),槽(cao)内缆(lan)(lan)(lan)(lan)线(xian)(xian)应(ying)(ying)(ying)顺(shun)直,尽量(liang)不(bu)交叉,缆(lan)(lan)(lan)(lan)线(xian)(xian)不(bu)应(ying)(ying)(ying)溢(yi)出线(xian)(xian)槽(cao),在缆(lan)(lan)(lan)(lan)线(xian)(xian)进(jin)出线(xian)(xian)槽(cao)部(bu)位、转(zhuan)弯(wan)处(chu)应(ying)(ying)(ying)绑扎(zha)固(gu)定(ding)。垂(chui)直线(xian)(xian)槽(cao)布放(fang)缆(lan)(lan)(lan)(lan)线(xian)(xian)应(ying)(ying)(ying)每(mei)间隔(ge)。(11)在水平、垂(chui)直桥(qiao)(qiao)架(jia)和(he)垂(chui)直线(xian)(xian)槽(cao)中敷设(she)(she)电(dian)缆(lan)(lan)(lan)(lan)时(shi),应(ying)(ying)(ying)对(dui)缆(lan)(lan)(lan)(lan)线(xian)(xian)进(jin)行绑扎(zha)。4对(dui)线(xian)(xian)电(dian)缆(lan)(lan)(lan)(lan)以24根为束。桥(qiao)(qiao)架(jia)厂家就找三(san)民桥(qiao)(qiao)架(jia)。

公司(si)实力雄厚(hou)，全国多个大型重(zhong)点工程项目指定(ding)(ding)供应商，并与多家房地产(chan)(chan)公司(si)和电(dian)(dian)力安(an)(an)装(zhuang)单位(wei)建立(li)(li)(li)长(zhang)(zhang)(zhang)期紧密合(he)作关系。桥(qiao)(qiao)架(jia)(jia)产(chan)(chan)品有托盘式(shi)、槽式(shi)、梯级式(shi)钢制及(ji)铝(lv)合(he)金桥(qiao)(qiao)架(jia)(jia)系列(lie)，组合(he)式(shi)及(ji)玻璃钢、防(fang)火桥(qiao)(qiao)架(jia)(jia)系列(lie)。公司(si)自成立(li)(li)(li)以来，顺应经济(ji)发展(zhan)的(de)(de)潮流，以满足省、市(shi)重(zhong)点建设工程服(fu)务需(xu)要(yao)为(wei)(wei)(wei)目标，坚持诚(cheng)信立(li)(li)(li)业，以市(shi)场为(wei)(wei)(wei)导(dao)向，竭诚(cheng)为(wei)(wei)(wei)客户提(ti)供好的(de)(de)产(chan)(chan)品和满意的(de)(de)服(fu)务。在下列(lie)情况下设直(zhi)至架(jia)(jia)或吊架(jia)(jia)：线槽接头处；间(jian)距3m；离开线槽两端口；转(zhuan)弯处。5、材(cai)料统(tong)计(1)桥(qiao)(qiao)架(jia)(jia)：分别统(tong)计出各种(zhong)型号规(gui)格桥(qiao)(qiao)架(jia)(jia)的(de)(de)全长(zhang)(zhang)(zhang),除(chu)以该(gai)桥(qiao)(qiao)架(jia)(jia)的(de)(de)标准(zhun)长(zhang)(zhang)(zhang)度,得(de)出桥(qiao)(qiao)架(jia)(jia)的(de)(de)数(shu)量(liang)外,再增(zeng)加1%－2%的(de)(de)余量(liang)。(2)立(li)(li)(li)柱(zhu)：如(ru)采用(yong)统(tong)一规(gui)格的(de)(de)立(li)(li)(li)柱(zhu),可用(yong)桥(qiao)(qiao)架(jia)(jia)全长(zhang)(zhang)(zhang)除(chu)以平均(jun)立(li)(li)(li)柱(zhu)间(jian)距,得(de)出立(li)(li)(li)柱(zhu)数(shu),再增(zeng)加2%～4%余量(liang)。如(ru)立(li)(li)(li)柱(zhu)规(gui)格不一,则(ze)需(xu)分别统(tong)计。(3)托臂：桥(qiao)(qiao)架(jia)(jia)全长(zhang)(zhang)(zhang)除(chu)以托臂平均(jun)间(jian)距,再增(zeng)加1%～2%余量(liang),极为(wei)(wei)(wei)总需(xu)量(liang)。(4)其它(ta)部件(jian)：按其主体(ti)数(shu)乘以一定(ding)(ding)比例。视(shi)总厂(chang)而定(ding)(ding))求得(de)其总数(shu)。桥(qiao)(qiao)架(jia)(jia)桥(qiao)(qiao)架(jia)(jia)说明(ming)托盘式(shi)电(dian)(dian)缆桥(qiao)(qiao)架(jia)(jia)：托盘式(shi)电(dian)(dian)缆桥(qiao)(qiao)架(jia)(jia)是石油、化工、电(dian)(dian)力、轻工、电(dian)(dian)视(shi)、电(dian)(dian)讯等方(fang)面应用(yong)的(de)(de)一种(zhong)。它(ta)具有重(zhong)量(liang)轻，载荷大，造型美观、结(jie)构简单，安(an)(an)装(zhuang)方(fang)便等优点，它(ta)既(ji)适用(yong)于(yu)动(dong)力电(dian)(dian)缆的(de)(de)安(an)(an)装(zhuang)，也(ye)适用(yong)于(yu)控制电(dian)(dian)缆的(de)(de)敷设。电(dian)(dian)线电(dian)(dian)缆桥(qiao)(qiao)架(jia)(jia)，三民(min)桥(qiao)(qiao)架(jia)(jia)，耐腐蚀(shi)抗老化。云浮不锈钢桥(qiao)(qiao)架(jia)(jia)批发

电缆桥(qiao)架认准三(san)民桥(qiao)架，工厂直销。湛江(jiang)电线桥(qiao)架公(gong)司

3)按大(da)(da)的(de)(de)(de)电缆(lan)(lan)总均(jun)布荷(he)载(zai)(zai)值(zhi)来验算桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)强度(du)(du)(du)。验算式(shi)(shi)(shi)如下(xia)：Q使用(yong)=q1+q2式(shi)(shi)(shi)中：q1--电缆(lan)(lan)的(de)(de)(de)均(jun)布荷(he)载(zai)(zai)（各层的(de)(de)(de)均(jun)布荷(he)载(zai)(zai)中取(qu)(qu)大(da)(da)值(zhi)）（kN/m2），均(jun)布荷(he)载(zai)(zai)是托(tuo)盘(pan)、梯(ti)架(jia)(jia)(jia)(jia)或电缆(lan)(lan)槽的(de)(de)(de)荷(he)载(zai)(zai)；q2--考虑电缆(lan)(lan)敷设(she)或检修时，人(ren)的(de)(de)(de)重(zhong)量(liang)等效(xiao)的(de)(de)(de)均(jun)布荷(he)载(zai)(zai)（kN/m2）,q2值(zhi)的(de)(de)(de)计(ji)算，人(ren)的(de)(de)(de)重(zhong)量(liang)一(yi)(yi)般按p=90kg计(ji)。表示集中荷(he)载(zai)(zai)和(he)均(jun)布荷(he)载(zai)(zai)的(de)(de)(de)弯距(ju)(ju)如图(tu)2按大(da)(da)弯距(ju)(ju)相等的(de)(de)(de)条件(jian)折算：式(shi)(shi)(shi)中：P--1人(ren)的(de)(de)(de)荷(he)载(zai)(zai)(kg)ι--1个支(zhi)撑(cheng)点(dian)间(jian)距(ju)(ju)(若(ruo)支(zhi)点(dian)间(jian)距(ju)(ju)不等时取(qu)(qu)大(da)(da)值(zhi))(m)q2--1人(ren)的(de)(de)(de)等效(xiao)均(jun)布荷(he)载(zai)(zai)(kg/m)根据上(shang)述(shu)初步确定的(de)(de)(de)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)型号、规格及支(zhi)点(dian)间(jian)距(ju)(ju)，查阅生产厂家(jia)的(de)(de)(de)样本(ben)资料，反复核查间(jian)距(ju)(ju)和(he)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)型号，直至满足负荷(he)要(yao)求为(wei)止(zhi)。(4)挠(nao)度(du)(du)(du)挠(nao)度(du)(du)(du)值(zhi)如何取(qu)(qu)定尚(shang)无明确的(de)(de)(de)规定，在(zai)(zai)重(zhong)负区(qu)显然应(ying)考虑减小(xiao)绕度(du)(du)(du)，这意味着钢(gang)材(cai)的(de)(de)(de)用(yong)量(liang)会相应(ying)增加，因此计(ji)算时只要(yao)充(chong)分(fen)利用(yong)钢(gang)材(cai)的(de)(de)(de)大(da)(da)允许应(ying)力，并保证有足够的(de)(de)(de)安全系(xi)数，一(yi)(yi)般大(da)(da)挠(nao)度(du)(du)(du)与跨距(ju)(ju)(支(zhi)撑(cheng)点(dian)间(jian)距(ju)(ju))之比(bi)取(qu)(qu)1/250~1/150为(wei)宜(yi)。桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)结(jie)构(gou)形(xing)(xing)式(shi)(shi)(shi)编辑电缆(lan)(lan)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)载(zai)(zai)荷(he)曲线槽式(shi)(shi)(shi)电缆(lan)(lan)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)(de)结(jie)构(gou)形(xing)(xing)式(shi)(shi)(shi)组合(he)式(shi)(shi)(shi)电缆(lan)(lan)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)(de)结(jie)构(gou)形(xing)(xing)式(shi)(shi)(shi)桁架(jia)(jia)(jia)(jia)式(shi)(shi)(shi)梯(ti)架(jia)(jia)(jia)(jia)、大(da)(da)跨距(ju)(ju)桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)(de)结(jie)构(gou)形(xing)(xing)式(shi)(shi)(shi)1．桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)(de)选择(ze)1．1在(zai)(zai)工程设(she)计(ji)中，桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)(de)布置应(ying)根据经济合(he)理性、技术可行性、运行安全性等因素综合(he)比(bi)较，以(yi)确定佳方案，还要(yao)充(chong)分(fen)满足施工安装(zhuang)、维护(hu)检修及电缆(lan)(lan)敷设(she)的(de)(de)(de)要(yao)求。湛(zhan)江电线桥(qiao)(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)公(gong)司

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