槽(cao)(cao)(cao)(cao)盖开启面(mian)应(ying)(ying)(ying)保持80(毫米的(de)(de)垂直(zhi)净空,线(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)(cao)截面(mian)利用率(lv)不(bu)应(ying)(ying)(ying)超(chao)过50%。(10)布放在(zai)(zai)线(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)(cao)的(de)(de)缆(lan)(lan)线(xian)(xian)(xian)(xian)可以(yi)不(bu)绑扎(zha)(zha),槽(cao)(cao)(cao)(cao)内缆(lan)(lan)线(xian)(xian)(xian)(xian)应(ying)(ying)(ying)顺直(zhi),槽(cao)(cao)(cao)(cao)内缆(lan)(lan)线(xian)(xian)(xian)(xian)应(ying)(ying)(ying)顺直(zhi),尽量不(bu)交叉,缆(lan)(lan)线(xian)(xian)(xian)(xian)不(bu)应(ying)(ying)(ying)溢(yi)出线(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)(cao),在(zai)(zai)缆(lan)(lan)线(xian)(xian)(xian)(xian)进出线(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)(cao)部(bu)位(wei),转(zhuan)弯处应(ying)(ying)(ying)绑扎(zha)(zha)固(gu)定(ding)(ding)。垂直(zhi)线(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)(cao)布放缆(lan)(lan)线(xian)(xian)(xian)(xian)应(ying)(ying)(ying)每间(jian)(jian)隔(11)在(zai)(zai)水(shui)平(ping)、垂直(zhi)桥(qiao)(qiao)(qiao)架和垂直(zhi)线(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)(cao)中(zhong)敷(fu)(fu)设线(xian)(xian)(xian)(xian)时(shi),应(ying)(ying)(ying)对缆(lan)(lan)线(xian)(xian)(xian)(xian)进行绑扎(zha)(zha)。4对线(xian)(xian)(xian)(xian)电(dian)(dian)(dian)缆(lan)(lan)以(yi)24根为(wei)(wei)束。25对或以(yi)上主干线(xian)(xian)(xian)(xian)电(dian)(dian)(dian)缆(lan)(lan)、光(guang)缆(lan)(lan)及(ji)其它(ta)信号电(dian)(dian)(dian)缆(lan)(lan)应(ying)(ying)(ying)根据缆(lan)(lan)线(xian)(xian)(xian)(xian)的(de)(de)类(lei)型(xing)、缆(lan)(lan)径、缆(lan)(lan)线(xian)(xian)(xian)(xian)芯(xin)数(shu)分束绑扎(zha)(zha)。绑扎(zha)(zha)间(jian)(jian)距不(bu)宜(yi)大于。(12)桥(qiao)(qiao)(qiao)架水(shui)平(ping)敷(fu)(fu)设时(shi),支撑间(jian)(jian)距一(yi)般为(wei)(wei)。(13)金(jin)属(shu)线(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)(cao)敷(fu)(fu)设时(shi),在(zai)(zai)下(xia)列情况(kuang)下(xia)设直(zhi)至架或吊架：线(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)(cao)接头处；间(jian)(jian)距3m；离开线(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)(cao)两端口；转(zhuan)弯处。5、材料(liao)统计。惠州(zhou)市三民实(shi)业有(you)限公(gong)司(si)(si)，是一(yi)家集电(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)(qiao)架、科研、生产、销(xiao)售、服务为(wei)(wei)一(yi)体的(de)(de)企业，公(gong)司(si)(si)兼营电(dian)(dian)(dian)线(xian)(xian)(xian)(xian)、电(dian)(dian)(dian)缆(lan)(lan)等建(jian)材相关(guan)产品(pin)。公(gong)司(si)(si)实(shi)力雄厚，全国多个大型(xing)重点工程项目指(zhi)定(ding)(ding)供(gong)(gong)应(ying)(ying)(ying)商，并(bing)与多家房地产公(gong)司(si)(si)和电(dian)(dian)(dian)力安装(zhuang)单位(wei)建(jian)立(li)长期紧密合作(zuo)关(guan)系(xi)。桥(qiao)(qiao)(qiao)架产品(pin)有(you)托(tuo)盘式、槽(cao)(cao)(cao)(cao)式、梯(ti)级式钢制及(ji)铝合金(jin)桥(qiao)(qiao)(qiao)架系(xi)列，组(zu)合式及(ji)玻璃(li)钢、防(fang)火桥(qiao)(qiao)(qiao)架系(xi)列。公(gong)司(si)(si)自成立(li)以(yi)来，顺应(ying)(ying)(ying)经济发展的(de)(de)潮流，以(yi)满足(zu)省、市重点建(jian)设工程服务需要(yao)为(wei)(wei)目标，坚持诚(cheng)信立(li)业，以(yi)市场为(wei)(wei)导向，竭诚(cheng)为(wei)(wei)客(ke)户提供(gong)(gong)好的(de)(de)产品(pin)和满意的(de)(de)服务。电(dian)(dian)(dian)缆(lan)(lan)线(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)(cao)实(shi)力供(gong)(gong)应(ying)(ying)(ying)商？三民桥(qiao)(qiao)(qiao)架！清远金(jin)属(shu)线(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)(cao)厂

以(yi)满(man)(man)足省、市重点建设工(gong)程服(fu)务需要(yao)为(wei)目标，坚持诚(cheng)信(xin)立业，以(yi)市场(chang)为(wei)导向，竭诚(cheng)为(wei)客户提供好(hao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)产(chan)品和满(man)(man)意的(de)(de)(de)(de)(de)(de)(de)(de)(de)服(fu)务。公(gong)司拥有(you)一(yi)(yi)个(ge)和谐团(tuan)结(jie)、富有(you)激(ji)情(qing)、积(ji)极向上(shang)(shang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)工(gong)作团(tuan)队。公(gong)司注重个(ge)人(ren)发展，给(ji)予每位员工(gong)足够的(de)(de)(de)(de)(de)(de)(de)(de)(de)自我(wo)发挥空间(jian)(jian)，努(nu)力(li)(li)培养(yang)团(tuan)队之间(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)相互了(le)解，加强团(tuan)队的(de)(de)(de)(de)(de)(de)(de)(de)(de)整体配(pei)合(he)，挖(wa)掘团(tuan)队潜(qian)能，打造(zao)高效团(tuan)队。公(gong)司一(yi)(yi)直(zhi)以(yi)来推崇“诚(cheng)信(xin)是金，共(gong)创(chuang)共(gong)赢”的(de)(de)(de)(de)(de)(de)(de)(de)(de)营销理(li)念，在(zai)(zai)不断提升产(chan)品竞争力(li)(li)的(de)(de)(de)(de)(de)(de)(de)(de)(de)同(tong)(tong)时(shi)，致力(li)(li)于诚(cheng)信(xin)的(de)(de)(de)(de)(de)(de)(de)(de)(de)经(jing)营，用心的(de)(de)(de)(de)(de)(de)(de)(de)(de)服(fu)务，真诚(cheng)与(yu)新(xin)老(lao)客户携手(shou)共(gong)创(chuang)新(xin)的(de)(de)(de)(de)(de)(de)(de)(de)(de)辉煌!生(sheng)产(chan)厂提供的(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)允许(xu)载荷量应该大(da)(da)于实(shi)际载荷量G总。当电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)带护(hu)罩在(zai)(zai)室外安装时(shi)，还应计人(ren)电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)承(cheng)受的(de)(de)(de)(de)(de)(de)(de)(de)(de)大(da)(da)冰雪(xue)等载荷的(de)(de)(de)(de)(de)(de)(de)(de)(de)影响。电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)宽度b的(de)(de)(de)(de)(de)(de)(de)(de)(de)确(que)定是随着电(dian)(dian)(dian)(dian)(dian)力(li)(li)电(dian)(dian)(dian)(dian)(dian)缆(lan)和控(kong)(kong)制(zhi)电(dian)(dian)(dian)(dian)(dian)缆(lan)工(gong)作制(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)不同(tong)(tong)而有(you)所(suo)区别。由(you)于电(dian)(dian)(dian)(dian)(dian)力(li)(li)电(dian)(dian)(dian)(dian)(dian)缆(lan)在(zai)(zai)桥(qiao)(qiao)(qiao)架(jia)(jia)内一(yi)(yi)般是单层水平排(pai)放(fang)(fang)，所(suo)以(yi)其安装桥(qiao)(qiao)(qiao)架(jia)(jia)宽度b为(wei)：b=n1(d1+k1)+n2(d2+k2)+n3(d3+k3)+……式中：d1、d2、d3……为(wei)桥(qiao)(qiao)(qiao)架(jia)(jia)内各种电(dian)(dian)(dian)(dian)(dian)缆(lan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)外径，单位为(wei)mmn1、n2、n3……为(wei)上(shang)(shang)述同(tong)(tong)种型(xing)号规格电(dian)(dian)(dian)(dian)(dian)缆(lan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)根(gen)数。K1、k2、k3……为(wei)上(shang)(shang)述电(dian)(dian)(dian)(dian)(dian)缆(lan)放(fang)(fang)置时(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)间(jian)(jian)距(ju)。其值小应大(da)(da)于电(dian)(dian)(dian)(dian)(dian)缆(lan)直(zhi)径的(de)(de)(de)(de)(de)(de)(de)(de)(de)1/4。一(yi)(yi)般情(qing)况下，控(kong)(kong)制(zhi)电(dian)(dian)(dian)(dian)(dian)缆(lan)在(zai)(zai)桥(qiao)(qiao)(qiao)架(jia)(jia)内既可以(yi)水平排(pai)列，也可以(yi)堆放(fang)(fang)。以(yi)其桥(qiao)(qiao)(qiao)架(jia)(jia)内控(kong)(kong)制(zhi)电(dian)(dian)(dian)(dian)(dian)缆(lan)总截面(mian)s不超(chao)过电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)(jia)总截面(mian)s。的(de)(de)(de)(de)(de)(de)(de)(de)(de)40%为(wei)原则。梅州线(xian)槽线(xian)槽厂家就要(yao)找三民(min)桥(qiao)(qiao)(qiao)架(jia)(jia)。

桥(qiao)(qiao)架(jia)产品(pin)有托盘(pan)式(shi)(shi)、槽式(shi)(shi)、梯级式(shi)(shi)钢制及铝合金桥(qiao)(qiao)架(jia)系列(lie)，组合式(shi)(shi)及玻璃钢、防(fang)火(huo)桥(qiao)(qiao)架(jia)系列(lie)。公(gong)(gong)司自成立(li)以来(lai)，顺应经济发(fa)(fa)展的(de)(de)潮流(liu)，以满足省、市重点建设(she)工(gong)程服务(wu)需要为(wei)目(mu)标，坚持(chi)诚信(xin)立(li)业，以市场为(wei)导(dao)向，竭诚为(wei)客户(hu)提供好的(de)(de)产品(pin)和(he)满意的(de)(de)服务(wu)。公(gong)(gong)司拥有一(yi)(yi)个和(he)谐团(tuan)(tuan)结、富有激情、积(ji)极向上的(de)(de)工(gong)作团(tuan)(tuan)队(dui)(dui)。公(gong)(gong)司注重个人发(fa)(fa)展，给予每(mei)位员工(gong)足够的(de)(de)自我发(fa)(fa)挥空间，努力(li)培养团(tuan)(tuan)队(dui)(dui)之间的(de)(de)相互了解，加强团(tuan)(tuan)队(dui)(dui)的(de)(de)整体(ti)配合，挖掘团(tuan)(tuan)队(dui)(dui)潜能，打造高效团(tuan)(tuan)队(dui)(dui)。公(gong)(gong)司一(yi)(yi)直(zhi)(zhi)以来(lai)推崇“诚信(xin)是金，共(gong)创(chuang)共(gong)赢”的(de)(de)营(ying)销理念，在不断提升产品(pin)竞争力(li)的(de)(de)同时(shi)，致力(li)于(yu)诚信(xin)的(de)(de)经营(ying)，用心的(de)(de)服务(wu)，真诚与新(xin)老客户(hu)携手共(gong)创(chuang)新(xin)的(de)(de)辉(hui)煌!应按桥(qiao)(qiao)架(jia)规格(ge)、层数、跨(kua)距(ju)(ju)等(deng)条(tiao)件(jian)配置(zhi)。并应满足荷载的(de)(de)要求。4、桥(qiao)(qiao)架(jia)横截面积(ji)的(de)(de)选择(ze)见表三、支(zhi)、吊架(jia)的(de)(de)配置(zhi)1、户(hu)内支(zhi)、吊短跨(kua)距(ju)(ju)一(yi)(yi)般(ban)采取。户(hu)外(wai)立(li)柱(zhu)中跨(kua)距(ju)(ju)一(yi)(yi)般(ban)采取6m。2、非直(zhi)(zhi)线(xian)段(duan)的(de)(de)支(zhi)、吊架(jia)配置(zhi)就遵循以下(xia)原则(ze)。当桥(qiao)(qiao)架(jia)宽度(du)300mm时(shi)，除(chu)符合下(xia)述条(tiao)件(jian)外(wai)，在非直(zhi)(zhi)线(xian)段(duan)中部(bu)还应增设(she)一(yi)(yi)个支(zhi)、吊架(jia)。3、桥(qiao)(qiao)架(jia)多层设(she)置(zhi)时(shi)层间中心距(ju)(ju)为(wei)200，250，300，350mm。4、桥(qiao)(qiao)架(jia)直(zhi)(zhi)线(xian)段(duan)每(mei)隔50m应予留(liu)伸缩缝(feng)20-30mm（金属桥(qiao)(qiao)架(jia)）。四、防(fang)火(huo)要求桥(qiao)(qiao)架(jia)防(fang)火(huo)的(de)(de)区段(duan)，必须(xu)采用钢制或(huo)不燃、阻燃材(cai)料。

沉降)缝时(shi)(shi)应(ying)(ying)(ying)留(liu)有(you)O-30mm补偿余(yu)量．其连接宜采(cai)用伸缩连接板。9.电(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)梯架(jia)(jia)、托(tuo)盘(pan)宽度和高度的(de)(de)(de)(de)选(xuan)择应(ying)(ying)(ying)符合(he)(he)填(tian)充率的(de)(de)(de)(de)要求，电(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)在(zai)梯架(jia)(jia)、托(tuo)盘(pan)内(nei)的(de)(de)(de)(de)填(tian)充率一(yi)(yi)般情况下(xia)，动力(li)电(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)可取40%-50%，控(kong)制电(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)可取50%。70%．且宜预留(liu)l0%一(yi)(yi)252工(gong)程发展裕量。10.在(zai)选(xuan)择电(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)架(jia)(jia)的(de)(de)(de)(de)荷载(zai)等(deng)级时(shi)(shi)如果电(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)架(jia)(jia)的(de)(de)(de)(de)支(zhi)吊架(jia)(jia)的(de)(de)(de)(de)实际(ji)(ji)跨距不等(deng)于(yu)2m时(shi)(shi)．则工(gong)作均(jun)布荷载(zai)应(ying)(ying)(ying)满足：式(shi)中(zhong)(zhong)(zhong)qG----工(gong)作均(jun)布荷载(zai)，kN/m；qE----额定(ding)(ding)均(jun)布荷载(zai)，kN/m；LG----实际(ji)(ji)跨距，m。电(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)架(jia)(jia)设计公(gong)(gong)式(shi)电(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)架(jia)(jia)的(de)(de)(de)(de)设计使用都(dou)是(shi)有(you)一(yi)(yi)定(ding)(ding)的(de)(de)(de)(de)公(gong)(gong)式(shi)可循的(de)(de)(de)(de)，下(xia)面(mian)介绍(shao)下(xia)具体的(de)(de)(de)(de)公(gong)(gong)式(shi)：在(zai)设计计算中(zhong)(zhong)(zhong)，若电(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)架(jia)(jia)的(de)(de)(de)(de)实际(ji)(ji)载(zai)荷量用G总(zong)表示：则：G总(zong)=n1g1n2g2n3g3……式(shi)中(zhong)(zhong)(zhong)：g1g2、g3……分别(bie)为(wei)桥(qiao)架(jia)(jia)内(nei)各(ge)种规(gui)格(ge)型号(hao)电(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)单(dan)位(wei)长度重量。单(dan)位(wei)为(wei)。kg/m)n1、n2、n3为(wei)同型号(hao)规(gui)格(ge)电(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)的(de)(de)(de)(de)根数。在(zai)选(xuan)取时(shi)(shi)。惠州(zhou)市(shi)三民(min)实业有(you)限公(gong)(gong)司(si)，是(shi)一(yi)(yi)家集电(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)桥(qiao)架(jia)(jia)、科研、生产、销(xiao)售(shou)、服务为(wei)一(yi)(yi)体的(de)(de)(de)(de)企业，公(gong)(gong)司(si)兼营电(dian)(dian)(dian)线(xian)(xian)、电(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)(lan)等(deng)建材相关产品。公(gong)(gong)司(si)实力(li)雄厚，全国多个大(da)型重点工(gong)程项目指定(ding)(ding)供应(ying)(ying)(ying)商，并与多家房地产公(gong)(gong)司(si)和电(dian)(dian)(dian)力(li)安(an)装单(dan)位(wei)建立长期紧密(mi)合(he)(he)作关系。桥(qiao)架(jia)(jia)产品有(you)托(tuo)盘(pan)式(shi)、槽式(shi)、梯级式(shi)钢(gang)(gang)制及铝合(he)(he)金桥(qiao)架(jia)(jia)系列(lie)，组(zu)合(he)(he)式(shi)及玻(bo)璃钢(gang)(gang)、防火桥(qiao)架(jia)(jia)系列(lie)。公(gong)(gong)司(si)自成(cheng)立以来(lai)，顺(shun)应(ying)(ying)(ying)经济发展的(de)(de)(de)(de)潮流。梯式(shi)线(xian)(xian)槽就找(zhao)三民(min)桥(qiao)架(jia)(jia)。

kg/m)n1、n2、n3为(wei)(wei)(wei)同型(xing)(xing)号规(gui)格电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)的(de)(de)(de)根数。在(zai)选取(qu)时(shi)，生产厂提(ti)供的(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)允许载(zai)荷量应该大(da)于实际载(zai)荷量G总。当(dang)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)带护(hu)(hu)罩在(zai)室外(wai)安(an)(an)装时(shi)，还应计人电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)承受的(de)(de)(de)大(da)冰雪等载(zai)荷的(de)(de)(de)影响。电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)宽(kuan)度(du)b的(de)(de)(de)确(que)定(ding)是随着电(dian)(dian)(dian)(dian)(dian)(dian)力电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)和控制(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)工作制(zhi)的(de)(de)(de)不同而有所(suo)区别。由于电(dian)(dian)(dian)(dian)(dian)(dian)力电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)在(zai)桥(qiao)(qiao)架(jia)(jia)(jia)内(nei)一般(ban)是单(dan)层水平(ping)排放(fang)(fang)，所(suo)以(yi)其(qi)(qi)(qi)安(an)(an)装桥(qiao)(qiao)架(jia)(jia)(jia)宽(kuan)度(du)b为(wei)(wei)(wei)：b=n1(d1+k1)+n2(d2+k2)+n3(d3+k3)+……式(shi)中：d1、d2、d3……为(wei)(wei)(wei)桥(qiao)(qiao)架(jia)(jia)(jia)内(nei)各(ge)(ge)种(zhong)(zhong)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)的(de)(de)(de)外(wai)径(jing)，单(dan)位为(wei)(wei)(wei)mmn1、n2、n3……为(wei)(wei)(wei)上述同种(zhong)(zhong)型(xing)(xing)号规(gui)格电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)的(de)(de)(de)根数。K1、k2、k3……为(wei)(wei)(wei)上述电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)放(fang)(fang)置时(shi)的(de)(de)(de)间距。其(qi)(qi)(qi)值小应大(da)于电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)直径(jing)的(de)(de)(de)1/4。一般(ban)情况(kuang)下，控制(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)在(zai)桥(qiao)(qiao)架(jia)(jia)(jia)内(nei)既可以(yi)水平(ping)排列，也可以(yi)堆放(fang)(fang)。以(yi)其(qi)(qi)(qi)桥(qiao)(qiao)架(jia)(jia)(jia)内(nei)控制(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)总截(jie)面s不超过(guo)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)总截(jie)面s。的(de)(de)(de)40%为(wei)(wei)(wei)原(yuan)则。控制(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)的(de)(de)(de)总截(jie)面s为(wei)(wei)(wei)：其(qi)(qi)(qi)中：s1、s2、s3……为(wei)(wei)(wei)桥(qiao)(qiao)架(jia)(jia)(jia)内(nei)各(ge)(ge)种(zhong)(zhong)控制(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)的(de)(de)(de)截(jie)面积(包括护(hu)(hu)层部分)单(dan)位为(wei)(wei)(wei)mm，d3……为(wei)(wei)(wei)桥(qiao)(qiao)架(jia)(jia)(jia)内(nei)各(ge)(ge)种(zhong)(zhong)控制(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)的(de)(de)(de)外(wai)径(jing)，单(dan)位为(wei)(wei)(wei)mm;nnn……为(wei)(wei)(wei)上述同种(zhong)(zhong)型(xing)(xing)号规(gui)格电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)的(de)(de)(de)根数。相(xiang)应的(de)(de)(de)控制(zhi)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)的(de)(de)(de)宽(kuan)度(du)为(wei)(wei)(wei)b：式(shi)中h为(wei)(wei)(wei)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)的(de)(de)(de)高度(du)，单(dan)位为(wei)(wei)(wei)mm。当(dang)电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)桥(qiao)(qiao)架(jia)(jia)(jia)在(zai)室内(nei)安(an)(an)装时(shi)，为(wei)(wei)(wei)保(bao)证桥(qiao)(qiao)架(jia)(jia)(jia)平(ping)直美观，整齐一致，它(ta)的(de)(de)(de)水平(ping)方向载(zai)荷形变一般(ban)应控制(zhi)在(zai)。防火(huo)线(xian)槽(cao)(cao)就找三民桥(qiao)(qiao)架(jia)(jia)(jia)。揭阳防火(huo)线(xian)槽(cao)(cao)弯头

电(dian)缆线槽，现品现货(huo)，技术支持，良好(hao)服务，三民桥(qiao)架。清(qing)远金(jin)属线槽厂

则(ze)应(ying)(ying)将跨(kua)距适当(dang)(dang)缩小。附加荷(he)载在室(shi)外是指冰雪、风和电(dian)(dian)(dian)(dian)(dian)磁(ci)力所形成的(de)(de)(de)荷(he)载,它与(yu)安装(zhuang)场所的(de)(de)(de)地(di)区(qu)自然(ran)气(qi)象条(tiao)件和带电(dian)(dian)(dian)(dian)(dian)体(ti)的(de)(de)(de)性质(zhi)有(you)关(guan),设(she)计(ji)中应(ying)(ying)根据各(ge)种条(tiao)件加以(yi)计(ji)算。电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)胀缩问(wen)题由于(yu)环(huan)境(jing)温(wen)(wen)度变化(hua),钢(gang)质(zhi)电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)会出现热胀冷缩的(de)(de)(de)现象。室(shi)外桥(qiao)(qiao)(qiao)架(jia)受温(wen)(wen)度影响较(jiao)大(da)例如环(huan)境(jing)高(gao)温(wen)(wen)度为(wei)(wei)40℃,低温(wen)(wen)度为(wei)(wei)-20℃,则(ze)电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)的(de)(de)(de)大(da)收缩量(liang)按(an)下式(shi)(shi)求得：Δt=×10-6×60deg(度)×1000mm由此(ci)(ci)得出结论：温(wen)(wen)差(cha)为(wei)(wei)60℃时(shi)(shi),Δι=温(wen)(wen)差(cha)为(wei)(wei)50℃时(shi)(shi),Δι=温(wen)(wen)差(cha)为(wei)(wei)40℃时(shi)(shi),Δι=工程设(she)计(ji)中直线段电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)应(ying)(ying)考虑伸缩接(jie)(jie)头(tou),伸缩接(jie)(jie)头(tou)的(de)(de)(de)间距建议(yi)按(an)以(yi)下取(qu)定(ding)：当(dang)(dang)温(wen)(wen)差(cha)为(wei)(wei)40℃时(shi)(shi)为(wei)(wei)50m;当(dang)(dang)温(wen)(wen)差(cha)为(wei)(wei)50℃时(shi)(shi)为(wei)(wei)40m;当(dang)(dang)温(wen)(wen)差(cha)为(wei)(wei)60℃时(shi)(shi)为(wei)(wei)40m;电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)接(jie)(jie)地(di)根据规范的(de)(de)(de)有(you)关(guan)规定(ding),镀锌电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)进(jin)行(xing)良(liang)好的(de)(de)(de)接(jie)(jie)地(di)。(1)镀锌电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)直接(jie)(jie)板每个(ge)固定(ding)螺(luo)栓(shuan)(shuan)接(jie)(jie)触(chu)电(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)应(ying)(ying)小于(yu)Ω,此(ci)(ci)时(shi)(shi)电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)可作为(wei)(wei)接(jie)(jie)地(di)干线(喷(pen)粉电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)不(bu)宜作接(jie)(jie)地(di)干线)，每个(ge)电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)的(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)值可按(an)下式(shi)(shi)计(ji)算：r=ρ·L/S式(shi)(shi)中：ρ=15×10Ω-6/cm(20℃)；L=长(zhang)(zhang)度按(an)100mm计(ji)算；S=截面积(ji)cm2。(2)当(dang)(dang)电(dian)(dian)(dian)(dian)(dian)缆(lan)桥(qiao)(qiao)(qiao)架(jia)安装(zhuang)连接(jie)(jie)程整体(ti)后(hou),每根梯(ti)边(或每个(ge)电(dian)(dian)(dian)(dian)(dian)缆(lan)槽(cao))的(de)(de)(de)电(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)为(wei)(wei)：R=L(r+1/3r’)式(shi)(shi)中：R--梯(ti)边，即（电(dian)(dian)(dian)(dian)(dian)缆(lan)槽(cao)）全长(zhang)(zhang)总电(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)（mΩ）；r--梯(ti)边单位(wei)长(zhang)(zhang)度电(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)（mΩ/m）r’--直接(jie)(jie)板固定(ding)螺(luo)栓(shuan)(shuan)接(jie)(jie)触(chu)电(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)。清远(yuan)金(jin)属线槽(cao)厂(chang)

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