南昌電纜橋架的施工要點及安裝方法
時間: 2020-09-09 16:24:56來源: 江西宏輝電氣設備有限公司
南昌電纜橋架選型設計：強、弱電線路應分槽敷設，強、弱電在分線盒(箱)交叉時需采用金屬分離板隔開，強、弱電的導線不得在線槽內直接接觸。地面線槽內的各種配線僅允許在分線盒出線口處接頭。地面線槽在施工安裝中，要求全部線槽管連成一個可靠的接地整體。
1、測量定位(wei)：
用彈線(xian)法標識橋架(jia)的安(an)裝(zhuang)(zhuang)位置(zhi)，確定(ding)(ding)好(hao)支架(jia)的固定(ding)(ding)位置(zhi)，做好(hao)標記。豎井內橋架(jia)定(ding)(ding)位應先(xian)用懸鋼絲法確定(ding)(ding)安(an)裝(zhuang)(zhuang)基準(zhun)線(xian)，如預留洞不合(he)適，應及時調整，并做好(hao)修(xiu)補。
2、電(dian)纜橋(qiao)架制(zhi)作安裝(zhuang)
我們(men)依據施(shi)工(gong)圖設(she)計標高(gao)及(ji)(ji)橋(qiao)架(jia)(jia)(jia)(jia)規格，進行(xing)定(ding)位，然后(hou)依照測量尺寸制作(zuo)支(zhi)(zhi)架(jia)(jia)(jia)(jia)，支(zhi)(zhi)架(jia)(jia)(jia)(jia)進行(xing)工(gong)廠化生(sheng)產。在(zai)(zai)無吊(diao)(diao)頂(ding)(ding)處(chu)(chu)沿梁底吊(diao)(diao)裝(zhuang)或靠墻(qiang)支(zhi)(zhi)架(jia)(jia)(jia)(jia)安(an)(an)(an)裝(zhuang)，在(zai)(zai)有吊(diao)(diao)頂(ding)(ding)處(chu)(chu)在(zai)(zai)吊(diao)(diao)頂(ding)(ding)內(nei)吊(diao)(diao)裝(zhuang)或靠墻(qiang)支(zhi)(zhi)架(jia)(jia)(jia)(jia)安(an)(an)(an)裝(zhuang)。在(zai)(zai)無吊(diao)(diao)頂(ding)(ding)的(de)公共(gong)場所(suo)結合(he)結構(gou)構(gou)件并考慮建(jian)筑(zhu)美觀(guan)及(ji)(ji)檢修(xiu)方(fang)便，采用靠墻(qiang)、柱(zhu)支(zhi)(zhi)架(jia)(jia)(jia)(jia)安(an)(an)(an)裝(zhuang)或屋架(jia)(jia)(jia)(jia)下弦構(gou)件上安(an)(an)(an)裝(zhuang)。靠墻(qiang)安(an)(an)(an)裝(zhuang)支(zhi)(zhi)架(jia)(jia)(jia)(jia)固(gu)定(ding)采用膨脹螺栓固(gu)定(ding)，支(zhi)(zhi)架(jia)(jia)(jia)(jia)間距不(bu)超過(guo)2米。在(zai)(zai)直線(xian)段(duan)和非(fei)直線(xian)段(duan)連接(jie)處(chu)(chu)、過(guo)建(jian)筑(zhu)物變形(xing)縫處(chu)(chu)和彎曲半徑(jing)大于300mm的(de)非(fei)直線(xian)段(duan)中(zhong)部應(ying)增設(she)支(zhi)(zhi)吊(diao)(diao)架(jia)(jia)(jia)(jia)，支(zhi)(zhi)吊(diao)(diao)架(jia)(jia)(jia)(jia)安(an)(an)(an)裝(zhuang)應(ying)保(bao)證橋(qiao)架(jia)(jia)(jia)(jia)水平(ping)度或垂直度符合(he)要求(qiu)。
3、電纜橋架
a.對于(yu)一些形狀橋架，將現(xian)(xian)場測量的尺(chi)寸交于(yu)材料供應商，由供應商依據尺(chi)寸制(zhi)作(zuo)，減少現(xian)(xian)場加(jia)工(gong)。橋架材質(zhi)、型號、厚度以及附件(jian)滿足設計(ji)要求。
b.橋架(jia)安(an)裝前，需與各專(zhuan)業協調(diao)，避免與大口徑(jing)消防管、噴(pen)淋管、冷(leng)熱水管、排水管及(ji)空調(diao)、排風(feng)設備發(fa)生矛盾。
c.將橋架(jia)舉升(sheng)到預定位(wei)置(zhi)，與(yu)支架(jia)采(cai)(cai)用(yong)螺(luo)栓固定，在(zai)(zai)轉彎(wan)處需仔細校核(he)尺(chi)寸，橋架(jia)宜與(yu)建(jian)(jian)筑物坡度一致(zhi)，在(zai)(zai)圓(yuan)(yuan)弧形建(jian)(jian)筑物墻壁的(de)橋架(jia)，其(qi)圓(yuan)(yuan)弧宜與(yu)建(jian)(jian)筑物一致(zhi)。橋架(jia)與(yu)橋架(jia)之間用(yong)連(lian)接板連(lian)接，連(lian)接螺(luo)栓采(cai)(cai)用(yong)半(ban)圓(yuan)(yuan)頭螺(luo)栓，半(ban)圓(yuan)(yuan)頭在(zai)(zai)橋架(jia)內側。橋架(jia)之間縫隙(xi)須達到設(she)計要求，確保一個系統的(de)橋架(jia)連(lian)成一體(ti)。
d.跨越建筑(zhu)物變形縫的橋架(jia)應按企業標準《鋼制(zhi)電纜橋架(jia)安(an)裝工藝》做好伸縮縫處理，鋼制(zhi)橋架(jia)直線段超(chao)過(guo)30m時，應設熱(re)脹冷(leng)縮補(bu)償裝置。
e.橋架安裝橫(heng)平豎直(zhi)(zhi)、整齊美(mei)觀、距離一(yi)致(zhi)、連(lian)接牢固，同一(yi)水平面內(nei)水平度偏(pian)差不超(chao)過5mm/m，直(zhi)(zhi)度偏(pian)差不超(chao)過5mm/m。
4、接地處理
電纜(lan)橋(qiao)(qiao)(qiao)架(jia)的(de)接(jie)(jie)(jie)(jie)(jie)地(di)處理鍍(du)鋅橋(qiao)(qiao)(qiao)架(jia)之間(jian)可利(li)用鍍(du)鋅連(lian)(lian)接(jie)(jie)(jie)(jie)(jie)板(ban)作(zuo)為跨(kua)接(jie)(jie)(jie)(jie)(jie)線(xian)(xian)(xian)，把(ba)橋(qiao)(qiao)(qiao)架(jia)連(lian)(lian)成(cheng)一(yi)體。在連(lian)(lian)接(jie)(jie)(jie)(jie)(jie)板(ban)兩(liang)端的(de)兩(liang)只連(lian)(lian)接(jie)(jie)(jie)(jie)(jie)螺栓上(shang)加鍍(du)鋅彈簧墊圈，橋(qiao)(qiao)(qiao)架(jia)之間(jian)用不小于4mm2軟銅線(xian)(xian)(xian)進行跨(kua)接(jie)(jie)(jie)(jie)(jie)，再將(jiang)橋(qiao)(qiao)(qiao)架(jia)與接(jie)(jie)(jie)(jie)(jie)地(di)線(xian)(xian)(xian)相連(lian)(lian)，形成(cheng)電氣通(tong)路。橋(qiao)(qiao)(qiao)架(jia)整體與接(jie)(jie)(jie)(jie)(jie)地(di)干線(xian)(xian)(xian)應有不少(shao)于兩(liang)處的(de)連(lian)(lian)接(jie)(jie)(jie)(jie)(jie)。
5、多(duo)層橋(qiao)(qiao)架安裝;分(fen)層橋(qiao)(qiao)架安裝
先安裝上層(ceng)，后安裝下層(ceng)，上、下層(ceng)之間距離(li)要留有余(yu)量，有利(li)于(yu)后期電(dian)纜敷設和檢修。水平相鄰橋(qiao)架凈距不(bu)宜小(xiao)于(yu)50mm，層(ceng)間距離(li)應根據(ju)橋(qiao)架寬度(du)不(bu)小(xiao)于(yu)150mm，與弱(ruo)電(dian)電(dian)纜橋(qiao)架距離(li)不(bu)小(xiao)于(yu)0.5m。
6、確定環境(jing)(jing)條件環境(jing)(jing)條件一般有三種：腐蝕環境(jing)(jing)、正常環境(jing)(jing)。
確(que)(que)定(ding)走(zou)向根(gen)據多數(shu)電(dian)(dian)(dian)(dian)(dian)纜走(zou)向，在室內可沿著(zhu)(zhu)、柱、梁、樓板走(zou)，在室外盡可能沿工藝管(guan)道走(zou)。 計算荷(he)重計算在電(dian)(dian)(dian)(dian)(dian)纜橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)走(zou)向斷面上(shang)的(de)(de)單(dan)(dan)位長度(du)(du)電(dian)(dian)(dian)(dian)(dian)纜的(de)(de)重量q及總荷(he)載(zai)G總=n1q1+n2q2……nnqn式(shi)中：q1·q2·q3……qn為(wei)每(mei)根(gen)電(dian)(dian)(dian)(dian)(dian)纜單(dan)(dan)位重量(kg／ m)n1·n2·n3……nn為(wei)相同(tong)電(dian)(dian)(dian)(dian)(dian)纜根(gen)數(shu)G總允（電(dian)(dian)(dian)(dian)(dian)纜僑(qiao)架(jia)(jia)(jia)(jia)的(de)(de)允許荷(he)載(zai)參照(zhao)荷(he)載(zai)曲(qu)線圖表）選(xuan)擇橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)根(gen)據電(dian)(dian)(dian)(dian)(dian)纜荷(he)載(zai)及橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)安裝處的(de)(de)環(huan)境，以(yi)橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)載(zai)荷(he)曲(qu)線為(wei)依據，來確(que)(que)定(ding)的(de)(de)類型和規格及立(li)柱的(de)(de)間距、托臂的(de)(de)長度(du)(du)、橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)層(ceng)(ceng)次，立(li)柱的(de)(de)長度(du)(du)等。根(gen)據電(dian)(dian)(dian)(dian)(dian)纜走(zou)向及安裝的(de)(de)環(huan)境確(que)(que)定(ding)橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)固定(ding)方式(shi)；懸掛式(shi)、直(zhi)立(li)式(shi)，(這(zhe)兩種(zhong)(zhong)形式(shi)均(jun)可采用(yong)單(dan)(dan)側(ce)(ce)固定(ding)或雙側(ce)(ce)固定(ding))、壁側(ce)(ce)式(shi)等。各(ge)種(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)纜在電(dian)(dian)(dian)(dian)(dian)纜橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)上(shang)的(de)(de)層(ceng)(ceng)次安排(pai)與層(ceng)(ceng)間距離。電(dian)(dian)(dian)(dian)(dian)纜橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)層(ceng)(ceng)次的(de)(de)排(pai)列是：弱(ruo)電(dian)(dian)(dian)(dian)(dian)控制電(dian)(dian)(dian)(dian)(dian)纜在上(shang)層(ceng)(ceng)，接著(zhu)(zhu)一般控制電(dian)(dian)(dian)(dian)(dian)纜、低壓動(dong)力(li)電(dian)(dian)(dian)(dian)(dian)纜、高壓動(dong)力(li)電(dian)(dian)(dian)(dian)(dian)纜依次在下排(pai)列，這(zhe)樣排(pai)列有利(li)于屏蔽干(gan)擾通風、散(san)熱等。
1、測量定位(wei)：
用彈線(xian)法標識橋架(jia)的安(an)裝(zhuang)(zhuang)位置(zhi)，確定(ding)(ding)好(hao)支架(jia)的固定(ding)(ding)位置(zhi)，做好(hao)標記。豎井內橋架(jia)定(ding)(ding)位應先(xian)用懸鋼絲法確定(ding)(ding)安(an)裝(zhuang)(zhuang)基準(zhun)線(xian)，如預留洞不合(he)適，應及時調整，并做好(hao)修(xiu)補。
2、電(dian)纜橋(qiao)架制(zhi)作安裝(zhuang)
我們(men)依據施(shi)工(gong)圖設(she)計標高(gao)及(ji)(ji)橋(qiao)架(jia)(jia)(jia)(jia)規格，進行(xing)定(ding)位，然后(hou)依照測量尺寸制作(zuo)支(zhi)(zhi)架(jia)(jia)(jia)(jia)，支(zhi)(zhi)架(jia)(jia)(jia)(jia)進行(xing)工(gong)廠化生(sheng)產。在(zai)(zai)無吊(diao)(diao)頂(ding)(ding)處(chu)(chu)沿梁底吊(diao)(diao)裝(zhuang)或靠墻(qiang)支(zhi)(zhi)架(jia)(jia)(jia)(jia)安(an)(an)(an)裝(zhuang)，在(zai)(zai)有吊(diao)(diao)頂(ding)(ding)處(chu)(chu)在(zai)(zai)吊(diao)(diao)頂(ding)(ding)內(nei)吊(diao)(diao)裝(zhuang)或靠墻(qiang)支(zhi)(zhi)架(jia)(jia)(jia)(jia)安(an)(an)(an)裝(zhuang)。在(zai)(zai)無吊(diao)(diao)頂(ding)(ding)的(de)公共(gong)場所(suo)結合(he)結構(gou)構(gou)件并考慮建(jian)筑(zhu)美觀(guan)及(ji)(ji)檢修(xiu)方(fang)便，采用靠墻(qiang)、柱(zhu)支(zhi)(zhi)架(jia)(jia)(jia)(jia)安(an)(an)(an)裝(zhuang)或屋架(jia)(jia)(jia)(jia)下弦構(gou)件上安(an)(an)(an)裝(zhuang)。靠墻(qiang)安(an)(an)(an)裝(zhuang)支(zhi)(zhi)架(jia)(jia)(jia)(jia)固(gu)定(ding)采用膨脹螺栓固(gu)定(ding)，支(zhi)(zhi)架(jia)(jia)(jia)(jia)間距不(bu)超過(guo)2米。在(zai)(zai)直線(xian)段(duan)和非(fei)直線(xian)段(duan)連接(jie)處(chu)(chu)、過(guo)建(jian)筑(zhu)物變形(xing)縫處(chu)(chu)和彎曲半徑(jing)大于300mm的(de)非(fei)直線(xian)段(duan)中(zhong)部應(ying)增設(she)支(zhi)(zhi)吊(diao)(diao)架(jia)(jia)(jia)(jia)，支(zhi)(zhi)吊(diao)(diao)架(jia)(jia)(jia)(jia)安(an)(an)(an)裝(zhuang)應(ying)保(bao)證橋(qiao)架(jia)(jia)(jia)(jia)水平(ping)度或垂直度符合(he)要求(qiu)。
3、電纜橋架
a.對于(yu)一些形狀橋架，將現(xian)(xian)場測量的尺(chi)寸交于(yu)材料供應商，由供應商依據尺(chi)寸制(zhi)作(zuo)，減少現(xian)(xian)場加(jia)工(gong)。橋架材質(zhi)、型號、厚度以及附件(jian)滿足設計(ji)要求。
b.橋架(jia)安(an)裝前，需與各專(zhuan)業協調(diao)，避免與大口徑(jing)消防管、噴(pen)淋管、冷(leng)熱水管、排水管及(ji)空調(diao)、排風(feng)設備發(fa)生矛盾。
c.將橋架(jia)舉升(sheng)到預定位(wei)置(zhi)，與(yu)支架(jia)采(cai)(cai)用(yong)螺(luo)栓固定，在(zai)(zai)轉彎(wan)處需仔細校核(he)尺(chi)寸，橋架(jia)宜與(yu)建(jian)(jian)筑物坡度一致(zhi)，在(zai)(zai)圓(yuan)(yuan)弧形建(jian)(jian)筑物墻壁的(de)橋架(jia)，其(qi)圓(yuan)(yuan)弧宜與(yu)建(jian)(jian)筑物一致(zhi)。橋架(jia)與(yu)橋架(jia)之間用(yong)連(lian)接板連(lian)接，連(lian)接螺(luo)栓采(cai)(cai)用(yong)半(ban)圓(yuan)(yuan)頭螺(luo)栓，半(ban)圓(yuan)(yuan)頭在(zai)(zai)橋架(jia)內側。橋架(jia)之間縫隙(xi)須達到設(she)計要求，確保一個系統的(de)橋架(jia)連(lian)成一體(ti)。
d.跨越建筑(zhu)物變形縫的橋架(jia)應按企業標準《鋼制(zhi)電纜橋架(jia)安(an)裝工藝》做好伸縮縫處理，鋼制(zhi)橋架(jia)直線段超(chao)過(guo)30m時，應設熱(re)脹冷(leng)縮補(bu)償裝置。
e.橋架安裝橫(heng)平豎直(zhi)(zhi)、整齊美(mei)觀、距離一(yi)致(zhi)、連(lian)接牢固，同一(yi)水平面內(nei)水平度偏(pian)差不超(chao)過5mm/m，直(zhi)(zhi)度偏(pian)差不超(chao)過5mm/m。
4、接地處理
電纜(lan)橋(qiao)(qiao)(qiao)架(jia)的(de)接(jie)(jie)(jie)(jie)(jie)地(di)處理鍍(du)鋅橋(qiao)(qiao)(qiao)架(jia)之間(jian)可利(li)用鍍(du)鋅連(lian)(lian)接(jie)(jie)(jie)(jie)(jie)板(ban)作(zuo)為跨(kua)接(jie)(jie)(jie)(jie)(jie)線(xian)(xian)(xian)，把(ba)橋(qiao)(qiao)(qiao)架(jia)連(lian)(lian)成(cheng)一(yi)體。在連(lian)(lian)接(jie)(jie)(jie)(jie)(jie)板(ban)兩(liang)端的(de)兩(liang)只連(lian)(lian)接(jie)(jie)(jie)(jie)(jie)螺栓上(shang)加鍍(du)鋅彈簧墊圈，橋(qiao)(qiao)(qiao)架(jia)之間(jian)用不小于4mm2軟銅線(xian)(xian)(xian)進行跨(kua)接(jie)(jie)(jie)(jie)(jie)，再將(jiang)橋(qiao)(qiao)(qiao)架(jia)與接(jie)(jie)(jie)(jie)(jie)地(di)線(xian)(xian)(xian)相連(lian)(lian)，形成(cheng)電氣通(tong)路。橋(qiao)(qiao)(qiao)架(jia)整體與接(jie)(jie)(jie)(jie)(jie)地(di)干線(xian)(xian)(xian)應有不少(shao)于兩(liang)處的(de)連(lian)(lian)接(jie)(jie)(jie)(jie)(jie)。
5、多(duo)層橋(qiao)(qiao)架安裝;分(fen)層橋(qiao)(qiao)架安裝
先安裝上層(ceng)，后安裝下層(ceng)，上、下層(ceng)之間距離(li)要留有余(yu)量，有利(li)于(yu)后期電(dian)纜敷設和檢修。水平相鄰橋(qiao)架凈距不(bu)宜小(xiao)于(yu)50mm，層(ceng)間距離(li)應根據(ju)橋(qiao)架寬度(du)不(bu)小(xiao)于(yu)150mm，與弱(ruo)電(dian)電(dian)纜橋(qiao)架距離(li)不(bu)小(xiao)于(yu)0.5m。
6、確定環境(jing)(jing)條件環境(jing)(jing)條件一般有三種：腐蝕環境(jing)(jing)、正常環境(jing)(jing)。
確(que)(que)定(ding)走(zou)向根(gen)據多數(shu)電(dian)(dian)(dian)(dian)(dian)纜走(zou)向，在室內可沿著(zhu)(zhu)、柱、梁、樓板走(zou)，在室外盡可能沿工藝管(guan)道走(zou)。 計算荷(he)重計算在電(dian)(dian)(dian)(dian)(dian)纜橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)走(zou)向斷面上(shang)的(de)(de)單(dan)(dan)位長度(du)(du)電(dian)(dian)(dian)(dian)(dian)纜的(de)(de)重量q及總荷(he)載(zai)G總=n1q1+n2q2……nnqn式(shi)中：q1·q2·q3……qn為(wei)每(mei)根(gen)電(dian)(dian)(dian)(dian)(dian)纜單(dan)(dan)位重量(kg／ m)n1·n2·n3……nn為(wei)相同(tong)電(dian)(dian)(dian)(dian)(dian)纜根(gen)數(shu)G總允（電(dian)(dian)(dian)(dian)(dian)纜僑(qiao)架(jia)(jia)(jia)(jia)的(de)(de)允許荷(he)載(zai)參照(zhao)荷(he)載(zai)曲(qu)線圖表）選(xuan)擇橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)根(gen)據電(dian)(dian)(dian)(dian)(dian)纜荷(he)載(zai)及橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)安裝處的(de)(de)環(huan)境，以(yi)橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)載(zai)荷(he)曲(qu)線為(wei)依據，來確(que)(que)定(ding)的(de)(de)類型和規格及立(li)柱的(de)(de)間距、托臂的(de)(de)長度(du)(du)、橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)層(ceng)(ceng)次，立(li)柱的(de)(de)長度(du)(du)等。根(gen)據電(dian)(dian)(dian)(dian)(dian)纜走(zou)向及安裝的(de)(de)環(huan)境確(que)(que)定(ding)橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)的(de)(de)固定(ding)方式(shi)；懸掛式(shi)、直(zhi)立(li)式(shi)，(這(zhe)兩種(zhong)(zhong)形式(shi)均(jun)可采用(yong)單(dan)(dan)側(ce)(ce)固定(ding)或雙側(ce)(ce)固定(ding))、壁側(ce)(ce)式(shi)等。各(ge)種(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)纜在電(dian)(dian)(dian)(dian)(dian)纜橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)上(shang)的(de)(de)層(ceng)(ceng)次安排(pai)與層(ceng)(ceng)間距離。電(dian)(dian)(dian)(dian)(dian)纜橋(qiao)(qiao)(qiao)架(jia)(jia)(jia)(jia)層(ceng)(ceng)次的(de)(de)排(pai)列是：弱(ruo)電(dian)(dian)(dian)(dian)(dian)控制電(dian)(dian)(dian)(dian)(dian)纜在上(shang)層(ceng)(ceng)，接著(zhu)(zhu)一般控制電(dian)(dian)(dian)(dian)(dian)纜、低壓動(dong)力(li)電(dian)(dian)(dian)(dian)(dian)纜、高壓動(dong)力(li)電(dian)(dian)(dian)(dian)(dian)纜依次在下排(pai)列，這(zhe)樣排(pai)列有利(li)于屏蔽干(gan)擾通風、散(san)熱等。
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