一、 目前常用的天溝材質及適用范圍

1、材質：

目前常用的天(tian)(tian)溝材質(zhi)有三種：板(ban)厚(hou)3~6mm鋼(gang)板(ban)天(tian)(tian)溝、板(ban)厚(hou)0.8~1.2mm不(bu)銹鋼(gang)天(tian)(tian)溝、板(ban)厚(hou)0.6mm彩(cai)鋼(gang)板(ban)天(tian)(tian)溝。

2、適用范圍：

鋼板天(tian)溝和不銹(xiu)鋼天(tian)溝可適(shi)用(yong)于絕(jue)大部份工(gong)程，其中不銹(xiu)鋼天(tian)溝在沿海區(qu)域及工(gong)程附近有較強腐蝕性氣體的場(chang)所(suo)較為常(chang)用(yong)；彩板天(tian)溝主要用(yong)于汽(qi)樓(lou)外(wai)掛(gua)天(tian)溝和工(gong)程面(mian)積(ji)較小、排水量不大的工(gong)程，常(chang)作為外(wai)掛(gua)天(tian)溝使用(yong)。

二、 天溝連接方法：

★ 鋼板天溝

1、安裝條件：

鋼板天溝安裝(zhuang)(zhuang)前必須具備如下條件(jian)：鋼結構主體（指梁、柱(zhu)）已(yi)安裝(zhuang)(zhuang)調(diao)整完畢(bi)，所有高強螺(luo)栓已(yi)全(quan)部終擰完畢(bi)。有女兒墻(qiang)的(de)工(gong)程，女兒墻(qiang)柱(zhu)和相應的(de)墻(qiang)梁已(yi)安裝(zhuang)(zhuang)調(diao)整結束(shu)。鋼板天溝已(yi)進(jin)行(xing)場。焊接(jie)用的(de)電焊機和焊工(gong)已(yi)到位。

2、安裝：

按設(she)計(ji)圖紙將(jiang)(jiang)(jiang)相應的(de)(de)鋼天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)倒運到(dao)位(wei)后(hou)(hou)，按天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)的(de)(de)大(da)小和(he)重量(liang)，采用(yong)(yong)吊(diao)機吊(diao)運或人(ren)工(gong)上(shang)運，將(jiang)(jiang)(jiang)天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)運到(dao)指(zhi)定(ding)的(de)(de)安(an)裝(zhuang)區域，并即時用(yong)(yong)電(dian)(dian)(dian)焊(han)(han)將(jiang)(jiang)(jiang)天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)臨(lin)時連(lian)(lian)接(jie)。待一條天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)材料(liao)全部到(dao)位(wei)后(hou)(hou)，沿天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)外側用(yong)(yong)鋼絲(si)拉一條通(tong)線，把(ba)整條天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)內外二條邊全部調整到(dao)同(tong)一直線上(shang)，調整時注(zhu)意使天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)拼接(jie)處(chu)的(de)(de)縫(feng)(feng)隙使之(zhi)最小，并用(yong)(yong)電(dian)(dian)(dian)焊(han)(han)進(jin)行臨(lin)時固(gu)定(ding)，隨(sui)后(hou)(hou)用(yong)(yong)直徑3.2mm的(de)(de)焊(han)(han)條將(jiang)(jiang)(jiang)底(di)下水(shui)平(ping)焊(han)(han)縫(feng)(feng)和(he)兩側邊的(de)(de)直焊(han)(han)縫(feng)(feng)進(jin)行滿焊(han)(han)，焊(han)(han)接(jie)時須注(zhu)意焊(han)(han)接(jie)質量(liang)及控(kong)制焊(han)(han)接(jie)電(dian)(dian)(dian)流，防止將(jiang)(jiang)(jiang)天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)燒穿(chuan)而增(zeng)加不必(bi)要的(de)(de)麻煩(fan)。天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)底(di)面與柱(zhu)頂(ding)連(lian)(lian)接(jie)處(chu)可(ke)用(yong)(yong)斷續焊(han)(han)，將(jiang)(jiang)(jiang)天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)底(di)部與鋼柱(zhu)柱(zhu)頂(ding)板進(jin)行焊(han)(han)接(jie)固(gu)定(ding)，以(yi)增(zeng)加整體的(de)(de)牢固(gu)，當(dang)天(tian)(tian)(tian)(tian)不能焊(han)(han)完的(de)(de)天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)，可(ke)用(yong)(yong)電(dian)(dian)(dian)焊(han)(han)用(yong)(yong)上(shang)述(shu)方法進(jin)行臨(lin)時固(gu)定(ding)，如(ru)條件許(xu)可(ke)，也可(ke)將(jiang)(jiang)(jiang)天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)用(yong)(yong)鋼絲(si)繩同(tong)墻梁或天(tian)(tian)(tian)(tian)溝(gou)(gou)(gou)托架進(jin)行綁扎固(gu)定(ding)。

3、落水口開孔：

天溝(gou)(gou)落(luo)水(shui)(shui)(shui)(shui)(shui)口(kou)位(wei)置(zhi)按設(she)計(ji)要(yao)求進行(xing)(xing)(xing)定(ding)(ding)位(wei)，一(yi)般(ban)常規落(luo)水(shui)(shui)(shui)(shui)(shui)口(kou)均開(kai)(kai)在(zai)鋼(gang)(gang)柱或(huo)鋼(gang)(gang)梁側邊(bian)(bian)。開(kai)(kai)孔(kong)時(shi)要(yao)注意支(zhi)撐的(de)(de)(de)(de)位(wei)置(zhi)，盡量將(jiang)其避開(kai)(kai)，以(yi)減(jian)少落(luo)水(shui)(shui)(shui)(shui)(shui)管(guan)的(de)(de)(de)(de)配件量。開(kai)(kai)孔(kong)的(de)(de)(de)(de)同(tong)時(shi)要(yao)考慮落(luo)水(shui)(shui)(shui)(shui)(shui)管(guan)的(de)(de)(de)(de)安裝方(fang)法，最好(hao)在(zai)先確(que)定(ding)(ding)落(luo)水(shui)(shui)(shui)(shui)(shui)管(guan)管(guan)箍的(de)(de)(de)(de)固定(ding)(ding)方(fang)法后(hou)(hou)再行(xing)(xing)(xing)進行(xing)(xing)(xing)，以(yi)縮短固定(ding)(ding)管(guan)箍的(de)(de)(de)(de)材料，降低(di)成本。開(kai)(kai)孔(kong)可(ke)(ke)用(yong)(yong)氣割(ge)進行(xing)(xing)(xing)，也可(ke)(ke)用(yong)(yong)角(jiao)(jiao)磨(mo)機(ji)開(kai)(kai)孔(kong)，嚴禁用(yong)(yong)電(dian)焊(han)(han)(han)(han)直(zhi)接(jie)(jie)(jie)開(kai)(kai)孔(kong)。孔(kong)開(kai)(kai)完后(hou)(hou)，用(yong)(yong)角(jiao)(jiao)磨(mo)機(ji)將(jiang)孔(kong)轅、周邊(bian)(bian)進行(xing)(xing)(xing)修(xiu)整，隨后(hou)(hou)將(jiang)鋼(gang)(gang)管(guan)落(luo)水(shui)(shui)(shui)(shui)(shui)口(kou)同(tong)天溝(gou)(gou)進行(xing)(xing)(xing)焊(han)(han)(han)(han)接(jie)(jie)(jie)，焊(han)(han)(han)(han)接(jie)(jie)(jie)時(shi)注意焊(han)(han)(han)(han)接(jie)(jie)(jie)質(zhi)量，嚴防漏焊(han)(han)(han)(han)的(de)(de)(de)(de)現象(xiang)發(fa)生(sheng)。焊(han)(han)(han)(han)接(jie)(jie)(jie)完后(hou)(hou)及(ji)時(shi)將(jiang)焊(han)(han)(han)(han)渣(zha)清理(li)干凈，對(dui)明顯高出天溝(gou)(gou)的(de)(de)(de)(de)焊(han)(han)(han)(han)接(jie)(jie)(jie)金屬用(yong)(yong)角(jiao)(jiao)磨(mo)機(ji)打磨(mo)直(zhi)至(zhi)基本平整，為防在(zai)落(luo)水(shui)(shui)(shui)(shui)(shui)口(kou)處產(chan)生(sheng)積水(shui)(shui)(shui)(shui)(shui)現象(xiang)的(de)(de)(de)(de)發(fa)生(sheng)，可(ke)(ke)用(yong)(yong)大錘(chui)將(jiang)落(luo)水(shui)(shui)(shui)(shui)(shui)口(kou)砸下一(yi)點(dian)，發(fa)利于(yu)排水(shui)(shui)(shui)(shui)(shui)。

4、油漆：

天(tian)溝(gou)全(quan)部焊(han)接(jie)(jie)結束(shu)并檢查合格(ge)后(hou)，將焊(han)接(jie)(jie)處(chu)的(de)(de)焊(han)渣再次(ci)全(quan)面清(qing)(qing)理(li)，同時用鐵(tie)刷(shua)將焊(han)接(jie)(jie)區域的(de)(de)油(you)漆(qi)清(qing)(qing)理(li)完，隨后(hou)用同原油(you)漆(qi)同規格(ge)的(de)(de)防(fang)銹漆(qi)進行(xing)(xing)(xing)修補(bu)。天(tian)溝(gou)面漆(qi)按設計(ji)要求(qiu)，在(zai)屋面板施(shi)工前進行(xing)(xing)(xing)涂刷(shua)。如(ru)設計(ji)無要求(qiu)時，在(zai)鋼(gang)板天(tian)溝(gou)內側應另(ling)外涂刷(shua)一道氯丁膠進行(xing)(xing)(xing)防(fang)腐處(chu)理(li)。

★ 不銹鋼天溝安裝

1、不(bu)銹(xiu)鋼天溝的安裝條件和落水(shui)管(guan)開孔要求均同鋼板天溝。

2、不銹鋼天(tian)溝(gou)(gou)焊(han)接(jie)(jie)采(cai)用(yong)(yong)氬弧焊(han)，焊(han)條(tiao)采(cai)用(yong)(yong)同(tong)天(tian)溝(gou)(gou)相同(tong)材質的不銹鋼絲(si)，直徑可(ke)同(tong)板厚。常用(yong)(yong)為1mm。在正式焊(han)接(jie)(jie)前(qian)，應(ying)組織焊(han)工進(jin)行(xing)試焊(han)，合格后(hou)方可(ke)開始批量性焊(han)接(jie)(jie)，同(tong)時焊(han)接(jie)(jie)最好指定專人(ren)進(jin)行(xing)，同(tong)時安(an)排一個(ge)輔助工配合作業，以提高主產效益。落水(shui)口焊(han)接(jie)(jie)完后(hou)，該區域也(ye)應(ying)適當砸下部(bu)份(fen)，以利排水(shui)。不銹鋼焊(han)條(tiao)如有泥沙等污染必(bi)須清(qing)除干(gan)凈后(hou)方可(ke)使用(yong)(yong)。

3、由于不(bu)銹鋼(gang)天(tian)溝(gou)采用折邊(bian)(bian)加工(gong)成型，因此不(bu)可(ke)避免(mian)的存在尺(chi)寸偏差的現(xian)象(xiang)，因此天(tian)溝(gou)在上運前(qian)，應對其進(jin)(jin)行(xing)(xing)全(quan)(quan)面檢查，盡(jin)量將連接(jie)處的縫(feng)隙調整(zheng)到最(zui)小，在焊(han)接(jie)前(qian)先用點焊(han)進(jin)(jin)行(xing)(xing)點焊(han)固定(ding)，隨(sui)后進(jin)(jin)行(xing)(xing)焊(han)接(jie)，焊(han)接(jie)按(an)先天(tian)溝(gou)底部，然后焊(han)接(jie)天(tian)溝(gou)側邊(bian)(bian)。如有條件(jian)，可(ke)進(jin)(jin)行(xing)(xing)試排，按(an)試排的情況進(jin)(jin)行(xing)(xing)編號后吊裝，以最(zui)大限度(du)的減(jian)小焊(han)接(jie)工(gong)作(zuo)量，保(bao)證工(gong)程(cheng)質量。對縫(feng)隙太(tai)大無(wu)法(fa)用焊(han)絲全(quan)(quan)部焊(han)滿的，可(ke)用邊(bian)(bian)角料進(jin)(jin)行(xing)(xing)拼接(jie)，拼接(jie)處需注(zhu)意必需四周圍焊(han)，同時保(bao)證邊(bian)(bian)角的焊(han)縫(feng)飽滿無(wu)漏(lou)焊(han)。

★ 彩板天溝安裝

1、采板(ban)天溝安裝可(ke)在屋面(mian)板(ban)安裝結束后進行，也可(ke)與屋面(mian)板(ban)同時安裝，具體可(ke)根據現場情 況靈活(huo)確定。

2、彩板(ban)(ban)天(tian)溝固定分為(wei)兩部(bu)份(fen)：一(yi)部(bu)份(fen)是天(tian)溝內(nei)側(ce)(ce)(ce)板(ban)(ban)與(yu)屋面(mian)板(ban)(ban)用(yong)自攻釘(ding)連接(jie)(jie)(jie)或用(yong)拉鉚(liu)釘(ding)鉚(liu)接(jie)(jie)(jie)，另一(yi)部(bu)份(fen)是天(tian)溝外側(ce)(ce)(ce)板(ban)(ban)折(zhe)邊處(chu)先用(yong)天(tian)溝拉條鉚(liu)釘(ding)連接(jie)(jie)(jie)，拉條另一(yi)側(ce)(ce)(ce)同屋面(mian)板(ban)(ban)波峰處(chu)用(yong)固定屋面(mian)板(ban)(ban)的自攻釘(ding)一(yi)同與(yu)板(ban)(ban)和檁條連接(jie)(jie)(jie)，天(tian)溝與(yu)天(tian)溝連接(jie)(jie)(jie)處(chu)，按公司標準(zhun)圖集的要(yao)求(qiu)，分二排按間距50mm用(yong)鉚(liu)釘(ding)鉚(liu)接(jie)(jie)(jie)，板(ban)(ban)與(yu)板(ban)(ban)搭(da)接(jie)(jie)(jie)處(chu)用(yong)中性密封(feng)進行密封(feng)，搭(da)接(jie)(jie)(jie)時應注意搭(da)接(jie)(jie)(jie)面(mian)的清理，打膠后需靜(jing)置一(yi)斷時間，待(dai)膠固化(hua)后主可移動。

3、天溝(gou)落水口開孔可直(zhi)接用切割(ge)機進行，位置按(an)設計要(yao)求(qiu)(qiu),落水口與天溝(gou)底用拉(la)鉚釘按(an)標準(zhun)圖集(ji)相關節點的(de)要(yao)求(qiu)(qiu)進行固(gu)定,連(lian)接處(chu)密封膠的(de)處(chu)理要(yao)求(qiu)(qiu)同天溝(gou)連(lian)接。

4、彩板(ban)天溝的(de)(de)平面度要(yao)(yao)求同鋼板(ban)天溝，由于其(qi)主(zhu)要(yao)(yao)由主(zhu)體結(jie)構(gou)的(de)(de)安裝質(zhi)量所決定，因此(ci)，天溝安裝前，其(qi)主(zhu)體結(jie)構(gou)的(de)(de)施(shi)工質(zhi)量必須(xu)得到(dao)切實的(de)(de)保障，才能為天溝的(de)(de)安裝質(zhi)量的(de)(de)提高打好一個良好的(de)(de)基(ji)礎。