鋼波紋涵管管壁內外防(fang)滲處理:管壁內外涂(tu)乳化瀝青或熱瀝青兩道,從外觀看守(shou)壁內外平均的(de)涂(tu)成了黑管即可。一(yi)般瀝青涂(tu)層的(de)厚度要達(da)到1mm。
如何提高鋼波紋涵管安裝的定位準確度?
鑲石(shi)棉墊(dian):因為現場地勢等原因,有時相鄰(lin)兩(liang)(liang)法(fa)(fa)(fa)蘭之(zhi)間間距(ju)較(jiao)小(xiao),這時用手(shou)錘、鑿子(zi)把兩(liang)(liang)法(fa)(fa)(fa)蘭之(zhi)間鑿開大約1cm的縫隙(xi),用螺絲(si)刀把石(shi)棉墊(dian)鑲在兩(liang)(liang)法(fa)(fa)(fa)蘭之(zhi)間,有時管子(zi)頂(ding)部兩(liang)(liang)法(fa)(fa)(fa)蘭間距(ju)較(jiao)大,石(shi)棉墊(dian)鑲嵌難題,用綁絲(si)把石(shi)棉墊(dian)綁在螺栓上(shang)固定,然(ran)后工人(ren)開始對稱(cheng)鎖(suo)緊螺絲(si)。直(zhi)至(zhi)從(cong)外觀看兩(liang)(liang)法(fa)(fa)(fa)蘭之(zhi)間只有2—3mm的縫隙(xi)即可(ke)。
連(lian)(lian)接(jie)安裝(zhuang)波紋管(guan)(guan)(guan)(guan):根(gen)據(ju)涵洞(dong)實際情況,排放(fang)涵管(guan)(guan)(guan)(guan)。假如涵洞(dong)兩側進出(chu)(chu)水(shui)口(kou)(kou)是與路基同坡(po)度(du)的(de)斜口(kou)(kou)形式(shi),安裝(zhuang)時(shi)先(xian)安裝(zhuang)中(zhong)(zhong)間(jian)(jian)(jian)管(guan)(guan)(guan)(guan)節(jie),在(zai)基礎(chu)長度(du)方(fang)(fang)向(xiang)(xiang)留出(chu)(chu)進出(chu)(chu)水(shui)口(kou)(kou)的(de)位置。中(zhong)(zhong)間(jian)(jian)(jian)管(guan)(guan)(guan)(guan)節(jie)全(quan)部(bu)安裝(zhuang)完畢,校正就位后(hou)(hou)再(zai)安裝(zhuang)兩側進出(chu)(chu)水(shui)口(kou)(kou)。安裝(zhuang)時(shi)從一側排放(fang)根(gen)管(guan)(guan)(guan)(guan)節(jie),使(shi)(shi)(shi)其管(guan)(guan)(guan)(guan)子中(zhong)(zhong)央(yang)和基礎(chu)縱向(xiang)(xiang)中(zhong)(zhong)央(yang)線平行,同樣把(ba)第二根(gen)管(guan)(guan)(guan)(guan)放(fang)置就位,當兩根(gen)管(guan)(guan)(guan)(guan)相鄰法(fa)蘭間(jian)(jian)(jian)相距3—5cm的(de)縫隙時(shi),用小撬(qiao)棍對準法(fa)蘭上的(de)螺栓孔(kong),使(shi)(shi)(shi)其兩根(gen)管(guan)(guan)(guan)(guan)法(fa)蘭上的(de)螺栓孔(kong)對正,這時(shi)從第二節(jie)管(guan)(guan)(guan)(guan)的(de)另(ling)一端用撬(qiao)杠撬(qiao)動管(guan)(guan)(guan)(guan)節(jie),使(shi)(shi)(shi)其縱向(xiang)(xiang)平移,使(shi)(shi)(shi)兩法(fa)蘭間(jian)(jian)(jian)距在(zai)2cm左右,然后(hou)(hou)全(quan)部(bu)穿(chuan)上螺栓,擰上螺絲,帶平扣即可。此后(hou)(hou)依此方(fang)(fang)式(shi)逐節(jie)依次(ci)連(lian)(lian)接(jie),每道涵洞(dong)中(zhong)(zhong)間(jian)(jian)(jian)管(guan)(guan)(guan)(guan)節(jie)無(wu)先(xian)后(hou)(hou)次(ci)序,可以隨意連(lian)(lian)接(jie)。
考慮到頂板波(bo)紋(wen)管涵數(shu)目在逐步削(xue)減,但凡與(yu)波(bo)紋(wen)管涵抵觸的部件都要躲避波(bo)紋(wen)管。澆(jiao)筑砼時(shi),禁止(zhi)對(dui)著波(bo)紋(wen)管涵放料。振(zhen)搗(dao)(dao)棒(bang)禁止(zhi)與(yu)波(bo)紋(wen)管碰撞,禁止(zhi)兩個(ge)振(zhen)搗(dao)(dao)棒(bang)夾(jia)著一根波(bo)紋(wen)管涵振(zhen)搗(dao)(dao)。特別是腹板振(zhen)搗(dao)(dao)時(shi),禁止(zhi)振(zhen)搗(dao)(dao)棒(bang)在統(tong)一方位長期(qi)振(zhen)搗(dao)(dao),振(zhen)搗(dao)(dao)時(shi)刻以不超(chao)越(yue)20秒為準。拆模時(shi) 注意維護端頭處(chu)外(wai)漏的波(bo)紋(wen)管涵。
鋼波紋涵管方位定位要,尤(you)其是(shi)接近接頭(tou)的部位,波紋管(guan)涵定位鋼筋間隔為0.5米,不(bu)得缺少。焊接鋼筋接近波紋管(guan)涵時(shi),要采納辦法維(wei)護(hu)波紋管(guan)不(bu)得被灼(zhuo)傷(shang),如不(bu)當心灼(zhuo)傷(shang),灼(zhuo)傷(shang)處要用(yong)膠(jiao)帶包裹(guo)緊密(mi)。
波(bo)紋管(guan)(guan)涵(han)接頭(tou)的辦法:波(bo)紋管(guan)(guan)涵(han)接頭(tou)處(chu)要(yao)(yao)外包(bao)0.3米長的大號(hao)波(bo)紋管(guan)(guan),而且兩端頭(tou)要(yao)(yao)對半(ban)擰緊(jin),中央不得(de)留有曠地(di)(di)。為確保(bao)中央不留曠地(di)(di),應在兩接頭(tou)端頭(tou)處(chu)做好符號(hao)。做好后(hou)要(yao)(yao)用膠帶包(bao)裹緊(jin)密,以防漏漿(jiang)。
嚴肅控(kong)制出(chu)場波紋(wen)(wen)管涵的原料質量。進到現場的波紋(wen)(wen)管要會(hui)集堆放(fang)規整,工人不得在波紋(wen)(wen)管上踩踏。波紋(wen)(wen)管涵要掩蓋(gai)維護,避(bi)免風(feng)吹雨淋使其提早(zao)老化。切開波紋(wen)(wen)管涵要平直,禁止切成斜口(kou)。
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