鋼波紋涵管管(guan)(guan)壁內外(wai)(wai)防滲處理:管(guan)(guan)壁內外(wai)(wai)涂乳化瀝青(qing)或熱瀝青(qing)兩道,從外(wai)(wai)觀看守(shou)壁內外(wai)(wai)平均的涂成了黑管(guan)(guan)即可。一(yi)般瀝青(qing)涂層的厚度要達到1mm。
如何提高鋼波紋涵管安裝的定位準確度?
鑲石棉墊(dian):因為現場地勢等原因,有時(shi)(shi)相鄰兩(liang)(liang)法蘭(lan)之間(jian)間(jian)距(ju)較小,這時(shi)(shi)用(yong)手錘、鑿子把兩(liang)(liang)法蘭(lan)之間(jian)鑿開(kai)大(da)約1cm的縫(feng)隙(xi),用(yong)螺絲(si)(si)刀把石棉墊(dian)鑲在兩(liang)(liang)法蘭(lan)之間(jian),有時(shi)(shi)管(guan)子頂(ding)部(bu)兩(liang)(liang)法蘭(lan)間(jian)距(ju)較大(da),石棉墊(dian)鑲嵌難題,用(yong)綁(bang)絲(si)(si)把石棉墊(dian)綁(bang)在螺栓上固定,然后工人開(kai)始對稱(cheng)鎖緊螺絲(si)(si)。直至從外觀看(kan)兩(liang)(liang)法蘭(lan)之間(jian)只有2—3mm的縫(feng)隙(xi)即可。
連接(jie)安裝波紋管(guan)(guan)(guan)(guan)(guan)(guan):根(gen)據涵洞實際情況,排放(fang)(fang)涵管(guan)(guan)(guan)(guan)(guan)(guan)。假(jia)如涵洞兩(liang)(liang)(liang)側進出(chu)水(shui)(shui)口是與(yu)路基同(tong)坡度(du)的(de)(de)斜口形式(shi),安裝時先(xian)安裝中(zhong)間(jian)管(guan)(guan)(guan)(guan)(guan)(guan)節,在基礎長度(du)方向留出(chu)進出(chu)水(shui)(shui)口的(de)(de)位(wei)置(zhi)。中(zhong)間(jian)管(guan)(guan)(guan)(guan)(guan)(guan)節全(quan)部(bu)安裝完畢(bi),校(xiao)正(zheng)就(jiu)位(wei)后(hou)再安裝兩(liang)(liang)(liang)側進出(chu)水(shui)(shui)口。安裝時從一側排放(fang)(fang)根(gen)管(guan)(guan)(guan)(guan)(guan)(guan)節,使(shi)其(qi)管(guan)(guan)(guan)(guan)(guan)(guan)子中(zhong)央和基礎縱向中(zhong)央線(xian)平(ping)行(xing),同(tong)樣把第二根(gen)管(guan)(guan)(guan)(guan)(guan)(guan)放(fang)(fang)置(zhi)就(jiu)位(wei),當兩(liang)(liang)(liang)根(gen)管(guan)(guan)(guan)(guan)(guan)(guan)相(xiang)鄰法(fa)蘭間(jian)相(xiang)距(ju)3—5cm的(de)(de)縫隙時,用小撬棍對準法(fa)蘭上的(de)(de)螺栓(shuan)孔,使(shi)其(qi)兩(liang)(liang)(liang)根(gen)管(guan)(guan)(guan)(guan)(guan)(guan)法(fa)蘭上的(de)(de)螺栓(shuan)孔對正(zheng),這(zhe)時從第二節管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)另一端(duan)用撬杠撬動(dong)管(guan)(guan)(guan)(guan)(guan)(guan)節,使(shi)其(qi)縱向平(ping)移,使(shi)兩(liang)(liang)(liang)法(fa)蘭間(jian)距(ju)在2cm左右,然后(hou)全(quan)部(bu)穿(chuan)上螺栓(shuan),擰上螺絲,帶平(ping)扣即可(ke)。此后(hou)依此方式(shi)逐節依次連接(jie),每道涵洞中(zhong)間(jian)管(guan)(guan)(guan)(guan)(guan)(guan)節無先(xian)后(hou)次序,可(ke)以隨(sui)意連接(jie)。
考慮到頂板(ban)波紋(wen)管(guan)(guan)涵數(shu)目在逐步削減,但凡與波紋(wen)管(guan)(guan)涵抵(di)觸的部(bu)件都要(yao)躲避(bi)波紋(wen)管(guan)(guan)。澆筑砼時(shi),禁(jin)(jin)止對著波紋(wen)管(guan)(guan)涵放料(liao)。振(zhen)(zhen)搗(dao)(dao)棒(bang)(bang)禁(jin)(jin)止與波紋(wen)管(guan)(guan)碰撞,禁(jin)(jin)止兩個振(zhen)(zhen)搗(dao)(dao)棒(bang)(bang)夾著一根波紋(wen)管(guan)(guan)涵振(zhen)(zhen)搗(dao)(dao)。特別(bie)是腹板(ban)振(zhen)(zhen)搗(dao)(dao)時(shi),禁(jin)(jin)止振(zhen)(zhen)搗(dao)(dao)棒(bang)(bang)在統一方(fang)位長期振(zhen)(zhen)搗(dao)(dao),振(zhen)(zhen)搗(dao)(dao)時(shi)刻以不(bu)超越20秒為準。拆模時(shi) 注意維護端頭(tou)處(chu)外漏的波紋(wen)管(guan)(guan)涵。
鋼波紋涵管方位定位要(yao)(yao),尤其(qi)是接(jie)近(jin)接(jie)頭的部(bu)位,波(bo)紋管涵(han)定位鋼(gang)筋間(jian)隔為0.5米(mi),不(bu)得缺(que)少(shao)。焊接(jie)鋼(gang)筋接(jie)近(jin)波(bo)紋管涵(han)時,要(yao)(yao)采納(na)辦(ban)法(fa)維護波(bo)紋管不(bu)得被灼(zhuo)(zhuo)傷(shang),如不(bu)當(dang)心灼(zhuo)(zhuo)傷(shang),灼(zhuo)(zhuo)傷(shang)處要(yao)(yao)用膠帶包(bao)裹緊密。
波紋管涵接(jie)(jie)頭(tou)的辦法:波紋管涵接(jie)(jie)頭(tou)處(chu)要外包(bao)0.3米長的大號波紋管,而且兩端頭(tou)要對半(ban)擰緊,中央不得留有曠地(di)。為確保(bao)中央不留曠地(di),應在兩接(jie)(jie)頭(tou)端頭(tou)處(chu)做好符號。做好后要用膠帶包(bao)裹緊密,以(yi)防漏漿。
嚴肅控制(zhi)出場(chang)(chang)波(bo)紋(wen)管涵(han)的原料質(zhi)量。進到現場(chang)(chang)的波(bo)紋(wen)管要(yao)會集堆放規(gui)整(zheng),工人(ren)不(bu)得在波(bo)紋(wen)管上踩踏(ta)。波(bo)紋(wen)管涵(han)要(yao)掩蓋維護,避免風吹雨(yu)淋使其提早老(lao)化。切(qie)開波(bo)紋(wen)管涵(han)要(yao)平直,禁止切(qie)成斜口。
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