鋼波紋涵管管壁(bi)內(nei)外(wai)防滲處(chu)理:管壁(bi)內(nei)外(wai)涂乳化瀝(li)青或熱瀝(li)青兩道,從外(wai)觀看(kan)守壁(bi)內(nei)外(wai)平(ping)均的(de)涂成(cheng)了(le)黑(hei)管即可。一般瀝(li)青涂層(ceng)的(de)厚度要達到1mm。
如何提高鋼波紋涵管安裝的定位準確度?
鑲(xiang)石(shi)棉(mian)墊:因為現場地勢(shi)等(deng)原因,有(you)(you)時(shi)相鄰兩(liang)法(fa)蘭(lan)之間(jian)(jian)(jian)(jian)間(jian)(jian)(jian)(jian)距(ju)較小,這時(shi)用(yong)手錘(chui)、鑿子把(ba)兩(liang)法(fa)蘭(lan)之間(jian)(jian)(jian)(jian)鑿開大(da)約(yue)1cm的(de)縫隙,用(yong)螺(luo)絲(si)刀把(ba)石(shi)棉(mian)墊鑲(xiang)在兩(liang)法(fa)蘭(lan)之間(jian)(jian)(jian)(jian),有(you)(you)時(shi)管子頂部兩(liang)法(fa)蘭(lan)間(jian)(jian)(jian)(jian)距(ju)較大(da),石(shi)棉(mian)墊鑲(xiang)嵌(qian)難(nan)題,用(yong)綁絲(si)把(ba)石(shi)棉(mian)墊綁在螺(luo)栓上固定,然后(hou)工人開始(shi)對稱鎖緊螺(luo)絲(si)。直至從外觀看兩(liang)法(fa)蘭(lan)之間(jian)(jian)(jian)(jian)只(zhi)有(you)(you)2—3mm的(de)縫隙即可。
連(lian)接安裝(zhuang)(zhuang)波(bo)紋(wen)管(guan)(guan)(guan):根據涵(han)洞實(shi)際情況,排放(fang)涵(han)管(guan)(guan)(guan)。假如(ru)涵(han)洞兩(liang)(liang)(liang)側(ce)(ce)進出(chu)(chu)水(shui)口(kou)是與(yu)路基(ji)同坡(po)度的斜口(kou)形式,安裝(zhuang)(zhuang)時先安裝(zhuang)(zhuang)中(zhong)(zhong)間(jian)管(guan)(guan)(guan)節(jie)(jie)(jie),在基(ji)礎長度方向留出(chu)(chu)進出(chu)(chu)水(shui)口(kou)的位(wei)置。中(zhong)(zhong)間(jian)管(guan)(guan)(guan)節(jie)(jie)(jie)全(quan)部安裝(zhuang)(zhuang)完畢,校正(zheng)就(jiu)位(wei)后再安裝(zhuang)(zhuang)兩(liang)(liang)(liang)側(ce)(ce)進出(chu)(chu)水(shui)口(kou)。安裝(zhuang)(zhuang)時從一側(ce)(ce)排放(fang)根管(guan)(guan)(guan)節(jie)(jie)(jie),使(shi)其管(guan)(guan)(guan)子中(zhong)(zhong)央和基(ji)礎縱(zong)向中(zhong)(zhong)央線平(ping)行,同樣把第二根管(guan)(guan)(guan)放(fang)置就(jiu)位(wei),當兩(liang)(liang)(liang)根管(guan)(guan)(guan)相鄰(lin)法(fa)(fa)蘭間(jian)相距3—5cm的縫隙時,用小撬棍對(dui)準法(fa)(fa)蘭上的螺栓孔,使(shi)其兩(liang)(liang)(liang)根管(guan)(guan)(guan)法(fa)(fa)蘭上的螺栓孔對(dui)正(zheng),這時從第二節(jie)(jie)(jie)管(guan)(guan)(guan)的另(ling)一端用撬杠撬動管(guan)(guan)(guan)節(jie)(jie)(jie),使(shi)其縱(zong)向平(ping)移,使(shi)兩(liang)(liang)(liang)法(fa)(fa)蘭間(jian)距在2cm左(zuo)右(you),然后全(quan)部穿上螺栓,擰(ning)上螺絲,帶平(ping)扣即可。此后依(yi)此方式逐節(jie)(jie)(jie)依(yi)次(ci)連(lian)接,每(mei)道(dao)涵(han)洞中(zhong)(zhong)間(jian)管(guan)(guan)(guan)節(jie)(jie)(jie)無先后次(ci)序,可以隨意(yi)連(lian)接。
考慮到頂(ding)板波(bo)(bo)(bo)紋(wen)(wen)管(guan)(guan)涵數目在(zai)逐步削(xue)減,但凡與波(bo)(bo)(bo)紋(wen)(wen)管(guan)(guan)涵抵觸的(de)部(bu)件都(dou)要(yao)躲(duo)避波(bo)(bo)(bo)紋(wen)(wen)管(guan)(guan)。澆筑砼時(shi)(shi),禁(jin)止(zhi)對著波(bo)(bo)(bo)紋(wen)(wen)管(guan)(guan)涵放料。振搗(dao)(dao)棒禁(jin)止(zhi)與波(bo)(bo)(bo)紋(wen)(wen)管(guan)(guan)碰撞,禁(jin)止(zhi)兩(liang)個振搗(dao)(dao)棒夾著一根波(bo)(bo)(bo)紋(wen)(wen)管(guan)(guan)涵振搗(dao)(dao)。特別是腹板振搗(dao)(dao)時(shi)(shi),禁(jin)止(zhi)振搗(dao)(dao)棒在(zai)統(tong)一方位長期振搗(dao)(dao),振搗(dao)(dao)時(shi)(shi)刻以不超越20秒為準。拆模時(shi)(shi) 注意維護端頭處外漏的(de)波(bo)(bo)(bo)紋(wen)(wen)管(guan)(guan)涵。
鋼波紋涵管方位(wei)(wei)(wei)定位(wei)(wei)(wei)要,尤(you)其(qi)是接(jie)近接(jie)頭的部位(wei)(wei)(wei),波(bo)紋管(guan)涵定位(wei)(wei)(wei)鋼筋間隔為0.5米(mi),不(bu)得缺少。焊接(jie)鋼筋接(jie)近波(bo)紋管(guan)涵時,要采納辦法維護波(bo)紋管(guan)不(bu)得被灼傷(shang),如不(bu)當心灼傷(shang),灼傷(shang)處要用膠帶包裹緊密。
波(bo)紋(wen)(wen)管(guan)涵接頭(tou)的(de)辦法(fa):波(bo)紋(wen)(wen)管(guan)涵接頭(tou)處要外包(bao)0.3米長(chang)的(de)大號波(bo)紋(wen)(wen)管(guan),而且兩端(duan)頭(tou)要對(dui)半(ban)擰緊,中(zhong)(zhong)央(yang)不得(de)留有(you)曠地。為確(que)保中(zhong)(zhong)央(yang)不留曠地,應(ying)在兩接頭(tou)端(duan)頭(tou)處做好符(fu)號。做好后要用膠帶包(bao)裹緊密(mi),以防(fang)漏漿。
嚴(yan)肅控(kong)制出場(chang)波(bo)紋(wen)(wen)管涵的(de)原(yuan)料質量。進到現場(chang)的(de)波(bo)紋(wen)(wen)管要(yao)會(hui)集堆放規整,工人不得(de)在波(bo)紋(wen)(wen)管上(shang)踩踏。波(bo)紋(wen)(wen)管涵要(yao)掩蓋(gai)維(wei)護,避免風吹雨淋使其提早老化。切開(kai)波(bo)紋(wen)(wen)管涵要(yao)平(ping)直(zhi),禁止切成斜口。
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