鋼波紋管根據以(yi)往(wang)經歷，施(shi)(shi)工(gong)現(xian)場發現(xian)，管(guan)(guan)體頂部還沒停止時，就將(jiang)鋼波紋(wen)涵管(guan)(guan)上下游的(de)八字墻(qiang)、一字墻(qiang)施(shi)(shi)工(gong)完成了，這種施(shi)(shi)工(gong)方式(shi)將(jiang)存(cun)在填(tian)土(tu)(tu)結束后(hou)端墻(qiang)裂縫的(de)弊端，因波紋(wen)管(guan)(guan)在填(tian)土(tu)(tu)過程中存(cun)在管(guan)(guan)壁變形，一般(ban)變形量為管(guan)(guan)徑±0.5-2%，當然此(ci)變形數值和(he)管(guan)(guan)側(ce)填(tian)土(tu)(tu)的(de)密實度有(you)很大(da)關系。
但(dan)填(tian)土(tu)停止(zhi)后波紋管不再(zai)變形，建成后行車動載對其影響很微小，（管壁(bi)的(de)變形為(wei)0.06-0.15cm）。因此(ci)，為(wei)避免端墻(qiang)裂(lie)縫，可采(cai)取以下兩(liang)種措施。根(gen)底做好(hao)后，上(shang)下游的(de)八(ba)字墻(qiang)、一字墻(qiang)根(gen)底和(he)砂礫根(gen)底上(shang)頂(ding)面標高一致(zhi)即可，開始拼(pin)裝(zhuang)鋼波紋涵(han)管，在管體裝(zhuang)置(zhi)就位結(jie)束后，可采(cai)取不施工端墻(qiang)。
而將波紋管的填土填至路頂面標高十五日后再施工端墻。也便是波紋管停止了管壁的變形后。鋼波紋涵管裝置就位結束后，可(ke)以將(jiang)兩(liang)端端八字墻(qiang)、一字墻(qiang)施(shi)工至(zhi)與波紋管(guan)(guan)管(guan)(guan)頂(ding)高度(du)一致時就不再施(shi)工，波紋管(guan)(guan)管(guan)(guan)頂(ding)部(bu)填(tian)土填(tian)至(zhi)路基規(gui)劃標高再夯(hang)實。
The end wall will be constructed 15 days after the corrugated pipe is filled to the road top elevation. That is, after the bellows stops the deformation of the pipe wall. After the installation of steel corrugated culvert is completed, the splayed wall and splayed wall at both ends can be constructed to the same height as the top of corrugated pipe. The top of corrugated pipe can be filled to the planned elevation of subgrade and then compacted.
否(fou)則應重新復核，以確認測到的(de)扭力矩值(zhi)是(shi)否(fou)滿足(zu)要(yao)求。鋼(gang)波(bo)(bo)紋管在(zai)出(chu)廠前應嚴格按(an)鋼(gang)波(bo)(bo)紋涵管加(jia)工(gong)檢驗規(gui)范(fan)進行，并進行必要(yao)的(de)預拼裝(zhuang)。鋼(gang)波(bo)(bo)紋涵管現(xian)場拼裝(zhuang)，有必要(yao)嚴格按(an)照規(gui)劃以及鋼(gang)波(bo)(bo)紋涵管施工(gong)裝(zhuang)置規(gui)范(fan)的(de)要(yao)求施工(gong)。
現場施工中土建部分檢驗規范可參照交通部《公路工程質量檢驗評定規范》JTGF801-2004中有關規范，鋼波紋管外回填土的檢驗可歸入路基工程之中。重量輕，裝置時不需要大型吊運設備。軸向柔性好，敷設時對溝槽底部平坦度，堅實度需求較低，接受裝置不當所構成的非正常應力的能力強。//hanihanbj.com/
| 分享此文章： |
