解(jie)決北(bei)方寒冷地區（霜凍(dong)）對橋梁和管涵(han)砼結構(gou)的(de)破壞問題.涵(han)管、鋼波紋管涵、鋼制波(bo)紋(wen)管(guan)(guan)(guan)涵(han)(han)洞、金屬(shu)(shu)波(bo)紋(wen)涵(han)(han)管(guan)(guan)(guan)現場(chang)安裝方(fang)便(bian),不需使(shi)用(yong)大型(xing)設備.減少或(huo)根本舍棄(qi)了(le)常規建材,如水泥、黃砂(sha)、石子、木材的使(shi)用(yong),環保意義(yi)深遠.涵(han)(han)管(guan)(guan)(guan)、波(bo)紋(wen)管(guan)(guan)(guan)涵(han)(han)、鋼制波(bo)紋(wen)管(guan)(guan)(guan)、金屬(shu)(shu)波(bo)紋(wen)涵(han)(han)管(guan)(guan)(guan)適應地基變形能力強,對(dui)地基承載能力、平整(zheng)度要(yao)求(qiu)較低(di)。

鋼波紋涵管適應(ying)地形(xing)變形(xing)能(neng)力的優點(dian)

工程實(shi)際造價比同類跨徑的橋、涵(han)洞(dong)相近或較低.涵(han)管、波(bo)(bo)紋(wen)管涵(han)、鋼(gang)制(zhi)波(bo)(bo)紋(wen)管涵(han)洞(dong)、金(jin)屬波(bo)(bo)紋(wen)涵(han)管采(cai)用(yong)標(biao)準化設計,生(sheng)產、設計簡單,生(sheng)產周期短.鋼(gang)波(bo)(bo)紋(wen)涵(han)管采(cai)用(yong)輕型(xing)混凝(ning)土(tu)回填。采(cai)用(yong)液態(tai)粉煤(mei)灰回填。靠近管體附近50cm范圍(wei)內(nei)，不答應有(you)大(da)于50mm的石塊(kuai)、混凝(ning)土(tu)塊(kuai)或其他(ta)有(you)害侵蝕材(cai)料。

公路鋼波紋(wen)管

填(tian)筑(zhu)(zhu)時應分層(ceng)(ceng)填(tian)筑(zhu)(zhu)、分層(ceng)(ceng)壓(ya)(ya)實(shi)(shi)，每層(ceng)(ceng)壓(ya)(ya)實(shi)(shi)厚度為15cm，壓(ya)(ya)實(shi)(shi)度要(yao)求達到(dao)設計要(yao)求后方可進行下一層(ceng)(ceng)填(tian)筑(zhu)(zhu)。采用級配(pei)良(liang)好的自然砂(sha)礫(含水量(liang)(liang)要(yao)求比更佳含水量(liang)(liang)2%左右(you))，人工用木棒(bang)在管(guan)身外向內(nei)側進行夯實(shi)(shi)，木棒(bang)作用點(dian)必需緊(jin)貼管(guan)身，每個凹槽部(bu)位都必需夯實(shi)(shi)到(dao)位。

施工(gong)工(gong)期(qi)短是明(ming)顯(xian)的(de)優勢,土建(jian)工(gong)程(cheng)與管節安(an)裝可分開實(shi)施.進行工(gong)廠集中化生(sheng)產(chan),生(sheng)產(chan)不受環境影(ying)響,有利降低成本、控制質量.波(bo)紋涵管有利于改善軟土地基結構物與路堤交界(jie)處的(de)“錯臺”現象,提高行車的(de)舒(shu)適度與安(an)全性,減少工(gong)后營運、養護成本.鋼波(bo)紋管兩側(ce)及頂部20米范圍內不答(da)應使用強夯(hang)機(ji)械。

采用(yong)粗沙"水密(mi)法"振蕩器密(mi)實。更大(da)粒(li)徑(jing)不(bu)超過3cm的級配碎石(shi)回填。填筑必需在波紋涵管(guan)兩側對稱同步進行，兩側的回填土高差(cha)不(bu)得(de)大(da)于15cm。然(ran)后用(yong)小(xiao)型夯實機械斜(xie)向(xiang)夯實，確保管(guan)底(di)的回填質量。假如因偏(pian)土壓造成鋼波紋涵管(guan)變(bian)形的，應修正截面尺寸后重新壓實。

鋼制波紋管涵

鋼(gang)波(bo)(bo)紋(wen)管(guan)(guan)(guan)兩側的(de)部位回填(tian)(tian)(tian)(tian)采用級配良好的(de)自然砂礫或與(yu)路(lu)基同材料的(de)回填(tian)(tian)(tian)(tian)料。填(tian)(tian)(tian)(tian)筑必需在涵管(guan)(guan)(guan)兩側同步(bu)對稱進(jin)行。鋼(gang)波(bo)(bo)紋(wen)管(guan)(guan)(guan)填(tian)(tian)(tian)(tian)筑時(shi)應分層(ceng)填(tian)(tian)(tian)(tian)筑、分層(ceng)壓(ya)實，松鋪厚(hou)度(du)為20cm，壓(ya)實度(du)要(yao)求達到95%方可進(jin)行下層(ceng)填(tian)(tian)(tian)(tian)筑。在管(guan)(guan)(guan)身更大直徑兩側30cm外使用18T壓(ya)路(lu)機(ji)(ji)碾壓(ya)，30cm范圍內使用小型夯實機(ji)(ji)械夯實，以(yi)避(bi)免壓(ya)路(lu)機(ji)(ji)等大型機(ji)(ji)械設備對鋼(gang)波(bo)(bo)紋(wen)管(guan)(guan)(guan)的(de)撞擊(ji)。

鋼(gang)波紋(wen)涵(han)(han)(han)(han)管(guan)(guan)(guan)(guan)頂部填(tian)土厚度大于或即是0.5m時，才答應(ying)(ying)施(shi)工運輸(shu)車輛通過。對于有兩(liang)端擋(dang)墻的(de)涵(han)(han)(han)(han)洞，回填(tian)應(ying)(ying)從兩(liang)端向結構(gou)中(zhong)央進行。涵(han)(han)(han)(han)管(guan)(guan)(guan)(guan)、波紋(wen)管(guan)(guan)(guan)(guan)涵(han)(han)(han)(han)、鋼(gang)制波紋(wen)管(guan)(guan)(guan)(guan)涵(han)(han)(han)(han)洞、金屬(shu)波紋(wen)涵(han)(han)(han)(han)管(guan)(guan)(guan)(guan)結構(gou)受力(li)情況合(he)理,荷載(zai)分布均勻,并有一定(ding)的(de)抗(kang)變(bian)形能力(li).（hanihanbj.com）