鋼波紋管兩(liang)側(ce)(ce)的(de)部(bu)位回填(tian)采用級(ji)配良好的(de)天然(ran)砂礫(li)或與(yu)路(lu)基同材料的(de)回填(tian)料。填(tian)筑(zhu)必(bi)須在涵(han)(han)管(guan)兩(liang)側(ce)(ce)同步對稱進行。鋼(gang)波(bo)(bo)紋管(guan)填(tian)筑(zhu)時(shi)應分層(ceng)填(tian)筑(zhu)、分層(ceng)壓(ya)(ya)(ya)實,松鋪厚度為20cm,壓(ya)(ya)(ya)實度要(yao)求達(da)到95%方可進行下層(ceng)填(tian)筑(zhu)。在管(guan)身更大(da)直徑兩(liang)側(ce)(ce)30cm外(wai)使用18T壓(ya)(ya)(ya)路(lu)機(ji)碾壓(ya)(ya)(ya),30cm范圍內使用小型夯(hang)實機(ji)械(xie)夯(hang)實,以避免壓(ya)(ya)(ya)路(lu)機(ji)等(deng)大(da)型機(ji)械(xie)設備(bei)對鋼(gang)波(bo)(bo)紋管(guan)的(de)撞擊。鋼(gang)波(bo)(bo)紋涵(han)(han)管(guan)頂(ding)部(bu)填(tian)土(tu)厚度大(da)于或等(deng)于0.5m時(shi),才允許施工(gong)運輸(shu)車輛通過(guo)。對于有(you)兩(liang)端(duan)擋墻的(de)涵(han)(han)洞,回填(tian)應從兩(liang)端(duan)向結(jie)構中(zhong)心(xin)進行。
整裝鋼波紋管的優缺點同樣非常明顯
鋼波紋(wen)涵管采(cai)用輕(qing)型(xing)混凝土回填(tian)(tian)(tian)(tian)。采(cai)用液(ye)態(tai)粉煤灰回填(tian)(tian)(tian)(tian)。靠近管體四周50cm范(fan)圍(wei)內(nei),不(bu)允許有大于(yu)50mm的石(shi)塊、混凝土塊或其他有害腐蝕材料(liao)。填(tian)(tian)(tian)(tian)筑時應分(fen)(fen)層(ceng)(ceng)填(tian)(tian)(tian)(tian)筑、分(fen)(fen)層(ceng)(ceng)壓(ya)實(shi),每層(ceng)(ceng)壓(ya)實(shi)厚度為15cm,壓(ya)實(shi)度要求達到設計要求后方可進行下一層(ceng)(ceng)填(tian)(tian)(tian)(tian)筑。采(cai)用級配良好的天然砂礫(含(han)水(shui)量要求比(bi)更(geng)佳(jia)含(han)水(shui)量2%左右),人工用木棒在管身外(wai)向內(nei)側進行夯實(shi),木棒作(zuo)用點(dian)必(bi)須緊貼(tie)管身,每個凹槽(cao)部(bu)位(wei)都必(bi)須夯實(shi)到位(wei)。
鋼波紋(wen)管(guan)兩側(ce)(ce)及(ji)頂部20米范圍內(nei)不(bu)(bu)允許(xu)使用(yong)強夯機械。采用(yong)粗沙"水密(mi)法(fa)"振蕩器密(mi)實(shi)。更大粒徑不(bu)(bu)超過3cm的(de)(de)級(ji)配碎石回(hui)填。填筑必須在波紋(wen)涵管(guan)兩側(ce)(ce)對稱(cheng)同步進(jin)行,兩側(ce)(ce)的(de)(de)回(hui)填土高差不(bu)(bu)得大于15cm。然后(hou)用(yong)小型夯實(shi)機械斜向夯實(shi),確保管(guan)底的(de)(de)回(hui)填質(zhi)量(liang)。如果因偏土壓(ya)(ya)造成鋼波紋(wen)涵管(guan)變(bian)形的(de)(de),應修正截面尺寸后(hou)重新壓(ya)(ya)實(shi)。
鋼波紋管的優點:(1)涵(han)管(guan)(guan)、波(bo)(bo)紋管(guan)(guan)涵(han)、鋼制(zhi)波(bo)(bo)紋管(guan)(guan)涵(han)洞、金(jin)屬波(bo)(bo)紋涵(han)管(guan)(guan)適合(he)地(di)(di)基變(bian)型有(you)(you)經(jing)驗(yan)強(qiang),對(dui)地(di)(di)基承載(zai)有(you)(you)經(jing)驗(yan)、平整度(du)要求較(jiao)(jiao)低(di)(di),工(gong)(gong)程實際造(zao)價比同類(lei)跨徑的橋(qiao)、涵(han)洞相近或(huo)較(jiao)(jiao)低(di)(di)。(2)動工(gong)(gong)工(gong)(gong)期短(duan)是表(biao)面化(hua)(hua)的上風,土建(jian)工(gong)(gong)程與管(guan)(guan)節(jie)安(an)裝可分開實行。(3)施行工(gong)(gong)廠集中化(hua)(hua)生產(chan),生產(chan)不受背景影響,有(you)(you)匡助減低(di)(di)本錢(qian)、扼制(zhi)品(pin)質。(4)涵(han)管(guan)(guan)、波(bo)(bo)紋管(guan)(guan)涵(han)、鋼制(zhi)波(bo)(bo)紋管(guan)(guan)涵(han)洞、金(jin)屬波(bo)(bo)紋涵(han)管(guan)(guan)在場(chang)安(an)裝便捷,不需運用大型舉措(cuo)措(cuo)施。
我廠生產(chan)的金屬波紋(wen)涵管,嚴明依照JG/T3013-1994尺(chi)度生產(chan),應(ying)用(yong)于我國各大橋(qiao)梁工程。可(ke)具備接縫堅固、無(wu)(wu)泛起裂痕、無(wu)(wu)脫扣、不滲(shen)水(shui)、不滲(shen)漿(jiang)、可(ke)旋接、承(cheng)載(zai)有(you)經驗大等獨(du)特的地方,深(shen)受用(yong)戶的好評價。
金屬波紋(wen)涵(han)管(guan)也叫波紋(wen)管(guan)涵(han),是指鋪埋在馬路、鐵路下的涵(han)洞(dong)用螺絲扣波紋(wen)管(guan),它是由(you)波形金屬板卷制(zhi)成或用半圓波形鋼(gang)片拼(pin)制(zhi)成的圓形波紋(wen)管(guan)。應用于馬路、鐵路、小橋、通道、擋土墻以(yi)及各種礦場巷道擋墻支護等(deng)工程中(zhong)的涵(han)洞(dong)(管(guan))。
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