公(gong)(gong)(gong)路(lu)(lu)工(gong)(gong)(gong)程(cheng)的(de)涵洞一般(ban)采用鋼(gang)(gang)筋混(hun)凝(ning)土(tu)制作。現采用公(gong)(gong)(gong)路(lu)(lu)鋼(gang)(gang)波(bo)紋管代替(ti)鋼(gang)(gang)筋混(hun)凝(ning)土(tu)進行(xing)涵洞施(shi)(shi)工(gong)(gong)(gong)在國內(nei)時一項新技(ji)術,公(gong)(gong)(gong)路(lu)(lu)鋼(gang)(gang)波(bo)紋管以其性能穩定、安裝方便、有利(li)環保(bao)、造價(jia)低等(deng)優點迅速在公(gong)(gong)(gong)路(lu)(lu)施(shi)(shi)工(gong)(gong)(gong)中(zhong)代替(ti)了鋼(gang)(gang)筋混(hun)凝(ning)土(tu)施(shi)(shi)工(gong)(gong)(gong)的(de)涵洞,發(fa)展前景(jing)非常廣闊。
實踐(jian)證(zheng)明(ming),用(yong)公路(lu)(lu)鋼(gang)波紋(wen)管(guan)代替鋼(gang)筋混凝(ning)土(tu)進行涵(han)洞(dong)(dong)施(shi)工(gong),無論(lun)從施(shi)工(gong)周期(qi)、施(shi)工(gong)造(zao)價、環保(bao)意義(yi)等(deng)方面都有(you)其不可比(bi)擬的(de)優越性(xing),且用(yong)金屬波紋(wen)涵(han)管(guan)進行涵(han)洞(dong)(dong)施(shi)工(gong),可大大提高道(dao)路(lu)(lu)行車(che)的(de)舒適度與安(an)全性(xing),避免道(dao)路(lu)(lu)中涵(han)洞(dong)(dong)的(de)“錯臺跳車(che)”現形,有(you)利于解決西(xi)北及我國寒冷地區霜凍對砼管(guan)涵(han)結構(gou)的(de)破壞問(wen)題。
鋼波紋管的特點:
(1)鋼(gang)波紋(wen)管涵(han)結構強度高,勢(shi)鋼(gang)筋混凝土的1-3倍;對(dui)地基承載能力、平整度要(yao)求較低,工程實際造(zao)價(jia)比同類(lei)跨徑(jing)的橋(qiao)、涵(han)洞相近或較低。
(2)運營(ying)壽命長,可達100多年。
(3)施工(gong)周(zhou)期短,工(gong)廠集中(zhong)化生產,生產不受環境(jing)影(ying)響,有利(li)降(jiang)低成本、控(kong)制(zhi)質(zhi)量。
(4)重量輕、施工便捷;現(xian)場安裝方便,不需使用大型設(she)備。
(5)解決北方寒冷地(di)區(霜凍)對橋梁和(he)管涵砼結構(gou)的破壞問題。
(6)減少或(huo)根本舍棄了常規(gui)建(jian)材,如水泥、黃(huang)砂、石(shi)子、木材的使(shi)用,環保(bao)意義(yi)深遠。
(7)結構受(shou)力情(qing)況(kuang)合理,荷載分布均勻,并有一定(ding)的抗變形能力。
(8)一年四季可施(shi)工,施(shi)工不受季節(jie)影(ying)響。
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