公(gong)(gong)(gong)路工(gong)(gong)程的涵洞(dong)一(yi)般(ban)采用鋼筋(jin)混(hun)(hun)凝土(tu)制作。現采用公(gong)(gong)(gong)路鋼波紋管代(dai)替鋼筋(jin)混(hun)(hun)凝土(tu)進行(xing)涵洞(dong)施工(gong)(gong)在(zai)國內時一(yi)項新技術,公(gong)(gong)(gong)路鋼波紋管以其性能穩定、安裝方便、有利環保(bao)、造價低等(deng)優點迅(xun)速在(zai)公(gong)(gong)(gong)路施工(gong)(gong)中代(dai)替了(le)鋼筋(jin)混(hun)(hun)凝土(tu)施工(gong)(gong)的涵洞(dong),發展前景非常廣闊。
實踐證(zheng)明,用公路(lu)鋼波紋(wen)管(guan)代替鋼筋混凝土進(jin)(jin)行涵(han)(han)洞施(shi)工(gong),無論從施(shi)工(gong)周期、施(shi)工(gong)造價、環保意義(yi)等方面都有(you)其不可(ke)比擬的優越性(xing),且用金屬波紋(wen)涵(han)(han)管(guan)進(jin)(jin)行涵(han)(han)洞施(shi)工(gong),可(ke)大大提高道(dao)路(lu)行車的舒(shu)適(shi)度與安全性(xing),避(bi)免道(dao)路(lu)中涵(han)(han)洞的“錯臺跳車”現(xian)形,有(you)利于解決(jue)西(xi)北及我國寒(han)冷(leng)地(di)區霜凍對砼管(guan)涵(han)(han)結(jie)構的破(po)壞問題。
鋼波紋管的特點:
(1)鋼(gang)波紋管涵結(jie)構強度(du)(du)高,勢鋼(gang)筋混凝(ning)土的1-3倍;對地基承載能(neng)力、平(ping)整度(du)(du)要求較(jiao)低,工(gong)程實際造價比同(tong)類跨徑的橋、涵洞相近或較(jiao)低。
(2)運營壽命(ming)長,可達(da)100多年。
(3)施工周期(qi)短,工廠集中化生(sheng)產,生(sheng)產不受(shou)環(huan)境(jing)影響,有利降低(di)成本、控制質量。
(4)重量輕(qing)、施(shi)工便(bian)捷(jie);現(xian)場安裝方便(bian),不需使(shi)用大型(xing)設(she)備(bei)。
(5)解決北(bei)方(fang)寒冷(leng)地區(qu)(霜凍)對橋梁和管涵砼(tong)結構的(de)破壞問題。
(6)減(jian)少或根本舍(she)棄了常規建材,如水泥、黃砂、石(shi)子、木材的使用,環保意義深遠。
(7)結構受(shou)力情況合(he)理,荷載分(fen)布均勻,并有一定的抗變形(xing)能力。
(8)一年(nian)四季(ji)可施(shi)(shi)工,施(shi)(shi)工不(bu)受(shou)季(ji)節(jie)影響。
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