公(gong)(gong)(gong)路(lu)工程(cheng)的涵(han)洞(dong)(dong)一(yi)般采(cai)用鋼(gang)筋(jin)混(hun)凝(ning)土(tu)制作。現采(cai)用公(gong)(gong)(gong)路(lu)鋼(gang)波紋管代(dai)替鋼(gang)筋(jin)混(hun)凝(ning)土(tu)進行涵(han)洞(dong)(dong)施工在國內時一(yi)項新(xin)技(ji)術,公(gong)(gong)(gong)路(lu)鋼(gang)波紋管以其性能穩定、安裝方(fang)便、有(you)利環保、造價(jia)低(di)等(deng)優點(dian)迅速在公(gong)(gong)(gong)路(lu)施工中(zhong)代(dai)替了鋼(gang)筋(jin)混(hun)凝(ning)土(tu)施工的涵(han)洞(dong)(dong),發展(zhan)前景非常(chang)廣闊。
實踐證明,用(yong)公路(lu)(lu)鋼波(bo)紋(wen)管(guan)代替鋼筋混凝土進行涵洞(dong)施(shi)工(gong)(gong)(gong),無論從施(shi)工(gong)(gong)(gong)周期、施(shi)工(gong)(gong)(gong)造價、環保意義(yi)等方面都(dou)有其不可(ke)比擬的優越性,且用(yong)金屬波(bo)紋(wen)涵管(guan)進行涵洞(dong)施(shi)工(gong)(gong)(gong),可(ke)大(da)大(da)提高道路(lu)(lu)行車(che)的舒適度(du)與安全性,避免道路(lu)(lu)中涵洞(dong)的“錯(cuo)臺跳(tiao)車(che)”現形(xing),有利于解決西北(bei)及(ji)我國寒冷(leng)地區(qu)霜凍(dong)對(dui)砼管(guan)涵結構的破壞(huai)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(di)基承載能(neng)力、平整度要(yao)求較低,工程實際造(zao)價比同類跨徑的橋、涵(han)洞(dong)相近或(huo)較低。
(2)運營壽(shou)命長,可達100多年。
(3)施工(gong)(gong)周期短,工(gong)(gong)廠集中化生(sheng)(sheng)產(chan),生(sheng)(sheng)產(chan)不受環境影響(xiang),有利降低(di)成(cheng)本、控制質(zhi)量。
(4)重量輕(qing)、施工便(bian)捷;現場安(an)裝方便(bian),不(bu)需(xu)使用大型設備(bei)。
(5)解決北方(fang)寒冷地區(霜凍(dong))對橋梁和管涵砼(tong)結(jie)構的破壞問題。
(6)減少(shao)或(huo)根本舍棄了(le)常規建材,如(ru)水泥、黃砂、石子、木材的使用,環保(bao)意義深遠(yuan)。
(7)結(jie)構受力情況(kuang)合理,荷載分(fen)布(bu)均勻,并有(you)一定的抗(kang)變(bian)形能力。
(8)一年四季(ji)可施工(gong),施工(gong)不受季(ji)節影響。