公路(lu)工(gong)(gong)程的涵(han)洞一(yi)般采用鋼筋(jin)混凝(ning)土制作。現采用公路(lu)鋼波(bo)紋管代替鋼筋(jin)混凝(ning)土進(jin)行涵(han)洞施(shi)工(gong)(gong)在國內(nei)時一(yi)項新(xin)技術(shu),公路(lu)鋼波(bo)紋管以其性(xing)能穩(wen)定、安裝方便、有利環保(bao)、造價(jia)低等(deng)優點迅(xun)速在公路(lu)施(shi)工(gong)(gong)中代替了(le)鋼筋(jin)混凝(ning)土施(shi)工(gong)(gong)的涵(han)洞,發展前景非常廣闊。
實踐(jian)證明(ming),用公(gong)路(lu)鋼波紋(wen)管(guan)(guan)代(dai)替鋼筋(jin)混凝(ning)土進行(xing)涵洞(dong)(dong)(dong)施(shi)工(gong)(gong)(gong),無(wu)論從(cong)施(shi)工(gong)(gong)(gong)周期、施(shi)工(gong)(gong)(gong)造價(jia)、環(huan)保(bao)意義等方(fang)面都有(you)其不可比擬的(de)優(you)越性(xing),且(qie)用金屬(shu)波紋(wen)涵管(guan)(guan)進行(xing)涵洞(dong)(dong)(dong)施(shi)工(gong)(gong)(gong),可大大提高(gao)道(dao)路(lu)行(xing)車的(de)舒適度與(yu)安全(quan)性(xing),避免道(dao)路(lu)中涵洞(dong)(dong)(dong)的(de)“錯臺跳車”現形,有(you)利于解(jie)決(jue)西(xi)北及我國寒冷(leng)地(di)區霜凍對砼管(guan)(guan)涵結構的(de)破壞問題。
鋼波紋管的特點:
(1)鋼波紋管涵(han)(han)結構(gou)強度高,勢鋼筋混凝土的1-3倍(bei);對(dui)地基承載能力、平整(zheng)度要求較(jiao)低,工程實際造(zao)價比同類跨徑的橋、涵(han)(han)洞相近(jin)或(huo)較(jiao)低。
(2)運營壽命(ming)長,可達100多(duo)年。
(3)施工周期短(duan),工廠集中(zhong)化生(sheng)產,生(sheng)產不受環(huan)境(jing)影響(xiang),有(you)利降低成本、控制質量(liang)。
(4)重量輕、施(shi)工便(bian)捷;現場(chang)安裝方便(bian),不(bu)需使(shi)用大型設(she)備。
(5)解決北方寒冷地(di)區(霜凍(dong))對橋梁和管涵(han)砼(tong)結構的破(po)壞問題。
(6)減少或根本舍(she)棄了常規建(jian)材,如水(shui)泥、黃砂、石子、木材的使用(yong),環保意義深(shen)遠。
(7)結構受力(li)情況合理(li),荷載分(fen)布均勻,并(bing)有一定(ding)的抗變(bian)形能力(li)。
(8)一年四(si)季可施工(gong),施工(gong)不(bu)受季節影響。
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