用鋼(gang)波(bo)(bo)紋(wen)板(ban)加(jia)固(gu)(gu)舊橋(qiao)是近(jin)些年(nian)開始發展的(de)(de)一(yi)種加(jia)固(gu)(gu)方法，鋼(gang)波(bo)(bo)紋(wen)板(ban)其自重輕(qing)、方便運(yun)輸、可以縮短施(shi)工(gong)的(de)(de)工(gong)期且施(shi)工(gong)簡(jian)單、能(neng)夠很好(hao)的(de)(de)適(shi)應(ying)變形,相比傳統的(de)(de)加(jia)固(gu)(gu)方法。鋼(gang)波(bo)(bo)紋(wen)板(ban)加(jia)固(gu)(gu)舊橋(qiao)具有很好(hao)的(de)(de)發展前景。加(jia)固(gu)(gu)基本原理(li):隧道加(jia)固(gu)(gu)結(jie)構采(cai)用鋼(gang)波(bo)(bo)紋(wen)板(ban)內襯(chen)連接而成,鋼(gang)波(bo)(bo)紋(wen)板(ban)內村在I廠內預(yu)制完成,進(jin)行預(yu)拼裝(zhuang)(zhuang),預(yu)拼裝(zhuang)(zhuang)合(he)格以后將板(ban)片運(yun)輸至現場。

鋼波紋涵管進行涵洞施工時要解決哪些問題？

特別是在(zai)一些舊(jiu)涵、舊(jiu)橋加(jia)固(gu)工(gong)程也(ye)有應(ying)用(yong),其加(jia)固(gu)原理與(yu)隧道加(jia)固(gu)基本(ben)-致。金(jin)屬波(bo)紋涵管代(dai)替鋼(gang)筋(jin)混凝土進(jin)行涵洞(dong)施(shi)工(gong),無論從施(shi)工(gong)周期(qi)、施(shi)工(gong)造價、環保意義(yi)等方面(mian)都有其不可比(bi)擬的(de)優越性,且(qie)用(yong)金(jin)屬波(bo)紋涵管進(jin)行涵洞(dong)施(shi)工(gong),可大(da)大(da)提高(gao)道路行車(che)的(de)舒適(shi)度與(yu)安(an)全性,避免道路中涵洞(dong)的(de)“錯(cuo)臺跳車(che)”現形,有利于(yu)解決(jue)西(xi)北及我(wo)國寒冷地(di)區(qu)霜凍對砼管涵結構的(de)破壞問(wen)題。

鋼波紋涵管投入到了青海公(gong)(gong)路(lu)(lu)施(shi)工(gong)(gong)(gong)(gong)(gong)當中,三年的(de)(de)(de)(de)實(shi)(shi)踐證明(ming),金屬(shu)波(bo)紋(wen)涵(han)管(guan)(guan)在北方(fang)寒冷(leng)(leng)地(di)(di)區完(wan)全符合公(gong)(gong)路(lu)(lu)建設當中的(de)(de)(de)(de)涵(han)洞施(shi)工(gong)(gong)(gong)(gong)(gong)要求。實(shi)(shi)踐證明(ming),用金屬(shu)波(bo)紋(wen)涵(han)管(guan)(guan)代替金屬(shu)筋(jin)混凝(ning)土進行(xing)(xing)涵(han)洞施(shi)工(gong)(gong)(gong)(gong)(gong),無(wu)論從(cong)施(shi)工(gong)(gong)(gong)(gong)(gong)周期、施(shi)工(gong)(gong)(gong)(gong)(gong)造價、環保意義等方(fang)面(mian)都有其不可(ke)比擬(ni)的(de)(de)(de)(de)優越性,且用金屬(shu)波(bo)紋(wen)涵(han)管(guan)(guan)進行(xing)(xing)涵(han)洞施(shi)工(gong)(gong)(gong)(gong)(gong),可(ke)大(da)大(da)提高(gao)道路(lu)(lu)行(xing)(xing)車(che)的(de)(de)(de)(de)舒適度與安全性,避免(mian)道路(lu)(lu)中涵(han)洞的(de)(de)(de)(de)“錯臺跳車(che)”現(xian)形,有利于解(jie)決西北地(di)(di)區寒冷(leng)(leng)霜凍對砼管(guan)(guan)涵(han)結構的(de)(de)(de)(de)破壞問題。

金屬波(bo)紋涵(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)出(chu)廠時,涵(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)及配件(jian)均經過熱(re)浸鍍(du)(du)鋅(xin)處理(li),鍍(du)(du)鋅(xin)層(ceng)平均厚度大于84μm,在沒(mei)有(you)亂石沖刷的(de)情況下,它的(de)鍍(du)(du)鋅(xin)層(ceng)就可(ke)防止銹蝕。國內(nei)涵(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)出(chu)廠前,根(gen)(gen)據鋼管(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)壁(bi)每年蝕耗厚度0.01-0.03mm,鑫豐(feng)產品(pin)都比國外(wai)涵(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)做的(de)要保守,比正常(chang)管(guan)(guan)(guan)(guan)(guan)壁(bi)厚度增(zeng)加了(le)(le)0.5mm,可(ke)提高(gao)使用壽(shou)命,而且(qie)涵(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)運至施(shi)工(gong)(gong)現(xian)場后,工(gong)(gong)地涂(tu)涮兩(liang)遍瀝青,瀝青涂(tu)層(ceng)厚度達到0.3-0.5mm,并且(qie)根(gen)(gen)據國內(nei)車輛超載運輸的(de)實際情況還對(dui)金屬波(bo)紋涵(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)的(de)技術參數(shu)(波(bo)距、波(bo)深(shen)、壁(bi)厚)進行了(le)(le)調整,增(zeng)大了(le)(le)涵(han)(han)(han)管(guan)(guan)(guan)(guan)(guan)在國內(nei)使用的(de)保險系數(shu)。

實踐證明,用金屬(shu)波紋涵(han)(han)管代替金屬(shu)筋混(hun)凝土進行涵(han)(han)洞(dong)施(shi)(shi)工(gong)(gong),無論從(cong)施(shi)(shi)工(gong)(gong)周期、施(shi)(shi)工(gong)(gong)造價、環保意(yi)義(yi)等方面都有(you)其不可比擬的(de)優越性(xing),且用金屬(shu)波紋涵(han)(han)管進行涵(han)(han)洞(dong)施(shi)(shi)工(gong)(gong),可大大提高道(dao)路行車(che)的(de)舒適度與安全性(xing),避免道(dao)路中涵(han)(han)洞(dong)的(de)“錯臺(tai)跳車(che)”現形,有(you)利于解決西北地區寒冷霜東對砼管涵(han)(han)結構的(de)破(po)壞問題。

以上幾種(zhong)措施即可(ke)滿(man)足使用(yong)要求,使用(yong)壽(shou)命(ming)完全能適合公路的(de)(de)需求,更能滿(man)足受流石(shi)沖刷的(de)(de)涵(han)洞(dong),確(que)保流石(shi)對涵(han)管(guan)管(guan)壁的(de)(de)沖擊。金屬波紋涵(han)管(guan)的(de)(de)剛度(du)計算,波紋管(guan)的(de)(de)剛度(du)按照載荷(he)及位(wei)移性(xing)質(zhi)不同,分(fen)為軸向剛度(du)、彎曲剛度(du)、扭轉剛度(du)等。目前在波紋管(guan)的(de)(de)應用(yong)中,絕大多數的(de)(de)受力(li)情況是軸向載荷(he),位(wei)移方式為線位(wei)移。

公路(lu)工(gong)程的(de)涵(han)(han)洞(dong)(dong)一(yi)般采(cai)用金(jin)屬(shu)(shu)(shu)筋(jin)混凝(ning)(ning)土(tu)制(zhi)作(zuo)。現采(cai)用金(jin)屬(shu)(shu)(shu)波(bo)紋(wen)涵(han)(han)管(guan)代(dai)替金(jin)屬(shu)(shu)(shu)筋(jin)混凝(ning)(ning)土(tu)進行涵(han)(han)洞(dong)(dong)施(shi)工(gong)在國內時(shi)-項新(xin)技術,金(jin)屬(shu)(shu)(shu)波(bo)紋(wen)涵(han)(han)管(guan)以其性能(neng)穩定、安裝方便、有利(li)環保、造價低等(deng)優點迅速在公路(lu)施(shi)工(gong)中(zhong)代(dai)替了金(jin)屬(shu)(shu)(shu)筋(jin)混凝(ning)(ning)土(tu)施(shi)工(gong)的(de)涵(han)(han)洞(dong)(dong),發展前(qian)景非常廣(guang)闊。

1990年,日本高(gao)速公路設(she)計(ji),規范制定(ding)了(le)波(bo)紋管涵設(she)計(ji)技術規范。隨著(zhu)鋼波(bo)紋涵管在世界各(ge)(ge)地(di)的(de)安裝使(shi)用(yong),證明了此種結構(gou)在各(ge)(ge)種使(shi)用(yong)情(qing)況下(xia)的(de)通(tong)用(yong)性(xing)。在我國改革開(kai)放后,深(shen)圳及大同煤礦開(kai)始(shi)從國外(wai)進(jin)口成(cheng)品(pin)波紋管(guan)涵進(jin)行涵洞施(shi)工。

波(bo)紋板內襯之間現場采用(yong)高強(qiang)螺(luo)栓拼接,波(bo)紋板加(jia)固結構與既有(you)隧(sui)道(dao)壁之間灌(guan)注自密實混(hun)凝(ning)土,施I速度相(xiang)(xiang)當快,加(jia)固效果相(xiang)(xiang)當好。加(jia)固在夜間進行，不中斷鐵(tie)路(lu)交通(tong)(tong)(tong),值得推廣應用(yong)。方(fang)案缺(que)點是(shi)對隧(sui)道(dao)的(de)(de)(de)凈寬和凈高有(you)一定壓縮。其(qi)實，鋼波(bo)紋板結構在國內其(qi)他的(de)(de)(de)工程上有(you)很多應用(yong),壁如公路(lu)涵(han)洞通(tong)(tong)(tong)道(dao),軟土地區(qu)的(de)(de)(de)涵(han)洞通(tong)(tong)(tong)道(dao),城市綜合管廊上也有(you)少量應用(yong)。

金(jin)屬波(bo)(bo)紋(wen)涵管是將薄金(jin)屬板(ban)板(ban)面壓(ya)成波(bo)(bo)紋(wen)后,卷制成管節,可以(yi)增加管節的剛度和對(dui)管軸(zhou)壓(ya)力的抵抗強度;出廠前采(cai)用熱浸鍍(du)鋅工藝和施工現場噴涂瀝青,雙層(ceng)防(fang)腐處(chu)理(li)保證(zheng)了使用壽命;用此(ci)種管節修建的涵洞被稱為(wei)波(bo)(bo)紋(wen)金(jin)屬管涵。

之后，上海市(shi)公路(lu)(lu)管理處上海市(shi)政工程(cheng)設計研究院上海同濟大學對金(jin)屬(shu)波紋涵管進行了(le)(le)動(dong)、靜(jing)載(zai)試(shi)驗,結果表明(ming)能滿足設計使(shi)用要求,埴補(bu)了(le)(le)國內的空白,且(qie)迅速得到推廣應用。幕墻(qiang)一貫(guan)反應用于我(wo)國各地公路(lu)(lu)設施建(jian)設當中。

在公路(lu)施工(gong)(gong)中(zhong)，應(ying)用金屬波紋涵(han)(han)(han)(han)管代替金屬筋混(hun)凝土進(jin)行(xing)涵(han)(han)(han)(han)洞施工(gong)(gong)的(de)歷史已經有(you)100多年了。1896年,美(mei)國率(lv)行(xing)波紋管涵(han)(han)(han)(han)通道、涵(han)(han)(han)(han)管的(de)可(ke)行(xing)性研究。后，在美(mei)國、加拿大(da)、澳大(da)利(li)亞等國的(de)公路(lu)建(jian)設中(zhong),均采用了金屬波紋涵(han)(han)(han)(han)管進(jin)行(xing)涵(han)(han)(han)(han)洞的(de)施工(gong)(gong)。鋼波紋涵(han)(han)(han)(han)管網址：hanihanbj.com