用(yong)鋼(gang)波(bo)(bo)紋板(ban)(ban)(ban)(ban)(ban)加(jia)固(gu)(gu)舊(jiu)橋是近些年(nian)開始(shi)發展(zhan)的一種加(jia)固(gu)(gu)方(fang)法，鋼(gang)波(bo)(bo)紋板(ban)(ban)(ban)(ban)(ban)其自重輕(qing)、方(fang)便(bian)運輸、可以縮(suo)短施工(gong)(gong)的工(gong)(gong)期且施工(gong)(gong)簡單、能夠很好(hao)的適應(ying)變形(xing),相比傳(chuan)統的加(jia)固(gu)(gu)方(fang)法。鋼(gang)波(bo)(bo)紋板(ban)(ban)(ban)(ban)(ban)加(jia)固(gu)(gu)舊(jiu)橋具有很好(hao)的發展(zhan)前景。加(jia)固(gu)(gu)基本原理:隧(sui)道加(jia)固(gu)(gu)結構采用(yong)鋼(gang)波(bo)(bo)紋板(ban)(ban)(ban)(ban)(ban)內襯連接而成,鋼(gang)波(bo)(bo)紋板(ban)(ban)(ban)(ban)(ban)內村在I廠內預(yu)制完成,進行預(yu)拼裝,預(yu)拼裝合格以后(hou)將板(ban)(ban)(ban)(ban)(ban)片運輸至現場。

鋼波紋涵管進行涵洞施工時要解決哪些問題？

特別是在一些(xie)舊涵(han)(han)(han)、舊橋加(jia)固(gu)工(gong)(gong)(gong)程也有應用,其(qi)加(jia)固(gu)原理與隧道加(jia)固(gu)基本-致。金屬波紋(wen)涵(han)(han)(han)管代替鋼筋混凝土進行(xing)涵(han)(han)(han)洞(dong)施(shi)工(gong)(gong)(gong),無論從施(shi)工(gong)(gong)(gong)周期(qi)、施(shi)工(gong)(gong)(gong)造(zao)價(jia)、環保(bao)意義等方面(mian)都有其(qi)不可比(bi)擬的(de)(de)優越性,且用金屬波紋(wen)涵(han)(han)(han)管進行(xing)涵(han)(han)(han)洞(dong)施(shi)工(gong)(gong)(gong),可大大提(ti)高道路(lu)行(xing)車(che)(che)的(de)(de)舒適度(du)與安全性,避免道路(lu)中涵(han)(han)(han)洞(dong)的(de)(de)“錯臺(tai)跳車(che)(che)”現形,有利于解決西北及我國寒冷地(di)區霜凍對砼管涵(han)(han)(han)結構的(de)(de)破壞問題(ti)。

鋼波紋涵管投入到(dao)了(le)青海公(gong)路(lu)施(shi)工(gong)(gong)(gong)當(dang)中(zhong),三年的(de)(de)實踐證明,金屬(shu)(shu)波紋(wen)(wen)(wen)涵(han)管(guan)在北(bei)方寒冷(leng)地區(qu)完全符合公(gong)路(lu)建設當(dang)中(zhong)的(de)(de)涵(han)洞施(shi)工(gong)(gong)(gong)要求。實踐證明,用金屬(shu)(shu)波紋(wen)(wen)(wen)涵(han)管(guan)代(dai)替(ti)金屬(shu)(shu)筋混凝土進行(xing)涵(han)洞施(shi)工(gong)(gong)(gong),無(wu)論從施(shi)工(gong)(gong)(gong)周期、施(shi)工(gong)(gong)(gong)造(zao)價、環保意義等方面都有(you)其不可比擬的(de)(de)優越性,且(qie)用金屬(shu)(shu)波紋(wen)(wen)(wen)涵(han)管(guan)進行(xing)涵(han)洞施(shi)工(gong)(gong)(gong),可大(da)(da)大(da)(da)提高道(dao)路(lu)行(xing)車(che)的(de)(de)舒適度與安全性,避免(mian)道(dao)路(lu)中(zhong)涵(han)洞的(de)(de)“錯臺跳(tiao)車(che)”現(xian)形,有(you)利(li)于解決西北(bei)地區(qu)寒冷(leng)霜凍對砼管(guan)涵(han)結構的(de)(de)破壞問題。

金(jin)屬波(bo)紋涵管(guan)出(chu)廠(chang)時,涵管(guan)及配件均(jun)經(jing)過(guo)熱(re)浸(jin)鍍鋅(xin)處理,鍍鋅(xin)層(ceng)平(ping)均(jun)厚度大于84μm,在沒有亂(luan)石沖刷(shua)的情況下,它的鍍鋅(xin)層(ceng)就可防止銹蝕(shi)(shi)。國(guo)內(nei)涵管(guan)出(chu)廠(chang)前(qian),根據鋼管(guan)管(guan)壁(bi)每年蝕(shi)(shi)耗厚度0.01-0.03mm,鑫豐(feng)產品都比(bi)國(guo)外(wai)涵管(guan)做的要保(bao)(bao)守,比(bi)正常管(guan)壁(bi)厚度增(zeng)加了(le)0.5mm,可提高使用(yong)壽命,而且涵管(guan)運(yun)至施工(gong)現場后(hou),工(gong)地涂(tu)涮(shuan)兩遍瀝青,瀝青涂(tu)層(ceng)厚度達到(dao)0.3-0.5mm,并(bing)且根據國(guo)內(nei)車輛超載運(yun)輸的實際情況還(huan)對(dui)金(jin)屬波(bo)紋涵管(guan)的技術參數(波(bo)距、波(bo)深、壁(bi)厚)進行(xing)了(le)調整,增(zeng)大了(le)涵管(guan)在國(guo)內(nei)使用(yong)的保(bao)(bao)險系數。

實踐(jian)證明,用金屬(shu)(shu)波紋涵(han)(han)管(guan)代(dai)替金屬(shu)(shu)筋混凝土進行(xing)涵(han)(han)洞(dong)(dong)施(shi)(shi)工,無論從施(shi)(shi)工周期(qi)、施(shi)(shi)工造價、環保(bao)意義等方面都(dou)有(you)其不可比擬(ni)的(de)優越性(xing),且(qie)用金屬(shu)(shu)波紋涵(han)(han)管(guan)進行(xing)涵(han)(han)洞(dong)(dong)施(shi)(shi)工,可大大提高道路行(xing)車的(de)舒適度與安全性(xing),避免道路中(zhong)涵(han)(han)洞(dong)(dong)的(de)“錯(cuo)臺跳車”現形,有(you)利于(yu)解決西北地區寒冷霜(shuang)東對砼管(guan)涵(han)(han)結構的(de)破(po)壞(huai)問題。

以上幾種措施即可滿足(zu)使(shi)用(yong)要求,使(shi)用(yong)壽命完全能(neng)適合公(gong)路的(de)(de)(de)(de)需求,更能(neng)滿足(zu)受流石(shi)沖刷(shua)的(de)(de)(de)(de)涵洞,確保流石(shi)對涵管(guan)管(guan)壁的(de)(de)(de)(de)沖擊(ji)。金(jin)屬波紋(wen)涵管(guan)的(de)(de)(de)(de)剛(gang)度(du)計算,波紋(wen)管(guan)的(de)(de)(de)(de)剛(gang)度(du)按照載荷及位移性質不(bu)同,分(fen)為軸(zhou)向剛(gang)度(du)、彎曲剛(gang)度(du)、扭轉剛(gang)度(du)等。目前在波紋(wen)管(guan)的(de)(de)(de)(de)應用(yong)中(zhong),絕大多(duo)數的(de)(de)(de)(de)受力(li)情(qing)況是軸(zhou)向載荷,位移方式為線位移。

公(gong)(gong)路工(gong)程的涵(han)(han)(han)(han)洞一般采(cai)用金(jin)(jin)屬筋(jin)混凝土(tu)制作。現采(cai)用金(jin)(jin)屬波紋涵(han)(han)(han)(han)管(guan)(guan)代(dai)替金(jin)(jin)屬筋(jin)混凝土(tu)進行涵(han)(han)(han)(han)洞施工(gong)在國內時-項新技術,金(jin)(jin)屬波紋涵(han)(han)(han)(han)管(guan)(guan)以其性能穩定、安裝方便、有(you)利環保、造價(jia)低等優點(dian)迅速在公(gong)(gong)路施工(gong)中代(dai)替了(le)金(jin)(jin)屬筋(jin)混凝土(tu)施工(gong)的涵(han)(han)(han)(han)洞,發(fa)展前景(jing)非常廣闊。

1990年(nian),日本高速(su)公路設計(ji)(ji),規(gui)范制定(ding)了(le)波紋管涵(han)設計(ji)(ji)技術(shu)規(gui)范。隨著鋼(gang)波紋(wen)涵(han)管在世界各(ge)地的安裝使用,證明了(le)此種(zhong)結構在各(ge)種(zhong)使用情況下的通用性。在我(wo)國(guo)改革(ge)開(kai)放后,深圳及大同煤礦開(kai)始從國(guo)外進口成(cheng)品波紋管(guan)涵進行(xing)涵洞(dong)施(shi)工。

波(bo)紋板(ban)(ban)內(nei)襯之間(jian)(jian)現場采用(yong)高(gao)強螺栓拼(pin)接,波(bo)紋板(ban)(ban)加(jia)(jia)固(gu)結構與既有(you)隧道壁(bi)(bi)之間(jian)(jian)灌注自密實混凝土,施I速度相當快,加(jia)(jia)固(gu)效果相當好。加(jia)(jia)固(gu)在夜間(jian)(jian)進行，不中斷鐵路(lu)交(jiao)通,值得推廣應用(yong)。方案缺點是對隧道的(de)(de)凈寬(kuan)和(he)凈高(gao)有(you)一定壓縮。其實，鋼波(bo)紋板(ban)(ban)結構在國內(nei)其他的(de)(de)工程上有(you)很多應用(yong),壁(bi)(bi)如(ru)公路(lu)涵洞通道,軟土地區(qu)的(de)(de)涵洞通道,城市綜合(he)管廊上也(ye)有(you)少量應用(yong)。

金(jin)屬波紋涵管是(shi)將(jiang)薄金(jin)屬板板面壓(ya)成波紋后,卷制成管節,可以增加管節的剛度和(he)對管軸壓(ya)力的抵抗強度;出廠前采用(yong)(yong)(yong)熱浸鍍鋅工(gong)藝和(he)施工(gong)現場噴涂瀝青(qing),雙(shuang)層防腐處理(li)保證了使用(yong)(yong)(yong)壽命;用(yong)(yong)(yong)此(ci)種管節修建的涵洞被稱為波紋金(jin)屬管涵。

之后，上(shang)海(hai)市公(gong)路(lu)管理處上(shang)海(hai)市政(zheng)工程設(she)計(ji)研究院上(shang)海(hai)同(tong)濟大學對(dui)金屬波紋涵(han)管進行了動、靜載(zai)試驗,結果(guo)表(biao)明能滿足設(she)計(ji)使用要求,埴(zhi)補了國內的(de)空白(bai),且迅速得到推廣應(ying)(ying)用。幕(mu)墻一貫(guan)反應(ying)(ying)用于我國各地公(gong)路(lu)設(she)施建設(she)當中。

在公(gong)路(lu)施工中，應用金屬波紋(wen)涵管(guan)代替金屬筋混凝土(tu)進行(xing)涵洞(dong)施工的歷史已(yi)經有(you)100多年了。1896年,美(mei)國率行(xing)波紋(wen)管(guan)涵通(tong)道、涵管(guan)的可行(xing)性研(yan)究。后，在美(mei)國、加拿大(da)、澳大(da)利亞(ya)等國的公(gong)路(lu)建(jian)設中,均采用了金屬波紋(wen)涵管(guan)進行(xing)涵洞(dong)的施工。鋼波紋(wen)涵管(guan)網(wang)址：hanihanbj.com