鋼制波紋涵管應(ying)用于公路養護(hu)工(gong)(gong)程(cheng)時,待涵身及洞口主體(ti)部(bu)件運至施工(gong)(gong)現場(chang)后(hou),施工(gong)(gong)單位才(cai)能開始(shi)拆除舊(jiu)涵洞的(de)工(gong)(gong)作(zuo),在拆除舊(jiu)涵洞的(de)同(tong)時,抓(zhua)緊(jin)基礎材(cai)料(liao)(liao)(liao)的(de)備(bei)料(liao)(liao)(liao)工(gong)(gong)作(zuo),備(bei)料(liao)(liao)(liao)完成,并經檢驗合格后(hou)方可進(jin)行基坑的(de)開挖(wa)工(gong)(gong)作(zuo)。金屬波(bo)紋(wen)涵管(guan)應(ying)用于新建公路工(gong)(gong)程(cheng)時,在定購涵管(guan)的(de)同(tong)時可抓(zhua)緊(jin)基礎材(cai)料(liao)(liao)(liao)的(de)備(bei)料(liao)(liao)(liao)和基坑的(de)開挖(wa)工(gong)(gong)作(zuo)。
高(gao)速公路保護(hu)路段對鋼制(zhi)波紋涵(han)管的(de)施工方(fang)法
進(jin)出口(kou)可采用由制造的金(jin)屬波紋(wen)管(guan)節,有直管(guan)和(he)與路基(ji)邊坡(po)(po)同坡(po)(po)率的斜(xie)口(kou)兩種形(xing)式;也(ye)可根據所在(zai)地(di)(di)(di)區(qu)的具體情況(kuang)采用漿砌片(pian)石或干砌片(pian)石砌筑。一般在(zai)寒冷地(di)(di)(di)區(qu),采用金(jin)屬波紋(wen)管(guan)節或干砌片(pian)石。在(zai)其與河(he)床接頭處進(jin)出口(kou)地(di)(di)(di)面及邊坡(po)(po)一定范(fan)圍內(nei)應(ying)設置雙層漿砌片(pian)石或干砌片(pian)石鋪(pu)砌,以(yi)防止沖(chong)刷。
鋼(gang)波紋涵管(guan)價格
并作必要的防(fang)滲處理;為防(fang)止路基土(tu)堵塞涵洞洞口,在洞口與路堤交(jiao)匯(hui)處做一(yi)定高度(du)和(he)(he)厚度(du)的漿砌(qi)片(pian)石(shi)(shi)或干(gan)砌(qi)片(pian)石(shi)(shi)墻(也(ye)可采用鉛絲石(shi)(shi)籠)防(fang)護(hu)。金屬(shu)波紋涵管是一(yi)種柔(rou)性(xing)結(jie)構(gou),波紋管在結(jie)構(gou)上(shang)具有(you)橫向補償位移的優(you)良特性(xing),可充分發揮鋼材抗(kang)拉性(xing)能(neng)強、變形性(xing)能(neng)優(you)越的特點,具有(you)較(jiao)大的抗(kang)變形和(he)(he)抗(kang)沉降能(neng)力,特別適合于(yu)軟土(tu)、膨脹土(tu)、濕陷性(xing)黃土(tu)等(deng)地基承載力較(jiao)低地區和(he)(he)地震多發地區
涵(han)洞(dong)兩(liang)側經過低(di)洼積(ji)水地帶時.需(xu)要(yao)先(xian)設置圍堰、抽排積(ji)水,必(bi)要(yao)時還(huan)需(xu)要(yao)清除(chu)換填部(bu)(bu)分淤泥。泥石(shi)流(liu)堆積(ji)扇或(huo)(huo)分泌砂石(shi)流(liu)量(liang)大、流(liu)速高(gao)的(de)區段。這些區段泥砂或(huo)(huo)砂石(shi)的(de)沖(chong)刷將形成對防腐材料或(huo)(huo)鋼(gang)結構的(de)腐蝕,規劃(hua)時應予以注重,必(bi)要(yao)時應對于具體情況進行防腐獨立規劃(hua);部(bu)(bu)分區段能(neng)夠存在淤積(ji)等,采用鋼(gang)波紋涵(han)管(guan)洞(dong)應思考該(gai)疑問(wen)。
由于(yu)金屬波(bo)紋(wen)涵管施(shi)工(gong)(gong)(gong)簡單(dan)且施(shi)工(gong)(gong)(gong)工(gong)(gong)(gong)期短(duan)(duan)(一(yi)般一(yi)道涵洞(dong)的施(shi)工(gong)(gong)(gong)時間(jian)在一(yi)個工(gong)(gong)(gong)作日以內),減短(duan)(duan)了多年凍(dong)土的裸露時間(jian),凍(dong)融(rong)量小,故特別適(shi)用于(yu)多年凍(dong)土地(di)區。金屬波(bo)紋(wen)涵管施(shi)工(gong)(gong)(gong)時對(dui)環(huan)境的破壞小,適(shi)用于(yu)生態環(huan)境脆弱的地(di)區。高速公路重要(yao)路段或保(bao)護艱難(nan)路段。
波紋涵(han)管(guan)洞(dong)為鋼(gang)結構,必定(ding)存在腐(fu)蝕的(de)(de)(de)威脅(xie),高速(su)公(gong)路(lu)(lu)對路(lu)(lu)基和(he)涵(han)洞(dong)的(de)(de)(de)壽數周(zhou)期(qi)(qi)需(xu)求較高,因而(er)有必要思考防腐(fu)維護(hu),在維護(hu)辦理艱(jian)難路(lu)(lu)段應慎重使(shi)用(yong)。因為鋼(gang)波紋涵(han)管(guan)洞(dong)存在必定(ding)的(de)(de)(de)使(shi)用(yong)壽數周(zhou)期(qi)(qi),在高速(su)公(gong)路(lu)(lu)的(de)(de)(de)一些重要路(lu)(lu)段應慎重思考其效勞(lao)壽數或(huo)改(gai)建的(de)(de)(de)便利等。(hanihanbj.com)
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