為保證中間不留空隙,應(ying)在(zai)兩接(jie)頭(tou)端(duan)頭(tou)處做(zuo)好標(biao)記。做(zuo)好后要用膠(jiao)帶包裹嚴密,以(yi)防(fang)漏(lou)漿(jiang)。能解決北方寒冷(leng)地區(霜凍)對橋梁和管涵(han)砼(tong)結構(gou)(gou)的(de)破壞問題,使路(lu)(lu)表(biao)面沒有(you)伸縮縫,提高(gao)行車舒適性(xing),有(you)利于改善(shan)軟(ruan)土地基(ji)結構(gou)(gou)與路(lu)(lu)堤交界處的(de)[錯臺(tai)"現象,提高(gao)行車性(xing),鋼(gang)波(bo)紋涵管的工后(hou)營運(yun),養護(hu)成本低,工程實際造價也(ye)低于同類跨(kua)徑的橋(qiao)梁.拆模時注意保(bao)護(hu)端(duan)頭處外(wai)漏的波紋管(guan)。
公路鋼(gang)波紋涵管有效(xiao)提升行車的舒適(shi)性(xing)
澆(jiao)筑砼時,不(bu)能對(dui)著(zhu)波(bo)紋(wen)(wen)(wen)管(guan)放料。振(zhen)搗(dao)棒(bang)不(bu)能與波(bo)紋(wen)(wen)(wen)管(guan)碰撞,嚴禁兩個振(zhen)搗(dao)棒(bang)夾(jia)著(zhu)一根波(bo)紋(wen)(wen)(wen)管(guan)振(zhen)搗(dao)。特別是腹板(ban)振(zhen)搗(dao)時,嚴禁振(zhen)搗(dao)棒(bang)在同一位置長時間振(zhen)搗(dao),振(zhen)搗(dao)時間以不(bu)超過20秒為準。波(bo)紋(wen)(wen)(wen)管(guan)接頭(tou)的(de)方法:波(bo)紋(wen)(wen)(wen)管(guan)接頭(tou)處要(yao)外包0.3米長的(de)大號波(bo)紋(wen)(wen)(wen)管(guan),并且(qie)兩端頭(tou)要(yao)對(dui)半擰緊,中(zhong)間不(bu)得留有空隙。
內徑100毫米金屬波(bo)紋管(guan)圓(yuan)管(guan)
對比(bi)鋼(gang)筋砼(tong)拱(gong)涵,鋼(gang)波(bo)紋(wen)(wen)管(guan)涵具有以(yi)下優(you)勢:對地基(ji)要(yao)求低,由于鋼(gang)波(bo)紋(wen)(wen)管(guan)涵為(wei)柔性結構(gou)物,其基(ji)礎一般也為(wei)柔性基(ji)礎,涵洞基(ji)底的沉降和兩(liang)側路基(ji)的沉降是均勻的,所以(yi)在(zai)涵洞構(gou)筑時不必單獨對鋼(gang)波(bo)紋(wen)(wen)管(guan)的基(ji)底進行處理.切割波(bo)紋(wen)(wen)管(guan)要(yao)平直,不能切成斜口。
搬(ban)運(yun)到現場的(de)波(bo)(bo)紋(wen)(wen)管(guan)(guan)要(yao)(yao)集中堆放整齊(qi),不能(neng)在波(bo)(bo)紋(wen)(wen)管(guan)(guan)上(shang)踩踏。波(bo)(bo)紋(wen)(wen)管(guan)(guan)要(yao)(yao)覆蓋保護,防止風吹雨淋使其(qi)提前老化(hua)。考(kao)慮(lv)到頂(ding)板波(bo)(bo)紋(wen)(wen)管(guan)(guan)數量在逐(zhu)漸減(jian)少,但凡與波(bo)(bo)紋(wen)(wen)管(guan)(guan)沖(chong)突的(de)部件都要(yao)(yao)避讓波(bo)(bo)紋(wen)(wen)管(guan)(guan)。每道厚約1.5mm,瀝青涂抹需在回填之(zhi)前進行,該(gai)措施也可增強涵(han)(han)洞的(de)防水功能(neng),對腐蝕(shi)及沖(chong)刷(shua)較為嚴重的(de)場合(he),除在外(wai)壁(bi)增加2道熱涂瀝青層外(wai),可考(kao)慮(lv)在管(guan)(guan)內壁(bi)包裹一層C25細石砼,更(geng)能(neng)加強涵(han)(han)洞受水流沖(chong)刷(shua)的(de)能(neng)力.
焊接鋼(gang)筋(jin)靠近(jin)波(bo)紋(wen)管(guan)(guan)(guan)時,要(yao)采取措施保護波(bo)紋(wen)管(guan)(guan)(guan)不(bu)能被灼(zhuo)傷(shang),如果不(bu)小(xiao)心被灼(zhuo)傷(shang)到(dao)(dao),灼(zhuo)傷(shang)處(chu)要(yao)用膠帶包裹嚴密。波(bo)紋(wen)管(guan)(guan)(guan)位置定(ding)(ding)位要(yao)準確,尤(you)其是靠近(jin)接頭的(de)(de)部位,波(bo)紋(wen)管(guan)(guan)(guan)定(ding)(ding)位鋼(gang)筋(jin)間距為0.5米(mi),不(bu)能缺少。該文例舉的(de)(de)鋼(gang)波(bo)紋(wen)管(guan)(guan)(guan)涵平(ping)均每延米(mi)的(de)(de)造(zao)價(jia)比(bi)同等(deng)規格(ge)的(de)(de)拱涵低3000元左右,而高填(tian)方的(de)(de)路(lu)段往(wang)往(wang)涵洞(dong)較長,因此,采用鋼(gang)波(bo)紋(wen)管(guan)(guan)(guan)涵能夠節(jie)約較多造(zao)價(jia),若考慮到(dao)(dao)鋼(gang)波(bo)紋(wen)管(guan)(guan)(guan)涵的(de)(de)施工(gong)便利以(yi)及地基處(chu)理等(deng)方面可能節(jie)約的(de)(de)成本,則其經濟性更(geng)為可觀(guan).(hanihanbj.com)
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