鋼波紋管的(de)(de)波紋結構可使涵(han)洞(dong)路(lu)面受力(li)合理,荷載散布均勻(yun),并(bing)具(ju)有必(bi)定的(de)(de)抗變形才能,能解(jie)決北(bei)方寒冷地區(霜凍)對橋梁和管(guan)涵(han)砼(tong)結構的(de)(de)破壞問(wen)題;使路(lu)外表(biao)沒有伸(shen)縮(suo)縫,進步(bu)行(xing)車舒服。并(bing)且也(ye)有利于(yu)改進軟土地基結構與路(lu)堤交(jiao)界(jie)處的(de)(de)“錯臺”現象,進步(bu)行(xing)車的(de)(de)安全性。
鋼(gang)波紋(wen)管(guan)(guan)涵(han)的工后營運、維護成(cheng)本低,工程實(shi)際造價(jia)也低于同類跨徑的橋梁、涵(han)洞(dong)。金(jin)屬(shu)波紋(wen)管(guan)(guan)涵(han)也叫波紋(wen)管(guan)(guan)涵(han),是指(zhi)鋪(pu)埋在(zai)公(gong)路、鐵路路下(xia)的涵(han)洞(dong)用(yong)的螺紋(wen)波紋(wen)管(guan)(guan),它是由波形鋼(gang)板卷制成(cheng)或用(yong)波形鋼(gang)片(pian)組(zu)拼(pin)成(cheng)的圓(yuan)形鋼(gang)結構(gou)管(guan)(guan)。
The operation and maintenance cost of steel corrugated pipe culvert after construction is low, and the actual cost of the project is also lower than that of bridges and culverts with the same span. Metal corrugated pipe culvert, also called corrugated pipe culvert, refers to the threaded corrugated pipe used for Culverts buried under roads and railways. It is a circular steel structure pipe made of corrugated steel plate or assembled with corrugated steel sheet.
應用于公路(lu),鐵路(lu),小橋,通道,擋土墻以及各種礦場,巷(xiang)道擋墻支(zhi)護等工程中的(de)(de)(de)涵洞(管)。當鋼制波紋管涵處(chu)于軟土地基上(shang)時,需對(dui)軟土路(lu)基進行處(chu)理,然后(hou),在其上(shang)填一層(ceng)大于20cm厚(hou)的(de)(de)(de)砂礫墊層(ceng),并夯實嚴(yan)密。承載才(cai)能不(bu)太(tai)高的(de)(de)(de)一般地基,需設(she)必定厚(hou)度的(de)(de)(de)根底。
可是,若將涵管底基槽(cao)原狀(zhuang)土經(jing)嚴厲(li)夯實(其夯實度到重(zhong)型擊實密實度的90%以上(shang))以后,也可直(zhi)接將鋼制波紋管涵置于(yu)地基上(shang)。未經(jing)篩分的砂(sha),碎(sui)石(shi)(shi),砂(sha)礫土以及砂(sha)質(zhi)土都(dou)是比較理想的地基材料,但需鏟除10cm以上(shang)的石(shi)(shi)塊等(deng)硬物。
鋼制波紋管涵不能直接置于巖石或混凝土基床上,因過于剛性的支承,不但會降低管壁本身所具有的突出柔性,并且還會減小涵管的承載才能。所以對巖石地基應挖掉一部分軟巖,換填一層土,并仔細夯實。開挖軟巖溝槽,不能使用烈性炸藥和放深孔炮,以防止將過多的外層炸松懈。巖石風化層地基不能作為根底,需換填上3D寬度的填土。//hanihanbj.com/
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