鋼波紋管的波紋結構(gou)可(ke)使(shi)涵(han)洞(dong)路面受力合(he)理,荷載散布均勻,并(bing)具有必定的抗變形才能,能解(jie)決北方(fang)寒冷(leng)地區(霜凍)對橋梁和管涵(han)砼結構(gou)的破壞問題;使(shi)路外表(biao)沒有伸縮縫,進(jin)步(bu)行車舒(shu)服(fu)。并(bing)且(qie)也有利(li)于改進(jin)軟土地基(ji)結構(gou)與路堤(di)交界處(chu)的“錯臺”現象,進(jin)步(bu)行車的安全性。
鋼波(bo)(bo)紋(wen)管涵的(de)(de)工(gong)后營(ying)運、維護成本低(di),工(gong)程實(shi)際造價(jia)也低(di)于同類跨徑的(de)(de)橋梁、涵洞。金屬(shu)波(bo)(bo)紋(wen)管涵也叫波(bo)(bo)紋(wen)管涵,是指(zhi)鋪(pu)埋在公路、鐵(tie)路路下的(de)(de)涵洞用的(de)(de)螺紋(wen)波(bo)(bo)紋(wen)管,它是由波(bo)(bo)形鋼板卷制成或(huo)用波(bo)(bo)形鋼片組拼(pin)成的(de)(de)圓形鋼結構管。
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(yu)公路,鐵路,小橋,通道,擋土墻(qiang)以及各種(zhong)礦場,巷道擋墻(qiang)支護等工(gong)程中的(de)涵洞(dong)(管)。當鋼(gang)制波紋(wen)管涵處(chu)于(yu)軟土地(di)基(ji)上時(shi),需對軟土路基(ji)進行(xing)處(chu)理,然后,在其上填一層大(da)于(yu)20cm厚的(de)砂礫墊層,并夯(hang)實嚴密。承載才能不太高的(de)一般地(di)基(ji),需設必定厚度(du)的(de)根底。
可是,若將涵(han)管(guan)(guan)底基(ji)槽(cao)原狀土(tu)經(jing)嚴厲(li)夯實(shi)(其夯實(shi)度(du)到重型擊實(shi)密實(shi)度(du)的90%以上(shang))以后(hou),也可直接將鋼制波紋(wen)管(guan)(guan)涵(han)置于(yu)地基(ji)上(shang)。未經(jing)篩分的砂,碎石,砂礫土(tu)以及砂質土(tu)都是比(bi)較理想的地基(ji)材料,但(dan)需鏟除10cm以上(shang)的石塊等(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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