供應直徑4米大口徑拼裝金屬波紋管 鋼波紋管
鋼波紋(wen)管的材(cai)料普通為青銅(tong)、黃銅(tong)、不銹(xiu)鋼、蒙乃爾合(he)金和因(yin)康鎳爾合(he)金等。鋼波紋(wen)管選用規范化設計方案,出產(chan)制作(zuo),設計方案簡易,出產(chan)制作(zuo)周(zhou)期(qi)時間短;工(gong)(gong)(gong)(gong)程(cheng)(cheng)項目(mu)具(ju)體工(gong)(gong)(gong)(gong)程(cheng)(cheng)造價比類似跨距(ju)的橋(qiao),洞(dong)低;工(gong)(gong)(gong)(gong)程(cheng)(cheng)施工(gong)(gong)(gong)(gong)短工(gong)(gong)(gong)(gong)期(qi),要害(hai)為組裝工(gong)(gong)(gong)(gong)程(cheng)(cheng)施工(gong)(gong)(gong)(gong);金屬材(cai)料波紋(wen)管替代混凝(ning)土結構展開(kai)洞(dong)工(gong)(gong)(gong)(gong)程(cheng)(cheng)施工(gong)(gong)(gong)(gong)。
鋼板(ban)鋼波紋管對基(ji)底的地基(ji)承(cheng)載(zai)力一般情況下可(ke)按以下數值參考規(gui)劃,管頂填土高度(du)h≤10m時(shi)(shi),地基(ji)承(cheng)載(zai)力不(bu)(bu)小(xiao)于(yu)180Kpa;10m≤h≤15m時(shi)(shi),地基(ji)承(cheng)載(zai)力不(bu)(bu)小(xiao)于(yu)200Kpa;15m≤h≤20m時(shi)(shi),地基(ji)承(cheng)載(zai)力不(bu)(bu)小(xiao)于(yu)220Kpa;20m≤h≤25m時(shi)(shi),地基(ji)承(cheng)載(zai)力不(bu)(bu)小(xiao)于(yu)250Kpa。
鋼波紋(wen)(wen)管涵具(ju)(ju)有(you)工(gong)期短、重量輕、安(an)裝方便、耐久性(xing)好、工(gong)程(cheng)造價(jia)低、抗變形(xing)能力強、減少通(tong)車后養護成本等(deng)特點,從材料與(yu)結構和功能的(de)本質(zhi)關系分析,采用(yong)柔(rou)性(xing)、高強度的(de)鋼波紋(wen)(wen)管涵洞,不僅具(ju)(ju)有(you)適應地(di)(di)(di)基與(yu)基礎(chu)變形(xing)的(de)能力,可(ke)以解決因地(di)(di)(di)基基礎(chu)不均勻(yun)沉降導致的(de)涵洞破壞問(wen)題(ti),而且鋼波紋(wen)(wen)管涵洞由(you)于軸向(xiang)波紋(wen)(wen)的(de)存(cun)在(zai)(zai)使其(qi)具(ju)(ju)有(you)優(you)良的(de)受力特征,軸向(xiang)和徑向(xiang)同時分布(bu)因荷載引起的(de)應力應變,可(ke)以更大程(cheng)度分散荷載的(de)應力集(ji)中,更好地(di)(di)(di)發揮鋼結構的(de)優(you)勢。尤其(qi)在(zai)(zai)高寒凍土(tu)(tu)、軟土(tu)(tu)、膨脹土(tu)(tu)、濕(shi)陷性(xing)黃土(tu)(tu)等(deng)地(di)(di)(di)帶,具(ju)(ju)有(you)明顯(xian)的(de)經濟(ji)效益。
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