鋼波紋涵(han)(han)(han)管(guan)的(de)開(kai)展在咱們(men)高速公(gong)路建設過(guo)程(cheng)中,涵(han)(han)(han)洞(dong)(dong)是(shi)一(yi)種(zhong)(zhong)常見的(de)結(jie)構(gou)也是(shi)一(yi)種(zhong)(zhong)十分重要的(de)結(jie)構(gou),涵(han)(han)(han)洞(dong)(dong)結(jie)構(gou)一(yi)直選用箱(xiang)涵(han)(han)(han)、蓋(gai)板涵(han)(han)(han)、圓管(guan)涵(han)(han)(han)、拱涵(han)(han)(han)等(deng)幾(ji)種(zhong)(zhong)型式,涵(han)(han)(han)洞(dong)(dong)在施工(gong)中存在規(gui)劃繁(fan)瑣,施工(gong)時間周期長,涵(han)(han)(han)洞(dong)(dong)的(de)孔徑(jing)周期小容易呈現沉降和跳車等(deng)問題。
鋼(gang)波(bo)紋涵管(guan)的(de)資料主(zhu)要(yao)(yao)是由鋼(gang)波(bo)紋板(ban)(ban)(ban)材和強(qiang)度(du)(du)螺栓銜接組成(cheng)的(de),其(qi)間鋼(gang)質波(bo)紋板(ban)(ban)(ban)材選用國內(nei)遍(bian)及運(yun)用的(de)A3或Q235-A熱軋鋼(gang)板(ban)(ban)(ban),鋼(gang)板(ban)(ban)(ban)的(de)理化目標(biao)要(yao)(yao)求達到GB700的(de)有關(guan)要(yao)(yao)求。板(ban)(ban)(ban)的(de)尺寸(cun)和厚度(du)(du)為便于板(ban)(ban)(ban)的(de)加工制(zhi)造(zao),結構的(de)裝置銜接,進步板(ban)(ban)(ban)的(de)制(zhi)造(zao)精度(du)(du),板(ban)(ban)(ban)材的(de)尺寸(cun)宜適應不同管(guan)徑的(de)需(xu)求,以形成(cheng)系列化
鋼波紋(wen)涵管因其(qi)一同的結(jie)構,軸向波紋(wen)的結(jie)構使(shi)得它具有(you)徑向剛度大(da)、軸向柔性大(da)的特(te)征(zheng),然后有(you)了抗彎抗裂功能(neng),能(neng)很好地習氣地基的變形。而混凝土結(jie)構往往會由于嚴寒導致材(cai)(cai)料變脆,導致原有(you)涵洞呈現開(kai)裂破碎情(qing)況。施工便捷,能(neng)削(xue)(xue)減(jian)對(dui)凍土層的影響,削(xue)(xue)減(jian)對(dui)石材(cai)(cai)的開(kai)采,避(bi)免山體損壞,更加環保。
公路(lu)工(gong)程的涵洞(dong)一(yi)般選(xuan)用(yong)金(jin)屬(shu)筋混凝土(tu)制作(zuo)。現選(xuan)用(yong)金(jin)屬(shu)鋼波紋涵管替代金(jin)屬(shu)筋混凝土(tu)進行涵洞(dong)施工(gong)在(zai)國內時(shi)一(yi)項新(xin)技(ji)術(shu),金(jin)屬(shu)鋼波紋涵管以其功(gong)能穩定(ding)、裝置便利(li)、有利(li)環保、造價低等優點迅速在(zai)公路(lu)施工(gong)中替代了(le)金(jin)屬(shu)筋混凝土(tu)施工(gong)的涵洞(dong),發展前景十(shi)分寬廣。
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