鋼波紋管兩(liang)側的部(bu)位回填(tian)(tian)采(cai)用(yong)級配良好的天然砂(sha)礫(li)或與路(lu)基(ji)同材(cai)料的回填(tian)(tian)料。填(tian)(tian)筑(zhu)必須(xu)在涵管(guan)(guan)兩(liang)側同步對稱進行(xing)(xing)。鋼波紋管(guan)(guan)填(tian)(tian)筑(zhu)時(shi)應(ying)分(fen)層填(tian)(tian)筑(zhu)、分(fen)層壓(ya)實,松(song)鋪厚度(du)(du)為20cm,壓(ya)實度(du)(du)要(yao)求達到(dao)95%方(fang)可進行(xing)(xing)下層填(tian)(tian)筑(zhu)。在管(guan)(guan)身更大直徑兩(liang)側30cm外使用(yong)18T壓(ya)路(lu)機(ji)碾壓(ya),30cm范(fan)圍內使用(yong)小型夯實機(ji)械夯實,以避(bi)免壓(ya)路(lu)機(ji)等大型機(ji)械設備對鋼波紋管(guan)(guan)的撞擊。鋼波紋涵管(guan)(guan)頂部(bu)填(tian)(tian)土(tu)厚度(du)(du)大于或等于0.5m時(shi),才(cai)允許施工運輸車輛通(tong)過。對于有兩(liang)端擋墻的涵洞,回填(tian)(tian)應(ying)從兩(liang)端向結(jie)構中心進行(xing)(xing)。
整裝鋼波紋管的優缺點同樣非常明顯
鋼波紋(wen)涵管采用(yong)輕型混(hun)凝土回填(tian)。采用(yong)液態粉煤灰回填(tian)。靠近管體四周50cm范圍內(nei),不允許(xu)有(you)大于(yu)50mm的石塊(kuai)、混(hun)凝土塊(kuai)或其他有(you)害腐蝕材料。填(tian)筑時(shi)應分(fen)層填(tian)筑、分(fen)層壓(ya)實(shi),每層壓(ya)實(shi)厚度(du)為15cm,壓(ya)實(shi)度(du)要(yao)求達到(dao)設計(ji)要(yao)求后方可進(jin)行(xing)下一(yi)層填(tian)筑。采用(yong)級配良好的天然砂礫(含水量要(yao)求比更(geng)佳含水量2%左右),人工用(yong)木棒在管身(shen)外向內(nei)側進(jin)行(xing)夯(hang)實(shi),木棒作用(yong)點必須緊(jin)貼管身(shen),每個凹(ao)槽部位都(dou)必須夯(hang)實(shi)到(dao)位。
鋼波(bo)紋管(guan)兩側及頂部20米(mi)范圍內不允許使(shi)用強(qiang)夯機(ji)(ji)械(xie)。采用粗沙(sha)"水密(mi)法"振蕩器(qi)密(mi)實(shi)。更大粒徑(jing)不超過3cm的級配碎(sui)石回填。填筑(zhu)必須(xu)在波(bo)紋涵管(guan)兩側對稱同步(bu)進行,兩側的回填土高差不得大于15cm。然后用小型(xing)夯實(shi)機(ji)(ji)械(xie)斜向夯實(shi),確保管(guan)底的回填質量。如果(guo)因偏土壓(ya)造成(cheng)鋼波(bo)紋涵管(guan)變形(xing)的,應修正(zheng)截面(mian)尺寸后重新(xin)壓(ya)實(shi)。
鋼波紋管的優點:(1)涵(han)(han)管(guan)(guan)(guan)(guan)、波(bo)紋(wen)(wen)管(guan)(guan)(guan)(guan)涵(han)(han)、鋼制(zhi)波(bo)紋(wen)(wen)管(guan)(guan)(guan)(guan)涵(han)(han)洞、金屬波(bo)紋(wen)(wen)涵(han)(han)管(guan)(guan)(guan)(guan)適合地基(ji)變型有經驗強,對地基(ji)承載有經驗、平整度要求較(jiao)低(di),工(gong)(gong)程實(shi)際造價比同類跨徑的橋、涵(han)(han)洞相近或較(jiao)低(di)。(2)動工(gong)(gong)工(gong)(gong)期短是表面化的上風,土(tu)建工(gong)(gong)程與(yu)管(guan)(guan)(guan)(guan)節安(an)裝(zhuang)可(ke)分開實(shi)行。(3)施(shi)行工(gong)(gong)廠集中化生產(chan),生產(chan)不(bu)受背(bei)景(jing)影響,有匡助(zhu)減低(di)本(ben)錢(qian)、扼制(zhi)品質(zhi)。(4)涵(han)(han)管(guan)(guan)(guan)(guan)、波(bo)紋(wen)(wen)管(guan)(guan)(guan)(guan)涵(han)(han)、鋼制(zhi)波(bo)紋(wen)(wen)管(guan)(guan)(guan)(guan)涵(han)(han)洞、金屬波(bo)紋(wen)(wen)涵(han)(han)管(guan)(guan)(guan)(guan)在場安(an)裝(zhuang)便(bian)捷,不(bu)需運(yun)用大型舉(ju)措措施(shi)。
我(wo)廠生產(chan)的金屬(shu)波紋(wen)涵管(guan),嚴明依(yi)照JG/T3013-1994尺度生產(chan),應用(yong)于我(wo)國各大橋梁工程。可具備接縫(feng)堅固、無(wu)泛起裂痕、無(wu)脫扣、不滲水(shui)、不滲漿、可旋(xuan)接、承(cheng)載有經驗大等獨特(te)的地方,深受(shou)用(yong)戶(hu)的好評價。
金屬波(bo)(bo)紋(wen)涵管(guan)也叫(jiao)波(bo)(bo)紋(wen)管(guan)涵,是指鋪埋(mai)在馬(ma)路(lu)、鐵(tie)路(lu)下(xia)的(de)(de)涵洞(dong)(dong)用(yong)螺絲扣波(bo)(bo)紋(wen)管(guan),它(ta)是由波(bo)(bo)形(xing)金屬板卷制(zhi)(zhi)成或(huo)用(yong)半圓波(bo)(bo)形(xing)鋼片拼制(zhi)(zhi)成的(de)(de)圓形(xing)波(bo)(bo)紋(wen)管(guan)。應用(yong)于(yu)馬(ma)路(lu)、鐵(tie)路(lu)、小橋、通道、擋土墻以及各種礦(kuang)場(chang)巷(xiang)道擋墻支護等工程中的(de)(de)涵洞(dong)(dong)(管(guan))。
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