鋼波紋管頂部可用高壓(ya)泵送脹大(da)水泥沙漿或砌(qi)筑片石脹大(da)砼,此辦(ban)法在舊橋加固工程中取得了很好的(de)效果。鋼波紋管涵洞施(shi)工前準(zhun)備相關資料,人員及設備出(chu)場,并做好施(shi)工時期的(de)安全防護作業(ye),對(dui)路(lu)基邊(bian)坡進行圍網維護,避(bi)免石塊等物(wu)體下滑傷人。
大連鋼波紋管安裝效果圖看懂了嗎?
根(gen)底(di)處理(li):可回填砂(sha)(sha)礫或砌筑片石(shi)砼,對基底(di)進行平整,換(huan)填30-50cm厚的砂(sha)(sha)礫資料,密實度(du)(du)(du)到(dao)達(da)90%以(yi)上,選(xuan)擇恰(qia)當(dang)的流水縱坡3%左右(you),定出每道涵的中(zhong)線(xian)和(he)邊線(xian)。 如(ru)果當(dang)淤(yu)泥4-6米(mi)深(shen),填土超過10米(mi),選(xuan)用清淤(yu)拋石(shi)處理(li)辦法,一般(ban)清淤(yu)深(shen)度(du)(du)(du)為(wei)2-4米(mi),拋石(shi)厚度(du)(du)(du)一般(ban)為(wei)2-3m。
讓其穩(wen)定后,選(xuan)用壓(ya)實(shi)(shi)機(ji)械壓(ya)實(shi)(shi),為確保根底整體性,建議還要在80厘米墊層中鋪設(she)兩(liang)道土(tu)工格柵。當淤(yu)泥大(da)于6米深時,選(xuan)用CFG基(ji)樁加固,然后在其上填一層大(da)于80cmcqjngd.cn厚(hou)的砂礫墊層,并(bing)夯實(shi)(shi)嚴密。
After it is stabilized, the compaction machine shall be selected for compaction. In order to ensure the integrity of the foundation, it is recommended to lay two Geogrids in the 80cm cushion. When the silt is more than 6m deep, CFG foundation pile shall be selected for reinforcement, and then a layer of gravel cushion with a thickness of more than 80cmcqjngd.cn shall be filled and compacted tightly.
大連鋼波紋管安裝效果圖看懂了嗎?
鋼波(bo)紋管(guan)(guan)出廠(chang)時,涵(han)管(guan)(guan)及配(pei)件均(jun)經過熱浸鍍(du)鋅(xin)(xin)處理,鍍(du)鋅(xin)(xin)層平均(jun)厚(hou)度(du)大于84μm,在沒有亂石(shi)沖刷的(de)狀況(kuang)下,它(ta)的(de)鍍(du)鋅(xin)(xin)層就可(ke)避(bi)免(mian)銹蝕。現(xian)(xian)在國內涵(han)管(guan)(guan)出廠(chang)前,依(yi)據鋼管(guan)(guan)管(guan)(guan)壁(bi)每年蝕耗厚(hou)度(du)0.01-0.03mm,產品都比國外涵(han)管(guan)(guan)做的(de)要保(bao)守,比正常(chang)管(guan)(guan)壁(bi)厚(hou)度(du)增加了0.5mm,可(ke)進步(bu)運(yun)用壽(shou)命,并且(qie)涵(han)管(guan)(guan)運(yun)至施(shi)工(gong)現(xian)(xian)場后,工(gong)地涂涮兩遍(bian)瀝青。
根底做好后,上下游的片石砌筑高度和沙礫根底上頂面標高共同即可,開端組裝波紋管,在管體裝置就位結束后,可以采納不砌筑端墻,而將波紋涵管的填土填至路頂面標高十五日后再砌筑端墻。也就是波紋管停止了管壁的變形后。//hanihanbj.com/
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