鋼波紋管頂部可用高壓泵送脹大水泥沙漿(jiang)或(huo)砌(qi)筑片石(shi)脹大砼,此(ci)辦法在(zai)舊橋加固(gu)工(gong)(gong)(gong)程中取得了(le)很好的(de)效果。鋼(gang)波紋管涵洞(dong)施工(gong)(gong)(gong)前準備(bei)相關(guan)資料,人(ren)員及(ji)設備(bei)出(chu)場,并做(zuo)好施工(gong)(gong)(gong)時期(qi)的(de)安(an)全防(fang)護作業,對路基邊坡進行圍網(wang)維護,避免(mian)石(shi)塊等物體(ti)下滑(hua)傷人(ren)。
大連鋼波紋管安裝效果圖看懂了嗎?
根底處(chu)理(li):可回填砂礫或砌筑片石(shi)砼,對基底進行平整,換(huan)填30-50cm厚的(de)砂礫資料,密實(shi)度(du)到達90%以上(shang),選擇恰當的(de)流水縱坡3%左右(you),定出每道涵(han)的(de)中(zhong)線和邊線。 如果當淤泥4-6米深,填土超(chao)過10米,選用清淤拋石(shi)處(chu)理(li)辦法,一(yi)般清淤深度(du)為2-4米,拋石(shi)厚度(du)一(yi)般為2-3m。
讓其穩定(ding)后,選用(yong)壓(ya)實(shi)機械(xie)壓(ya)實(shi),為確保(bao)根(gen)底整體性,建議還要在(zai)80厘米墊層(ceng)(ceng)中(zhong)鋪設兩道土(tu)工(gong)格柵。當淤(yu)泥大于6米深(shen)時,選用(yong)CFG基(ji)樁(zhuang)加固,然后在(zai)其上(shang)填一層(ceng)(ceng)大于80cmcqjngd.cn厚(hou)的(de)砂礫墊層(ceng)(ceng),并夯實(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(gang)(gang)波紋管(guan)出廠時(shi),涵(han)(han)管(guan)及配件(jian)均經(jing)過(guo)熱浸鍍(du)(du)鋅(xin)處理(li),鍍(du)(du)鋅(xin)層平均厚度大于(yu)84μm,在沒有亂石沖刷的(de)狀(zhuang)況下,它(ta)的(de)鍍(du)(du)鋅(xin)層就可避免銹蝕(shi)。現(xian)在國(guo)內涵(han)(han)管(guan)出廠前(qian),依據(ju)鋼(gang)(gang)管(guan)管(guan)壁每年蝕(shi)耗厚度0.01-0.03mm,產品都比國(guo)外涵(han)(han)管(guan)做的(de)要保守(shou),比正(zheng)常管(guan)壁厚度增(zeng)加了0.5mm,可進(jin)步(bu)運用壽(shou)命,并且涵(han)(han)管(guan)運至施工(gong)現(xian)場后(hou),工(gong)地涂涮兩遍瀝青。
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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