鋼波紋管頂部可用(yong)高(gao)壓泵送脹大水(shui)泥(ni)沙漿(jiang)或砌(qi)筑片石脹大砼(tong),此辦法在舊橋加(jia)固(gu)工(gong)程(cheng)中取得了很好的效果。鋼波(bo)紋管(guan)涵(han)洞施(shi)工(gong)前準(zhun)備相關資(zi)料,人員(yuan)及設備出(chu)場,并做好施(shi)工(gong)時(shi)期(qi)的安全防護作業(ye),對路基(ji)邊坡進行(xing)圍(wei)網維護,避免石塊等物體下(xia)滑(hua)傷人。
大連鋼波紋管安裝效果圖看懂了嗎?
根底(di)(di)處理(li):可回填砂礫或砌筑片石(shi)砼,對基(ji)底(di)(di)進行(xing)平(ping)整,換(huan)填30-50cm厚(hou)(hou)的砂礫資(zi)料,密(mi)實度(du)到達90%以上(shang),選擇恰當(dang)的流水縱坡3%左右,定出(chu)每道涵的中線和邊(bian)線。 如(ru)果(guo)當(dang)淤(yu)(yu)泥4-6米(mi)深,填土(tu)超過10米(mi),選用(yong)清淤(yu)(yu)拋石(shi)處理(li)辦法,一(yi)般(ban)清淤(yu)(yu)深度(du)為(wei)2-4米(mi),拋石(shi)厚(hou)(hou)度(du)一(yi)般(ban)為(wei)2-3m。
讓其(qi)穩定后,選(xuan)用壓實機(ji)械壓實,為確保(bao)根(gen)底(di)整(zheng)體性,建(jian)議還要(yao)在(zai)80厘(li)米(mi)墊(dian)層中鋪設兩道土工格柵。當淤泥大于6米(mi)深(shen)時,選(xuan)用CFG基樁加固,然后在(zai)其(qi)上填一層大于80cmcqjngd.cn厚的砂(sha)礫墊(dian)層,并(bing)夯實嚴密。
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?
鋼波紋管(guan)(guan)(guan)出廠時,涵(han)管(guan)(guan)(guan)及配(pei)件(jian)均(jun)經過熱浸(jin)鍍(du)鋅處理,鍍(du)鋅層(ceng)平均(jun)厚(hou)度大(da)于84μm,在沒(mei)有亂石(shi)沖刷的狀況下,它的鍍(du)鋅層(ceng)就(jiu)可(ke)避(bi)免銹蝕。現在國內涵(han)管(guan)(guan)(guan)出廠前,依據鋼管(guan)(guan)(guan)管(guan)(guan)(guan)壁(bi)每(mei)年蝕耗(hao)厚(hou)度0.01-0.03mm,產品都比國外涵(han)管(guan)(guan)(guan)做(zuo)的要保守,比正常管(guan)(guan)(guan)壁(bi)厚(hou)度增加了(le)0.5mm,可(ke)進步(bu)運(yun)用(yong)壽命(ming),并且涵(han)管(guan)(guan)(guan)運(yun)至(zhi)施(shi)工(gong)現場后,工(gong)地涂(tu)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/
分享此文章: |