鋼波紋管和高強度螺栓、螺母,出廠前有(you)必(bi)要進行熱鍍鋅防腐處理。每走一批貨都查驗并附產品合格證。施(shi)(shi)工(gong)準備施(shi)(shi)工(gong)所需鋼波紋管由工(gong)廠規范化(hua)消費后運(yun)送施(shi)(shi)工(gong)現(xian)場(chang),間(jian)斷現(xian)場(chang)拼裝,管節(jie)設備位(wei)終了后回填。整個流程包(bao)含:根底的開挖、現(xian)場(chang)的拼裝、回填三個階段。
Before leaving factory, it is necessary to carry out hot-dip galvanizing anti-corrosion treatment for steel bellows, high-strength bolts and nuts. Every shipment is inspected and attached with product certificate. The steel bellows required for construction preparation are transported to the construction site after standardized consumption by the factory, assembled intermittently on site, and backfilled after the end of pipe joint equipment position. The whole process includes three stages: excavation of foundation, assembly on site and backfilling.
因為卷好的金屬波紋涵管長度較長,體積較大,一般是工程單位向廠方提規格、數量,由廠方帶設備及材料到施工現(xian)場(chang)加工(gong)。這樣既可大大減少波(bo)紋管(guan)的損(sun)耗(短頭、碰傷、銹(xiu)蝕等),又能滿足(zu)需方的各項要求(qiu),并節約(yue)經費。金(jin)屬波(bo)紋管(guan)現(xian)場(chang)卷制(zhi)好后。
應(ying)存放(fang)在(zai)千(qian)燥場所,下(xia)面用檔距為1.6m的(de)木板(ban)多檔架空,上面掩蓋(gai)防雨油布等(deng)隱瞞(man)物,堆積(ji)高(gao)度(du)(du)不(bu)宜超越7m。與圓管(guan)涵比較,波紋管(guan)涵的(de)管(guan)側水(shui)平位(wei)移、撓(nao)度(du)(du)和(he)對路途的(de)擾動小,有(you)利于維護路面。管(guan)內(nei)切向與軸向應(ying)力應(ying)變以(yi)及撓(nao)度(du)(du)和(he)大(da)等(deng)效應(ying)力在(zai)恒(heng)載作用時隨填(tian)土(tu)高(gao)度(du)(du)的(de)增(zeng)加有(you)呈(cheng)線(xian)性增(zeng)加的(de)規則。
活載作(zuo)用時隨填土的高度增加(jia)逐漸減小(xiao);總體上切(qie)向(xiang)應(ying)變(bian)(bian)力應(ying)變(bian)(bian)大(da)(da)值(zhi)(zhi)大(da)(da)于(yu)軸向(xiang)大(da)(da)值(zhi)(zhi);管頂以切(qie)向(xiang)應(ying)變(bian)(bian)為主。金屬(shu)波紋管在運送、裝(zhuang)卸過程中,都(dou)要(yao)分外留神。不(bu)能翻滾或(huo)磕碰硬物,防(fang)止波紋管壁(bi)變(bian)(bian)形或(huo)損傷鍍鋅層(ceng)。
鋼(gang)波紋(wen)管的運(yun)送(song)與設備(bei)鋼(gang)波紋(wen)管通(tong)常(chang)選用(yong)工(gong)(gong)廠規范化消(xiao)費,出(chu)廠時已間斷鍍(du)鋅處置(zhi)。用(yong)汽車運(yun)送(song)工(gong)(gong)地(di)后,卸貨時不(bu)可直接翻拉(la),使用(yong)吊車合作人(ren)工(gong)(gong)間斷裝(zhuang)卸,防止損壞(huai)鍍(du)鋅層。操作關鍵(jian)運(yun)到(dao)工(gong)(gong)地(di)后,有必要(yao)每(mei)塊(kuai)查看(kan)尺度(du),并從金屬波紋(wen)管中(zhong)隨機抽取一片板件、高(gao)強螺栓。
然后進行尺度、防腐、強度等項目的查驗。查驗數據應滿足相關要求。施工放樣涵洞施工前要片面熟諳規劃文件和規劃技術交底,現場核對涵洞的立體位置和角度,如有成績及時提出,施工便道建筑結束并能滿足施工需求。//hanihanbj.com/
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