鋼波紋管和高強(qiáng)度螺栓、螺母,出廠前有必要進(jìn)行熱鍍鋅防腐處理。每走一批貨都查驗(yàn)并附產(chǎn)品合格證。施工準(zhǔn)備施工所需鋼波紋管由工廠規(guī)范化消費(fèi)后運(yùn)送施工現(xiàn)場(chǎng),間斷現(xiàn)場(chǎng)拼裝,管節(jié)設(shè)備位終了后回填。整個(gè)流程包含:根底的開(kāi)挖、現(xiàn)場(chǎng)的拼裝、回填三個(gè)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?yàn)榫砗玫慕饘俨y涵管長(zhǎng)度較長(zhǎng),體積較大,一般是工程單位向廠方提規(guī)格、數(shù)量,由廠方帶設(shè)備及材料到施工現(xiàn)場(chǎng)加工。這樣既可大大減少波紋管的損耗(短頭、碰傷、銹蝕等),又能滿足需方的各項(xiàng)要求,并節(jié)約經(jīng)費(fèi)。金屬波紋管現(xiàn)場(chǎng)卷制好后。
應(yīng)存放在千燥場(chǎng)所,下面用檔距為1.6m的木板多檔架空,上面掩蓋防雨油布等隱瞞物,堆積高度不宜超越7m。與圓管涵比較,波紋管涵的管側(cè)水平位移、撓度和對(duì)路途的擾動(dòng)小,有利于維護(hù)路面。管內(nèi)切向與軸向應(yīng)力應(yīng)變以及撓度和大等效應(yīng)力在恒載作用時(shí)隨填土高度的增加有呈線性增加的規(guī)則。
活載作用時(shí)隨填土的高度增加逐漸減?。豢傮w上切向應(yīng)變力應(yīng)變大值大于軸向大值;管頂以切向應(yīng)變?yōu)橹?。金屬波紋管在運(yùn)送、裝卸過(guò)程中,都要分外留神。不能翻滾或磕碰硬物,防止波紋管壁變形或損傷鍍鋅層。
鋼波紋管的運(yùn)送與設(shè)備鋼波紋管通常選用工廠規(guī)范化消費(fèi),出廠時(shí)已間斷鍍鋅處置。用汽車(chē)運(yùn)送工地后,卸貨時(shí)不可直接翻拉,使用吊車(chē)合作人工間斷裝卸,防止損壞鍍鋅層。操作關(guān)鍵運(yùn)到工地后,有必要每塊查看尺度,并從金屬波紋管中隨機(jī)抽取一片板件、高強(qiáng)螺栓。
然后進(jìn)行尺度、防腐、強(qiáng)度等項(xiàng)目的查驗(yàn)。查驗(yàn)數(shù)據(jù)應(yīng)滿足相關(guān)要求。施工放樣涵洞施工前要片面熟諳規(guī)劃文件和規(guī)劃技術(shù)交底,現(xiàn)場(chǎng)核對(duì)涵洞的立體位置和角度,如有成績(jī)及時(shí)提出,施工便道建筑結(jié)束并能滿足施工需求。http://strive2win.com/
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