鋼波紋管和高(gao)強度螺(luo)栓、螺(luo)母,出(chu)廠前(qian)有必要進行熱(re)鍍鋅(xin)防腐處理。每走一批貨都查驗并附產(chan)品合格證。施工準(zhun)備施工所需鋼波紋管由工廠規(gui)范化消費后運送施工現場(chang),間斷現場(chang)拼裝(zhuang)(zhuang),管節(jie)設備位終了后回填(tian)。整個(ge)流程(cheng)包含:根底的開挖、現場(chang)的拼裝(zhuang)(zhuang)、回填(tian)三個(ge)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場(chang)加(jia)工(gong)。這樣既(ji)可大大減少波紋管的(de)損耗(hao)(短(duan)頭、碰傷、銹蝕等(deng)),又能滿足需方的(de)各項要求,并節約經費。金屬波紋管現場(chang)卷制(zhi)好后(hou)。
應存放在(zai)千燥場所,下面(mian)用(yong)檔距為(wei)1.6m的木板多檔架空,上面(mian)掩蓋防(fang)雨油布等隱瞞物,堆(dui)積高度不(bu)宜超越7m。與圓管(guan)(guan)涵(han)(han)比較,波(bo)紋管(guan)(guan)涵(han)(han)的管(guan)(guan)側水平位移、撓(nao)度和(he)(he)對(dui)路途(tu)的擾(rao)動小(xiao),有利于(yu)維(wei)護路面(mian)。管(guan)(guan)內(nei)切向與軸向應力(li)(li)應變以及撓(nao)度和(he)(he)大等效應力(li)(li)在(zai)恒載作用(yong)時隨填土高度的增加有呈線性增加的規(gui)則。
活載作(zuo)用時隨填土的(de)高(gao)度增加逐漸(jian)減小(xiao);總體上切向(xiang)應(ying)(ying)變(bian)力(li)應(ying)(ying)變(bian)大(da)值大(da)于軸向(xiang)大(da)值;管(guan)頂(ding)以切向(xiang)應(ying)(ying)變(bian)為主。金屬波紋管(guan)在運送(song)、裝卸過程中,都(dou)要(yao)分(fen)外(wai)留神。不能翻滾或磕碰硬物(wu),防止波紋管(guan)壁變(bian)形或損(sun)傷(shang)鍍鋅層(ceng)。
鋼(gang)波(bo)(bo)紋(wen)管(guan)的(de)運送(song)與(yu)設備鋼(gang)波(bo)(bo)紋(wen)管(guan)通常選用(yong)工(gong)(gong)廠(chang)規范化消(xiao)費,出(chu)廠(chang)時已間(jian)斷(duan)鍍鋅處置(zhi)。用(yong)汽車(che)運送(song)工(gong)(gong)地后,卸貨時不可直接翻拉,使用(yong)吊(diao)車(che)合作人工(gong)(gong)間(jian)斷(duan)裝卸,防止損(sun)壞鍍鋅層。操作關(guan)鍵運到工(gong)(gong)地后,有(you)必要每塊查看尺度,并從金屬波(bo)(bo)紋(wen)管(guan)中隨(sui)機抽取(qu)一片板件(jian)、高強螺栓。
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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