鋼波紋管和高強(qiang)度螺(luo)栓、螺(luo)母,出廠(chang)(chang)前(qian)有必要進行熱(re)鍍鋅防腐處理。每走一批(pi)貨都查驗并(bing)附(fu)產品(pin)合格證。施(shi)(shi)(shi)工(gong)準(zhun)備(bei)施(shi)(shi)(shi)工(gong)所(suo)需鋼波紋管(guan)由工(gong)廠(chang)(chang)規(gui)范化消費后運送施(shi)(shi)(shi)工(gong)現(xian)場(chang)(chang),間斷現(xian)場(chang)(chang)拼裝(zhuang),管(guan)節設備(bei)位終(zhong)了后回填。整個(ge)流程包含:根底(di)的(de)開挖、現(xian)場(chang)(chang)的(de)拼裝(zhuang)、回填三個(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加工。這樣既可大(da)大(da)減少波紋管的損耗(hao)(短頭、碰(peng)傷、銹(xiu)蝕(shi)等),又(you)能(neng)滿足需(xu)方的各項要求,并節(jie)約經費。金(jin)屬波紋管現場卷制好后(hou)。
應(ying)存(cun)放在千燥場所,下面(mian)用檔距為1.6m的木板多檔架空,上面(mian)掩蓋(gai)防雨油布等(deng)隱瞞(man)物,堆積高度(du)不宜超越7m。與圓管涵比較,波紋(wen)管涵的管側(ce)水平(ping)位移、撓度(du)和(he)對路途的擾動(dong)小,有(you)(you)利于維護路面(mian)。管內切向(xiang)(xiang)與軸(zhou)向(xiang)(xiang)應(ying)力應(ying)變以及撓度(du)和(he)大等(deng)效應(ying)力在恒載作用時隨填土(tu)高度(du)的增(zeng)加有(you)(you)呈線性增(zeng)加的規則。
活(huo)載作用時(shi)隨填土的高度增(zeng)加逐漸減小;總體上切向應變力應變大值大于軸向大值;管(guan)頂以(yi)切向應變為主。金屬波(bo)紋管(guan)在運送(song)、裝卸過程中,都要分(fen)外留神。不(bu)能翻(fan)滾或磕碰(peng)硬物(wu),防止波(bo)紋管(guan)壁(bi)變形或損傷(shang)鍍鋅(xin)層(ceng)。
鋼波(bo)紋管(guan)的運送與設備鋼波(bo)紋管(guan)通(tong)常選用工廠規范化消費,出廠時已(yi)間(jian)斷鍍(du)鋅處置。用汽車運送工地后,卸貨時不可(ke)直接(jie)翻(fan)拉(la),使用吊車合作人(ren)工間(jian)斷裝卸,防止損壞鍍(du)鋅層。操作關鍵(jian)運到(dao)工地后,有必要每(mei)塊查看尺度,并從金屬波(bo)紋管(guan)中隨機抽取一片(pian)板(ban)件、高強(qiang)螺(luo)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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