在鋼波紋涵管施(shi)(shi)(shi)工(gong)上要(yao)重點控(kong)制(zhi)波紋(wen)(wen)管涵楔(xie)形(xing)部(bu)及兩(liang)側的(de)回(hui)填(tian)(tian)施(shi)(shi)(shi)工(gong)。由于金屬波紋(wen)(wen)涵管是(shi)一種(zhong)柔性結構,它建成后與附近(jin)回(hui)填(tian)(tian)材料形(xing)成一種(zhong)組(zu)合結構,共同受力,假(jia)如(ru)回(hui)填(tian)(tian)不密實或(huo)有楔(xie)形(xing)部(bu)中空,將泛起(qi)局(ju)部(bu)有較大變形(xing),存在安全隱患,嚴峻的(de)將造(zao)成質(zhi)(zhi)量(liang)事故。為確保(bao)該涵洞的(de)施(shi)(shi)(shi)工(gong)質(zhi)(zhi)量(liang),項目部(bu)邀請了(le)技術(shu)(shu)指導(dao),組(zu)織技術(shu)(shu)、施(shi)(shi)(shi)工(gong)職(zhi)(zhi)員進行專項培訓學習,并要(yao)求施(shi)(shi)(shi)工(gong)過程中技術(shu)(shu)職(zhi)(zhi)員施(shi)(shi)(shi)工(gong)全過程跟蹤指導(dao)功課,做到(dao)(dao)施(shi)(shi)(shi)工(gong)質(zhi)(zhi)量(liang)管控(kong)到(dao)(dao)位,有效確保(bao)了(le)鋼管波紋(wen)(wen)管涵在神佳米(mi)高速(su)公路運(yun)營安全。
為何說在鋼波紋涵管施工上要重點控制波紋管涵楔形部?
通過波(bo)(bo)紋(wen)(wen)涵(han)管(guan)在(zai)我項目(mu)(mu)部的應用(yong),總結得出(chu)鋼波(bo)(bo)紋(wen)(wen)管(guan)比混凝土(tu)涵(han)工(gong)(gong)效高、周期短,工(gong)(gong)藝簡(jian)樸(pu)、可操縱性強,工(gong)(gong)廠(chang)化加工(gong)(gong)、質(zhi)量(liang)輕易控制。目(mu)(mu)前(qian)鋼波(bo)(bo)紋(wen)(wen)涵(han)管(guan)一般合用(yong)于(yu)(yu)風(feng)積沙以及(ji)軟(ruan)土(tu)地(di)(di)區,它即可以解決因地(di)(di)基基礎不(bu)(bu)平均沉(chen)降導致的涵(han)洞破壞題目(mu)(mu),又可以更大(da)程(cheng)度上分散荷載的效應,更好(hao)地(di)(di)施(shi)展鋼結構(gou)的上風(feng)。它不(bu)(bu)僅具有管(guan)壁薄(bo),重量(liang)輕,便(bian)于(yu)(yu)運輸和存(cun)放,施(shi)工(gong)(gong)工(gong)(gong)藝簡(jian)樸(pu),現場安(an)裝利便(bian)、快速,工(gong)(gong)期短等長處(chu),也能很好(hao)地(di)(di)解決地(di)(di)基不(bu)(bu)平均沉(chen)降及(ji)嚴寒地(di)(di)區天氣對混凝土(tu)涵(han)結構(gou)造成破壞的題目(mu)(mu)。按照混凝土(tu)涵(han)正(zheng)常施(shi)工(gong)(gong)來統計,施(shi)工(gong)(gong)時間(jian)為30左右天,可采用(yong)鋼波(bo)(bo)紋(wen)(wen)涵(han)管(guan)僅需(xu)要8天。同(tong)時,不(bu)(bu)僅在(zai)時間(jian)上節約,而(er)且在(zai)本錢上也節約。
為(wei)(wei)保證路(lu)基施(shi)工(gong)(gong)目(mu)(mu)標(biao)的(de)兌現(xian)完(wan)畢(bi),涵(han)洞施(shi)工(gong)(gong)直接影響(xiang)路(lu)基工(gong)(gong)期(qi),項目(mu)(mu)部一幫(bang)技術(shu)職(zhi)員在(zai)項目(mu)(mu)總工(gong)(gong)的(de)帶領下(xia)(xia),以(yi)(yi)項目(mu)(mu)所轄施(shi)工(gong)(gong)管段地質地貌為(wei)(wei)參照依據(ju),力(li)求(qiu)在(zai)時間、在(zai)功效上,鼎力(li)攻克(ke)用新工(gong)(gong)藝施(shi)工(gong)(gong)代替(ti)砼(tong)涵(han)洞,采取(qu)召(zhao)開專題會,技術(shu)分析會和觀摩會等(deng)形式(shi),以(yi)(yi)走出去的(de)模式(shi)鼎力(li)尋求(qiu)新的(de)施(shi)工(gong)(gong)工(gong)(gong)藝。通(tong)(tong)過與業主(zhu)、設計和指揮部等(deng)單位(wei)積極的(de)溝通(tong)(tong)和爭取(qu),終于確(que)定在(zai)我項目(mu)(mu)部進行(xing)鋼(gang)波紋(wen)管涵(han)試驗,以(yi)(yi)確(que)定結構設計、使用功能(neng)、施(shi)工(gong)(gong)周期(qi)和本錢等(deng)是否知足要求(qiu)。,在(zai)多方(fang)單位(wei)共同(tong)見證下(xia)(xia)---定論以(yi)(yi)鋼(gang)管波紋(wen)管涵(han)代替(ti)風積沙路(lu)段暗(an)涵(han)施(shi)工(gong)(gong),并予以(yi)(yi)全線推廣(guang)使用。
焊(han)接鋼(gang)筋(jin)挨(ai)近(jin)波(bo)紋(wen)管(guan)涵(han)(han)時(shi),要(yao)采用方法保護(hu)波(bo)紋(wen)管(guan)涵(han)(han)不(bu)得被燒傷,如不(bu)到灼傷,灼傷處要(yao)用膠帶包裹嚴密。考慮到頂板波(bo)紋(wen)管(guan)涵(han)(han)數目逐(zhu)步削減,但凡與(yu)波(bo)紋(wen)管(guan)涵(han)(han)沖(chong)突(tu)的不(bu)見都(dou)要(yao)逃避波(bo)紋(wen)管(guan)涵(han)(han)。澆(jiao)筑砼時(shi),制(zhi)止(zhi)對著(zhu)(zhu)波(bo)紋(wen)管(guan)涵(han)(han)斜放,拌(ban)(ban)和棒(bang)制(zhi)止(zhi)與(yu)波(bo)紋(wen)管(guan)涵(han)(han)觸碰,制(zhi)止(zhi)兩個(ge)拌(ban)(ban)和棒(bang)夾著(zhu)(zhu)一(yi)根波(bo)紋(wen)管(guan)涵(han)(han)拌(ban)(ban)和。特(te)別(bie)是腹板拌(ban)(ban)和時(shi),制(zhi)止(zhi)拌(ban)(ban)和棒(bang)在統一(yi)個(ge)當地長時(shi)間拌(ban)(ban)和,拌(ban)(ban)和時(shi)間不(bu)得超越20秒。
波(bo)紋(wen)管(guan)涵(han)接頭的(de)方法:波(bo)紋(wen)管(guan)涵(han)接頭處要(yao)外包(bao)0.3米長得大號波(bo)紋(wen)管(guan)涵(han),并且兩(liang)端(duan)頭要(yao)對半擰緊,基地不(bu)得留(liu)有(you)空(kong)位。為保證基地不(bu)留(liu)空(kong)位,應在(zai)兩(liang)接頭端(duan)處做好(hao)記號,做好(hao)后要(yao)膠帶包(bao)裹嚴密。以防(fang)漏漿(jiang)。波(bo)紋(wen)管(guan)涵(han)方位定位要(yao)精準,尤(you)其是挨近接頭的(de)部位,波(bo)紋(wen)管(guan)涵(han)定位鋼筋距(ju)離為0.5米,不(bu)得短(duan)少。
鋼波紋涵管的(de)后(hou)期(qi)保護怎樣處理(li)嚴(yan)肅(su)操控進(jin)場波(bo)紋(wen)(wen)管涵(han)(han)的(de)原料質量,進(jin)到現場的(de)波(bo)紋(wen)(wen)管涵(han)(han)要會合堆放(fang)規(gui)整,工人不(bu)得在波(bo)紋(wen)(wen)管涵(han)(han)上(shang)轔轢。波(bo)紋(wen)(wen)管涵(han)(han)要掩蓋保護,防止(zhi)風吹雨淋使其提早老(lao)化。切(qie)開(kai)波(bo)紋(wen)(wen)管涵(han)(han)要平直,制止(zhi)切(qie)成斜(xie)口。
波紋(wen)管(guan)(guan)(guan)(guan)涵(han)的定義:波紋(wen)管(guan)(guan)(guan)(guan)涵(han)是與鋼筋混(hun)凝土(tu)管(guan)(guan)(guan)(guan)涵(han)比擬,具有(you)管(guan)(guan)(guan)(guan)節(jie)(jie)薄,重量輕,便(bian)于(yu)運輸存放,施工(gong)工(gong)藝簡樸,組(zu)裝快速,工(gong)期短(duan)等長處。建(jian)筑波紋(wen)管(guan)(guan)(guan)(guan)時,可根據(ju)需要(yao)隨(sui)意組(zu)裝成(cheng)任何長度(du),必要(yao)時,管(guan)(guan)(guan)(guan)節(jie)(jie)還可以拆除,遷(qian)往別處修建(jian),在缺乏砂石材料(liao)地區(qu)或地基承載力較低(di)的地區(qu),波紋(wen)管(guan)(guan)(guan)(guan)涵(han)的優勝性更為(wei)明(ming)顯(xian)。
波(bo)紋(wen)管(guan)涵(han)(han)也叫金屬波(bo)紋(wen)管(guan)涵(han)(han)或鋼制(zhi)波(bo)紋(wen)管(guan)涵(han)(han),是(shi)指鋪埋(mai)在公路(lu),鐵路(lu)下面的涵(han)(han)洞用(yong)螺紋(wen)波(bo)紋(wen)管(guan),它是(shi)由(you)波(bo)形金屬板卷制(zhi)成(cheng)(cheng)或用(yong)半圓波(bo)形鋼片拼制(zhi)成(cheng)(cheng)的圓形波(bo)紋(wen)管(guan),用(yong)于公路(lu),鐵路(lu),小橋,通(tong)道(dao),擋土墻,以(yi)及各種礦場,巷道(dao)擋墻支護(hu)等(deng)工程的涵(han)(han)洞(管(guan))。
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