鋼波紋管涵(han)洞的施工(gong)(gong)(gong)(gong)(gong)主要有以(yi)下(xia)特點(dian):首先,其(qi)(qi)施工(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)藝流程(cheng)較為特殊,在施工(gong)(gong)(gong)(gong)(gong)前要進(jin)行以(yi)下(xia)工(gong)(gong)(gong)(gong)(gong)作:施工(gong)(gong)(gong)(gong)(gong)前預(yu)備、施工(gong)(gong)(gong)(gong)(gong)放樣、設置(zhi)圍堰、排(pai)水(shui)(shui)清(qing)淤以(yi)及平整場(chang)地等。在施工(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)作中要對(dui)其(qi)(qi)壓(ya)(ya)實(shi)度、含(han)水(shui)(shui)量(liang)進(jin)行檢(jian)(jian)測(ce)(ce)(ce)(ce),接著(zhu)對(dui)水(shui)(shui)準進(jin)行丈量(liang),基于此(ci),對(dui)施工(gong)(gong)(gong)(gong)(gong)基礎進(jin)行分層回填(tian),檢(jian)(jian)測(ce)(ce)(ce)(ce)壓(ya)(ya)實(shi)度、含(han)水(shui)(shui)量(liang)等,接著(zhu)要拼裝管(guan)節,對(dui)工(gong)(gong)(gong)(gong)(gong)程(cheng)的密水(shui)(shui)情況及管(guan)底縱(zong)坡進(jin)行檢(jian)(jian)測(ce)(ce)(ce)(ce),并(bing)對(dui)防(fang)腐涂(tu)層進(jin)行檢(jian)(jian)測(ce)(ce)(ce)(ce)與補救。施工(gong)(gong)(gong)(gong)(gong)的樞(shu)紐的環節就是將(jiang)涵(han)管(guan)進(jin)行就位,將(jiang)涵(han)管(guan)兩側進(jin)行分層回填(tian),并(bing)要檢(jian)(jian)測(ce)(ce)(ce)(ce)壓(ya)(ya)實(shi)度、含(han)水(shui)(shui)量(liang)等,后進(jin)出(chu)口(kou)處(chu)理(li)工(gong)(gong)(gong)(gong)(gong)作。
鋼波紋管涵洞有哪些施工要求?
在公(gong)路涵(han)洞中(zhong)對(dui)其破壞(huai)更(geng)(geng)大(da)的(de)因素(su)就是沉降(jiang)不(bu)平均,公(gong)路涵(han)洞施(shi)工(gong)中(zhong),其使用(yong)材料與(yu)工(gong)程(cheng)結構(gou)具(ju)有(you)(you)一定的(de)關(guan)系(xi)。通常情(qing)況下(xia),施(shi)工(gong)職(zhi)員都(dou)會使用(yong)柔(rou)性(xing)(xing)、高強度的(de)鋼(gang)(gang)波(bo)(bo)紋(wen)管涵(han)洞,這種材料不(bu)僅具(ju)有(you)(you)一定的(de)適應(ying)地基(ji)與(yu)基(ji)礎變形的(de)能(neng)力(li),而且(qie)對(dui)于解決因地基(ji)基(ji)礎不(bu)平均沉降(jiang)導致(zhi)的(de)涵(han)洞破壞(huai)題(ti)目也具(ju)有(you)(you)重要作用(yong),鋼(gang)(gang)波(bo)(bo)紋(wen)管涵(han)洞因其軸向(xiang)(xiang)波(bo)(bo)紋(wen)的(de)存在使之具(ju)有(you)(you)良好(hao)的(de)受力(li)能(neng)力(li)。鋼(gang)(gang)波(bo)(bo)紋(wen)管涵(han)洞的(de)軸向(xiang)(xiang)和徑向(xiang)(xiang)同(tong)時分布可以在一定程(cheng)度上(shang)將(jiang)荷(he)載的(de)應(ying)力(li)進行(xing)有(you)(you)效(xiao)分散,從而更(geng)(geng)好(hao)地施(shi)展鋼(gang)(gang)結構(gou)的(de)上(shang)風(feng)(feng)。利用(yong)鋼(gang)(gang)波(bo)(bo)紋(wen)管結構(gou)可以有(you)(you)效(xiao)修筑不(bu)良工(gong)程(cheng)巖(yan)土(tu)地區的(de)涵(han)洞,如(ru):多(duo)年凍土(tu)、軟土(tu)、膨脹土(tu)、濕(shi)陷性(xing)(xing)黃土(tu)等不(bu)良工(gong)程(cheng)巖(yan)土(tu)地區。鋼(gang)(gang)波(bo)(bo)紋(wen)管因其明顯的(de)上(shang)風(feng)(feng)也使其具(ju)有(you)(you)更(geng)(geng)廣闊的(de)應(ying)用(yong)遠景。
鋼(gang)波紋(wen)(wen)管(guan)作為一種新型技術在公路涵(han)洞工程施工中的(de)(de)具(ju)(ju)有(you)很大(da)的(de)(de)上風,鋼(gang)波紋(wen)(wen)管(guan)涵(han)洞技術不僅具(ju)(ju)有(you)施工周(zhou)期短、適應能力(li)強、地基承載力(li)要求(qiu)低的(de)(de)特點(dian),而且具(ju)(ju)有(you)較(jiao)強的(de)(de)耐(nai)性,可(ke)以大(da)大(da)減(jian)少(shao)施工的(de)(de)時(shi)間(jian),因而這(zhe)種技術被運(yun)用。本文主要探討了鋼(gang)波紋(wen)(wen)管(guan)涵(han)洞的(de)(de)技術特點(dian)以及上風。
機(ji)能(neng)分析(xi)其主(zhu)要(yao)機(ji)能(neng)上風表現在抗拉機(ji)能(neng)、抗沖擊韌性、耐(nai)疲憊性以及冷(leng)彎機(ji)能(neng)等幾個方面,沖擊韌性主(zhu)要(yao)是(shi)指(zhi)(zhi)鋼材抵擋(dang)沖擊荷載作用的能(neng)力;耐(nai)疲憊性主(zhu)要(yao)是(shi)指(zhi)(zhi)其在反復的交變(bian)荷載作用下為(wei)產(chan)生(sheng)疲憊破壞(huai)的更大應力;冷(leng)彎機(ji)能(neng)主(zhu)要(yao)是(shi)指(zhi)(zhi)其在常溫狀態下承(cheng)受彎曲變(bian)形(xing)的能(neng)力。
材料(liao)組成(cheng)及機能(neng)分(fen)(fen)析(xi)材料(liao)組成(cheng) 鋼(gang)波紋管(guan)主(zhu)(zhu)要是采(cai)用(yong)標注化(hua)和(he)規模化(hua)的(de)(de)工(gong)廠出產的(de)(de)方式,在(zai)將鋼(gang)板材料(liao)Q235進行壓卷后制成(cheng)管(guan)節(jie)結構(gou),該種鋼(gang)材的(de)(de)各項工(gong)程應用(yong)機能(neng)都(dou)較好(hao)(hao),并(bing)且具有著(zhu)良好(hao)(hao)的(de)(de)適(shi)應變形(xing)機能(neng)和(he)可加工(gong)機能(neng)。Q235表示的(de)(de)為屈服點(dian)為235Mpa的(de)(de)鋼(gang)材,其(qi)主(zhu)(zhu)要的(de)(de)化(hua)學(xue)成(cheng)分(fen)(fen)如下所示:
鋼波紋管涵(han)(han)(han)(han)洞(dong)(dong)類(lei)(lei)型(xing) 假如按照建筑材(cai)料(liao)的(de)(de)(de)不(bu)同對涵(han)(han)(han)(han)洞(dong)(dong)結構(gou)進行類(lei)(lei)型(xing)劃分,其主(zhu)要(yao)可以分為石涵(han)(han)(han)(han)、鋼筋混(hun)凝(ning)土涵(han)(han)(han)(han)、素(su)混(hun)凝(ning)土涵(han)(han)(han)(han)以及(ji)(ji)鋼波紋管涵(han)(han)(han)(han)等(deng)幾種(zhong)類(lei)(lei)型(xing)。特(te)別是(shi)在(zai)(zai)(zai)當前(qian)高速公路建設數(shu)目及(ji)(ji)建設里程快速增長的(de)(de)(de)情況下,涵(han)(han)(han)(han)洞(dong)(dong)材(cai)料(liao)的(de)(de)(de)選(xuan)擇逐漸呈現出(chu)了(le)多樣化(hua)的(de)(de)(de)發(fa)展趨(qu)勢。但是(shi)在(zai)(zai)(zai)實際的(de)(de)(de)施工過程中,應主(zhu)要(yao)按照涵(han)(han)(han)(han)洞(dong)(dong)的(de)(de)(de)使用(yong)功能(neng)以及(ji)(ji)工程進度要(yao)求,并(bing)在(zai)(zai)(zai)充分結合(he)施工現場(chang)前(qian)提的(de)(de)(de)基礎(chu)上(shang),進行公道的(de)(de)(de)涵(han)(han)(han)(han)洞(dong)(dong)材(cai)料(liao)選(xuan)擇。以往(wang)受(shou)到了(le)較多的(de)(de)(de)施工技術(shu)水(shui)平(ping)(ping)限(xian)制以及(ji)(ji)材(cai)料(liao)機能(neng)限(xian)制,較多的(de)(de)(de)采用(yong)的(de)(de)(de)石涵(han)(han)(han)(han)作為主(zhu)要(yao)的(de)(de)(de)涵(han)(han)(han)(han)洞(dong)(dong)施工材(cai)料(liao)。但是(shi)跟著當前(qian)出(chu)產力水(shui)平(ping)(ping)的(de)(de)(de)不(bu)斷(duan)晉升以及(ji)(ji)涵(han)(han)(han)(han)洞(dong)(dong)施工技術(shu)水(shui)平(ping)(ping)的(de)(de)(de)提高,具(ju)有良好抗拉、抗壓和抗剪強度的(de)(de)(de)鋼波紋管涵(han)(han)(han)(han)洞(dong)(dong)在(zai)(zai)(zai)公路建設中得到了(le)更(geng)為的(de)(de)(de)應用(yong)。
在高(gao)速(su)公路建設(she)中,涵(han)洞是(shi)高(gao)速(su)公路的重要(yao)結構(gou)物,一般都采用鋼筋(jin)砼(tong)蓋板(ban)涵(han)、箱涵(han)鋼波(bo)紋管(guan)(guan)涵(han)等等,鋼波(bo)紋管(guan)(guan)涵(han)作(zuo)為高(gao)速(su)公路中新型涵(han)洞形式,本文對鋼波(bo)紋管(guan)(guan)涵(han)的施工組織具體敘述。
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