鋼波紋管涵洞的(de)施(shi)工(gong)(gong)主要(yao)有(you)以下特點:首先,其施(shi)工(gong)(gong)工(gong)(gong)藝(yi)流程較(jiao)為特殊(shu),在(zai)(zai)施(shi)工(gong)(gong)前(qian)要(yao)進(jin)(jin)行(xing)(xing)(xing)以下工(gong)(gong)作(zuo):施(shi)工(gong)(gong)前(qian)預備、施(shi)工(gong)(gong)放樣、設(she)置圍(wei)堰(yan)、排水(shui)清(qing)淤以及(ji)平整(zheng)場地等。在(zai)(zai)施(shi)工(gong)(gong)工(gong)(gong)作(zuo)中要(yao)對(dui)其壓(ya)實度(du)(du)、含(han)水(shui)量(liang)進(jin)(jin)行(xing)(xing)(xing)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce),接(jie)著對(dui)水(shui)準進(jin)(jin)行(xing)(xing)(xing)丈量(liang),基(ji)(ji)于此(ci),對(dui)施(shi)工(gong)(gong)基(ji)(ji)礎進(jin)(jin)行(xing)(xing)(xing)分(fen)層(ceng)回填,檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)壓(ya)實度(du)(du)、含(han)水(shui)量(liang)等,接(jie)著要(yao)拼裝管(guan)節,對(dui)工(gong)(gong)程的(de)密(mi)水(shui)情(qing)況及(ji)管(guan)底縱坡進(jin)(jin)行(xing)(xing)(xing)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce),并(bing)對(dui)防腐涂層(ceng)進(jin)(jin)行(xing)(xing)(xing)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)與補救。施(shi)工(gong)(gong)的(de)樞(shu)紐的(de)環節就是將涵管(guan)進(jin)(jin)行(xing)(xing)(xing)就位(wei),將涵管(guan)兩側進(jin)(jin)行(xing)(xing)(xing)分(fen)層(ceng)回填,并(bing)要(yao)檢(jian)(jian)(jian)(jian)測(ce)(ce)(ce)壓(ya)實度(du)(du)、含(han)水(shui)量(liang)等,后進(jin)(jin)出口(kou)處理工(gong)(gong)作(zuo)。
鋼波紋管涵洞有哪些施工要求?
在公(gong)路(lu)涵(han)(han)洞(dong)(dong)(dong)中(zhong)對其(qi)破壞(huai)更(geng)(geng)大的(de)(de)因(yin)素就是沉(chen)降不平均,公(gong)路(lu)涵(han)(han)洞(dong)(dong)(dong)施(shi)工(gong)中(zhong),其(qi)使(shi)用材(cai)料與工(gong)程結構(gou)具(ju)有一(yi)定的(de)(de)關(guan)系。通常情(qing)況(kuang)下,施(shi)工(gong)職員都會(hui)使(shi)用柔性、高強(qiang)度的(de)(de)鋼(gang)波(bo)(bo)紋(wen)(wen)管(guan)(guan)涵(han)(han)洞(dong)(dong)(dong),這種材(cai)料不僅具(ju)有一(yi)定的(de)(de)適應地(di)基(ji)與基(ji)礎變(bian)形的(de)(de)能力(li)(li),而且對于(yu)解決因(yin)地(di)基(ji)基(ji)礎不平均沉(chen)降導致(zhi)的(de)(de)涵(han)(han)洞(dong)(dong)(dong)破壞(huai)題(ti)目也具(ju)有重要作用,鋼(gang)波(bo)(bo)紋(wen)(wen)管(guan)(guan)涵(han)(han)洞(dong)(dong)(dong)因(yin)其(qi)軸(zhou)向波(bo)(bo)紋(wen)(wen)的(de)(de)存在使(shi)之具(ju)有良好的(de)(de)受(shou)力(li)(li)能力(li)(li)。鋼(gang)波(bo)(bo)紋(wen)(wen)管(guan)(guan)涵(han)(han)洞(dong)(dong)(dong)的(de)(de)軸(zhou)向和徑向同時分布可(ke)(ke)以在一(yi)定程度上將荷載的(de)(de)應力(li)(li)進行(xing)有效分散,從而更(geng)(geng)好地(di)施(shi)展鋼(gang)結構(gou)的(de)(de)上風。利(li)用鋼(gang)波(bo)(bo)紋(wen)(wen)管(guan)(guan)結構(gou)可(ke)(ke)以有效修筑不良工(gong)程巖(yan)土(tu)(tu)地(di)區的(de)(de)涵(han)(han)洞(dong)(dong)(dong),如:多(duo)年凍土(tu)(tu)、軟土(tu)(tu)、膨(peng)脹(zhang)土(tu)(tu)、濕(shi)陷(xian)性黃土(tu)(tu)等不良工(gong)程巖(yan)土(tu)(tu)地(di)區。鋼(gang)波(bo)(bo)紋(wen)(wen)管(guan)(guan)因(yin)其(qi)明顯(xian)的(de)(de)上風也使(shi)其(qi)具(ju)有更(geng)(geng)廣闊的(de)(de)應用遠景。
鋼(gang)波紋管作為一種新型技(ji)術(shu)在公路(lu)涵(han)洞(dong)工(gong)(gong)程施工(gong)(gong)中的(de)具(ju)有(you)很大的(de)上(shang)風,鋼(gang)波紋管涵(han)洞(dong)技(ji)術(shu)不僅具(ju)有(you)施工(gong)(gong)周期短、適應能力強、地基承載力要求低的(de)特點,而且(qie)具(ju)有(you)較強的(de)耐(nai)性,可以大大減少(shao)施工(gong)(gong)的(de)時間,因而這種技(ji)術(shu)被運用。本文(wen)主要探討了鋼(gang)波紋管涵(han)洞(dong)的(de)技(ji)術(shu)特點以及上(shang)風。
機(ji)(ji)能(neng)(neng)分(fen)析其(qi)主(zhu)要機(ji)(ji)能(neng)(neng)上風表現在(zai)抗拉機(ji)(ji)能(neng)(neng)、抗沖(chong)擊(ji)韌(ren)性、耐疲(pi)憊(bei)性以及冷彎(wan)機(ji)(ji)能(neng)(neng)等幾個方面,沖(chong)擊(ji)韌(ren)性主(zhu)要是指(zhi)鋼(gang)材抵擋沖(chong)擊(ji)荷載作(zuo)用的能(neng)(neng)力;耐疲(pi)憊(bei)性主(zhu)要是指(zhi)其(qi)在(zai)反復的交變荷載作(zuo)用下為產生(sheng)疲(pi)憊(bei)破(po)壞(huai)的更大應力;冷彎(wan)機(ji)(ji)能(neng)(neng)主(zhu)要是指(zhi)其(qi)在(zai)常(chang)溫狀態下承受(shou)彎(wan)曲變形的能(neng)(neng)力。
材(cai)(cai)(cai)料組(zu)成(cheng)(cheng)及機(ji)能(neng)(neng)(neng)分析(xi)材(cai)(cai)(cai)料組(zu)成(cheng)(cheng) 鋼(gang)波紋(wen)管(guan)主要(yao)(yao)是采用(yong)標(biao)注化和(he)規模化的(de)工廠出產的(de)方式,在將鋼(gang)板材(cai)(cai)(cai)料Q235進行壓(ya)卷后制成(cheng)(cheng)管(guan)節(jie)結(jie)構,該種鋼(gang)材(cai)(cai)(cai)的(de)各(ge)項工程(cheng)應用(yong)機(ji)能(neng)(neng)(neng)都較好(hao)(hao),并且具有著良好(hao)(hao)的(de)適應變形機(ji)能(neng)(neng)(neng)和(he)可加(jia)工機(ji)能(neng)(neng)(neng)。Q235表示的(de)為屈服點為235Mpa的(de)鋼(gang)材(cai)(cai)(cai),其主要(yao)(yao)的(de)化學成(cheng)(cheng)分如下所示:
鋼波紋管涵(han)(han)洞(dong)(dong)(dong)類型(xing) 假如按照建(jian)筑材料(liao)的(de)(de)(de)不(bu)(bu)同對(dui)涵(han)(han)洞(dong)(dong)(dong)結構進(jin)行類型(xing)劃分(fen),其主(zhu)要可(ke)以分(fen)為石涵(han)(han)、鋼(gang)筋混凝(ning)土(tu)涵(han)(han)、素混凝(ning)土(tu)涵(han)(han)以及鋼(gang)波(bo)紋管(guan)涵(han)(han)等幾種類型(xing)。特別(bie)是在當(dang)前高速(su)公路建(jian)設(she)數目及建(jian)設(she)里程(cheng)快速(su)增(zeng)長的(de)(de)(de)情(qing)況下,涵(han)(han)洞(dong)(dong)(dong)材料(liao)的(de)(de)(de)選擇逐漸呈現出了多樣(yang)化的(de)(de)(de)發展趨勢。但是在實際的(de)(de)(de)施(shi)工(gong)過程(cheng)中(zhong),應(ying)主(zhu)要按照涵(han)(han)洞(dong)(dong)(dong)的(de)(de)(de)使用功能以及工(gong)程(cheng)進(jin)度要求,并(bing)在充分(fen)結合施(shi)工(gong)現場前提的(de)(de)(de)基(ji)礎上,進(jin)行公道(dao)的(de)(de)(de)涵(han)(han)洞(dong)(dong)(dong)材料(liao)選擇。以往受(shou)到(dao)了較(jiao)多的(de)(de)(de)施(shi)工(gong)技(ji)(ji)術水(shui)平限(xian)制以及材料(liao)機能限(xian)制,較(jiao)多的(de)(de)(de)采用的(de)(de)(de)石涵(han)(han)作為主(zhu)要的(de)(de)(de)涵(han)(han)洞(dong)(dong)(dong)施(shi)工(gong)材料(liao)。但是跟著當(dang)前出產(chan)力水(shui)平的(de)(de)(de)不(bu)(bu)斷晉升以及涵(han)(han)洞(dong)(dong)(dong)施(shi)工(gong)技(ji)(ji)術水(shui)平的(de)(de)(de)提高,具有良好抗(kang)拉、抗(kang)壓和抗(kang)剪強度的(de)(de)(de)鋼(gang)波(bo)紋管(guan)涵(han)(han)洞(dong)(dong)(dong)在公路建(jian)設(she)中(zhong)得到(dao)了更為的(de)(de)(de)應(ying)用。
在高(gao)速(su)公(gong)(gong)路(lu)建設中(zhong),涵(han)(han)洞(dong)是(shi)高(gao)速(su)公(gong)(gong)路(lu)的(de)(de)重要結構物(wu),一(yi)般都采用(yong)鋼(gang)筋砼蓋板涵(han)(han)、箱涵(han)(han)鋼(gang)波紋管涵(han)(han)等(deng)等(deng),鋼(gang)波紋管涵(han)(han)作為高(gao)速(su)公(gong)(gong)路(lu)中(zhong)新型涵(han)(han)洞(dong)形式,本文對(dui)鋼(gang)波紋管涵(han)(han)的(de)(de)施工組織(zhi)具體敘(xu)述。
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