鋼波紋涵(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)施(shi)工(gong)(gong)時為什么(me)選(xuan)用(yong)分段施(shi)工(gong)(gong)的辦(ban)法？鋼波紋涵(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)施(shi)工(gong)(gong)時，選(xuan)用(yong)分段施(shi)工(gong)(gong)的辦(ban)法，預先在原拱涵(han)基底(di)用(yong)角鋼并排(pai)兩根，長(chang)度(du)依據(ju)(ju)涵(han)長(chang)確定。鋼波紋管(guan)(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)徑依據(ju)(ju)工(gong)(gong)程需要可有不同(tong)的規(gui)格，整裝管(guan)(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)徑為0.5m--2.5m;每節管(guan)(guan)(guan)(guan)(guan)(guan)(guan)長(chang)度(du)3米左右。選(xuan)用(yong)內(外)法蘭螺栓銜接。組裝涵(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)徑為3m--8m。

鋼波紋涵管有(you)圓(yuan)(yuan)形、鴨子蛋圓(yuan)(yuan)形、半圓(yuan)(yuan)形等，出進口也可按照邊坡份額(e)做(zuo)成(cheng)斜口，加工(gong)波(bo)紋(wen)管管徑范(fan)圍Φ0.5m～Φ8m，管壁(bi)厚度為3mm～7mm，能夠滿意填土0.5m～40m厚的(de)需(xu)求。鋼(gang)制鋼(gang)波(bo)紋(wen)管具有(you)工(gong)期短、重量輕、裝(zhuang)置便捷、經久性好(hao)、工(gong)程(cheng)造價低、抗變型有(you)經歷強、減損通(tong)車后維護本錢等的(de)地方，從資料與結構和(he)功(gong)能的(de)實質關系上剖析。

認為適宜而(er)運用(yong)柔性、高(gao)超度的鋼制鋼波(bo)紋(wen)管(guan)洞，不止(zhi)具(ju)有(you)(you)適合地基(ji)與根(gen)底變型(xing)的有(you)(you)經(jing)歷，能夠處理因地基(ji)根(gen)底翹棱均沉(chen)降造成的涵(han)洞毀傷(shang)標題，而(er)且鋼制鋼波(bo)紋(wen)管(guan)洞由于軸(zhou)向波(bo)紋(wen)的存在使其具(ju)有(you)(you)突出(chu)的受力特點(dian)標志，軸(zhou)向和(he)徑向一起散(san)布因荷載引動的應力應變，能夠更大程度上散(san)布荷載的應力會集(ji)，更好地發(fa)揮鋼結構的上風。

鋼波紋管

特(te)別在高寒凍土、軟土、脹大土、濕陷性黃土等區(qu)域(yu)，具有表面(mian)化的經濟效(xiao)益(yi)。涵洞(dong)施工前，準備(bei)相關資料、人(ren)員(yuan)及設備(bei)出場，并作好施工時期的安(an)全防護作業，對路基(ji)邊(bian)坡(po)進行圍網防護，避(bi)免石塊等物體下(xia)滑傷人(ren)。根(gen)底處(chu)理(li)，可回填沙(sha)礫或砌筑片石砼。

對基(ji)底進行平坦，換(huan)填30-50cm厚的(de)(de)沙(sha)礫資料，密實度(du)到達90%以(yi)上，挑(tiao)選恰當的(de)(de)流(liu)水縱坡3%左右。如果涵洞(dong)長大于(yu)(yu)30米，鋼(gang)波紋管兩邊與原(yuan)涵洞(dong)寬(kuan)度(du)小(xiao)于(yu)(yu)80cm，可將3m-6m長涵管在下(xia)流(liu)或上游向一端(duan)(duan)推進，就位以(yi)后(hou)，能夠(gou)將其固定，砌筑頂端(duan)(duan)的(de)(de)片(pian)石端(duan)(duan)墻，鋼(gang)波紋管的(de)(de)另(ling)一端(duan)(duan)與涵洞(dong)間的(de)(de)距離(li)用沙(sha)袋或漿砌片(pian)石擋住，寬(kuan)度(du)50cm，然后(hou)開(kai)端(duan)(duan)回(hui)填。