復(fù)雜曲線鋼箱梁頂推施工技術(shù)

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【中圖分類號(hào)】：U445.4 【文獻(xiàn)標(biāo)志碼】：A 【文章編號(hào)】：1008-3197（2025）02-34-05

【DOI編碼】：10.3969/j.issn.1008-3197.2025.02.008

Construction Technology of Complex Curve Steel Box Girder Jacking

ZHANG Bin1，2

（1.ChinaRailwaCostructionBdgeEngieingBureauGoupCoLd.anjin3Oo，hina；ianjinKeLaboratoryoftelt Construction Technologyand Equipment，Tianjin3Oo3OO，China）

【Abstract】：Aimingat the characteristicsof smallradius，large longitudinal slope，complexcurveof the steelboxgirderof Macao Bridge，BrampBA8＼～BP7crawlercrane + section bracket method erection first，BP7＼～BP1 multipoint synchronous curve pushing construction scheme.According to the needs of jacking，temporary support， steel guide beam，temporary connection，steel box girder sectionfactory prefabrication，ship to the site，after using gantry crane lifting to theassembly platform welding into the whole section jacking；jacking construction，through flat curve and vertical curve simulation，reduce the constructioncorrction，3D numerical simulation and whole process simulation analysis with intelligent jacking control system，forecast correction measures inadvance，reasonably control the jacking force，efectively ensure the linear shape and construction safety.

【Key words】：urban bridge；steel box girder；top push construction

鋼箱梁因自重小、剛度大、跨越能力強(qiáng)、結(jié)構(gòu)美觀在城市立交或大型橋梁匝道橋中得到廣泛應(yīng)用。（剩余6037字）