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时间:2019-05-14
《粉房湾长江大桥钢桁梁下船码头选址与施工》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、桥梁建设2012年第42卷增刊1(总第216期)72BridgeConstruction,Vo1.42,SupplementNo.1,2012(TotallyNo.216)文章编号:1003—4722(2012)S1—0072—04粉房湾长江大桥钢桁梁下船码头选址与施工王殿永,黄克起,刘康(中国建筑第六工程局有限公司桥梁公司,天津300457)摘要:重庆粉房湾长江大桥是公轨两用钢桁梁斜拉桥,钢桁梁采用散件拼装,南、北岸钢桁梁杆件分别从各自的制作厂散件上船水运至桥位处。为了让构件在桥址处顺利下船,通过对现场实地勘察,根据桥位处两岸互通
2、不便、长江水位涨落大等地形水文情况,南岸选择在上游200m处,利用既有采砂点,填筑至适当标高,并选定桅杆吊作为卸船设备;北岸选择在上、下游塔柱之间的江边位置,利用江边岩体形成的天然港湾作为码头,并在临江面做加固措施,利用大吨位汽车吊作为卸船设备。关键词:斜拉桥;钢桁梁;散拼;码头;桥梁施工中图分类号:U448.27;U445文献标志码:ASiteSelectionandConstructionofUnloadingWharfsforSteelTrussGirderofFenfangwanChangjiangRiverBridgeWA
3、NGDian—yong,HUANGKe—qi,LIUKang(BridgeCompany,ChinaConstructionSixthEngineeringCo.,I⋯tdTianjin300457,China)Abstract:FenfangwanChangjiangRiverBridgeinChongqingCityisalightrail—cum—roadsteeltrussgirdercable—stayedbridge.Themembersofthesteeltrussgirderofthebridgewereassemb
4、ledpiecebypieceandthemembersofthegirderonboththesouthandnorthbankswererespectivelyloadedonthebargesanddeliveredtothebridgesitefromtheirownplants.Toen—surethatthememberscouldbesmoothlyunloadedatthebridgesite,throughthefieldinvestigationandinconsiderationofthetopographic
5、andhydrologicconditionsthattheaccessfromonebanktotheotheratthebridgesitewasinconvenientandthefluctuationofthewaterlevelsoftheChangjiangRiverwasgreat,theunloadingwharfonthesouthbankwasselectedataplace200mupstreamfromthebridge,whereanexistingsandminingpointwasutilized,th
6、epointwasback—filledtotheappropriateelevationandthemastcranetobeusedastheunloadingequipmentwasarranged.Theunloadingwharfonthenorthbankwasselectedattherivershorejustinbetweentheupstreamanddownstreampyloncolumns,wherethenaturaldockformedbytherockalongtherivershorewasused
7、asthewharf,thesideofthedockfacingtheriverwasstrengthenedandthelargetonnagetruckcraneswereusedastheunloadingequipment.Keywords:cable—stayedbridge;steeltrussgirder;piece—by—pieceassembling;quay;bridgeCOnstrLlction1工程概况岸位于江津区主城区,交通便利,交界墩、辅助墩位重庆粉房湾长江大桥是公轨两用斜拉桥,主桥于防洪大堤上的滨江路
8、两侧,滨江路为城区主干道;桥跨布置为(60.5+156+464+156+60.5)m,设北岸位于西彭镇,桥位处为未经开发的半山坡,岩石置南、北岸2个主墩、2个辅助墩及2个交界墩。南出露,边跨还跨越2条铁路,交通十分不便。桥址处收稿日期
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