京沪高速铁路南京越江工程桥梁方案设计

:1003-4722(2003)03-0001-04(,430050):,,:;;;;;,:U448.13;U442.54:ABridgeConceptualDesignforNanjingChangjiangRiverCrossingonBeijing2ShanghaiHigh2SpeedRailwayYANGJin(MajorBridgeReconnaissance&DesignInstituteofChinaRailwayEngineeringCorporation,Wuhan430050,China)Abstract:AsregardstheNanjingChangjiangRiverCrossingProjectonBeijing2ShanghaiHigh2SpeedRailwaythatwillpassthroughNanjingcityproper,therearecurrentlytwoplannedalternativesofanimmersedtubetunnelintheRiverandarailwaybridgeovertheRiverforselection.Inthelightofthefeaturesofopera2tionofthehigh2speedrailwaybridgeandtheconcernsforaccessibleclearanceunderthebridge,thispaperde2scribesindetailsthedesignconsiderationsforthebridgeconceptualdesign,andtheproposednewtypeofthebridgemaingirderstructures.Keywords:railwaybridge;cable2stayedbridge;bridgesite;bridgetype;maingirder,alternativese2lection;bridgedesign:2003-02-10:(1930-),,,,,,19531,300350km/h,1400km,,,35m,,,,,2,,,,2km,2.3km(1)11,,128m+3(3160m),4,68,9,700m4,,,,,450m1000m3,:,1100m,,,,500m,,,,,,,,(2)4,,,,,,,,,,,,,5,,6(84+160)m+488m+488m+(160+84)m,1464m,2488m160m,22200338,4,,,,,A,8m,,,,,,84m1,,6PC,,,,,,,,,,,,,,,PC,,PC,,,,,,,,,,PC,PC,PC,,,PC,,PC,PC,,,PC33PC7,,160,200km/h,200,250,300,350km/h,PC,:(1)ZK31/670,1/2380,1/22700.0014rad(2),1/5632(3),0.13g,Sperling3.0,,0.1g;,8,,96m,312m,,PC,,,,,,,44200020024200120002832546()1120005710.1430.0130.102.795516811,,,,,20002220000.30.30.10.20.11.01.51.51.61.61.17.37.3465()420033©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.