基于车桥动力分析的高墩曲线箱梁桥横向力分析

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1、AbstractInrecentyears,mountainoushighwayinourcountryisintoaperiodoflarge-scaleconstruction.Curvedgirderbridgeiswidelyusedbecausethecanovercomemountainsofcomplextopographyfactorsandcomplywiththerequirementsofroadalignmentwell.Spansofcurvingbridgeinthemountainsareoft

2、ensizable,whencrossingravines,objectivelyrequiresaloftypier,movablecross-sectionboxgirderstructure,whichmakesdoingresearchonhighpiercurvecontinuousboxgirderbecomesveryimportant.Althoughthescholarsbothathomeandabroadhavedonealotofresearchaboutmechanisticpropertiesof

3、thecurvedgirder,andhavealsodonealotofachievementsinaxleverticalcoupling・Butresearchforhighpiercurvegirderundervehicleloadtransverseforceisless.Forverticaldynamiccharacteristicsoftallpierscurveboxgirder,theinfluenceoftheloftypierissmaller.Nonetheless,onthecross,thei

4、nfluenceoftheelevatedpieriscannotbeignored.Thispapergivestheresearchbackground,andthenthespousalandforeignresearchresultsandrecentresearchprogressarereviewed.Multiplesetsofelevatedpiercurveboxgirdermodelarebuiltandhowthecarrunonthecurvebeamissimulated.Respectivelyt

5、helateralforcecoefficientofthecurveboxgirderbridgewithhigh-risepiersandthedistributionoflateralforceinthepiertoparcstudied・Themainconclusionsthatthelatterforcecoefficientofthetallpiercurveboxgirderwhichiscalculatedbasedonthehypotheticalformulaissmallerthanthatiscal

6、culatedbasedonthesimulationanalysisandthedistributionoflateralforceoftheloftypiercurveboxgirderbridgeatthetopofthebridgepierpositionisrelatedtothelocationoftheforce,theabutmentpierawaytherolespanhavenoforceareconcluded・Keywords:Vchiclc-BridgcDynamicAnalysis;HighPie

7、r;CurveBoxGirderBridge;LateralForceCoefficient;LateralForceDistribution摘要IAbstractII1绪论1.1研究背景(1)1.2国内外相关研究与实践综述(2)1.3本文主要研究内容(6)2桥梁横向力研究的基本理论与方法2.1引言(8)2.2车桥相互作用的基本理论(8)2.3横向力系数的基本理论(10)2.4横向力分酉己基本理论(15)2.5本章小结(16)3高墩曲线箱梁有限元模型3.1引言(18)3.2基本假定(18)3.3有限元分析模型(19)3.4本

8、章小结(26)4高墩曲线箱梁桥横向力系数研究4.1引言(27)4.2基于理论公式的横向力系数求解(27)4.3基于车桥动力学分析的横向力系数求解(28)4.4横向力系数仿真结果分析(30)4.5本章小结(33)5高墩曲线箱梁桥墩顶横向力分配研究5.1引言(34)5.2基于理论公式的横向力分