土木工程专业论文翻译

Abstract:Vehicle-bridgeinteractionhasbeenstudiedforalongtimetoinvestigatethestructuralbehaviorofbridgesandvehicleridecomfort.Anoriginalfrequencydomainmethodispresentedwherethevehicle-bridgeinteractionproblemissolvedinaframeofreferencethatmoveswiththevehicle.TheFouriertransformoftheinteractionforceiscomputeddirectlyfromthevehiclecomplianceandbridgecompliance,withoutrequiringanyiterations.Themethodisparticularlyusefulwhenaclosed-formsolutionofthebridgecomplianceisavailable,asinthecaseofasimplysupportedEuler-Bernoullibeammodelforthebridge.Thesolutionis,therefore,well-suitedforparametricstudiesonthebridgeandvehicleresponsecharacteristicsandoffersareferenceformoredetailedmodelsofthebridgeandthevehicleormorecomplicatedbridgeconfigurations(e.g.,continuousbeamonmultiplesupports).Thefrequencydomainapproachalsoleadstoenhancedphysicalunderstanding,becauseitshowshowtheinteractionforcedecomposesintoatermresultingfromthedynamicresponseofthebridgetotheconstantmovingloadcomponentandatermbecauseofroadsurfaceunevenness.Anefficientsolutionprocedurebasedonrandomvibrationanalysisispresented,whichallowsforthecomputingofthestatisticalcharacteristicsofthebridgeandvehicleresponsefromthepowerspectraldensityfunctionoftheunevenness.TheprocedureisvalidatedbymeansofMonteCarlosimulationresultsforthecasewherethepassageofaheavyvehicleonahighwaybridgeisconsidered.DOI:10.1061/(ASCE)EM.1943-7889.0000386.©2012AmericanSocietyofCivilEngineers.摘要：车-桥相互作用的研究已经有很长一段时间调查的桥梁和车辆平顺性的结构行为。一个原始的频域方法在车桥相互作用问题是一个与车辆的移动参考帧的解决。的相互作用力的傅里叶变换计算直接从车辆符合桥规，不需要任何迭代。该方法是特别有用，当桥的依从性的封闭形式的解决方案是可用的，如在简支梁桥为欧拉伯努利梁模型的情况下。解决的方法是，因此，非常适合对桥梁和车辆的响应特性参数研究和提供更详细的车辆和桥梁或更复杂的桥梁结构模型的参考（例如，连续梁在多个支持）。频域方法也导致了增强的物理的理解，因为它显示了如何相互作用的力分解成从桥上不断移动荷载分量和一个词由于路面不平度的动态响应产生的条件。一种基于随机振动分析的有效的解决方案的过程，它允许的不均匀的功率谱密度函数的桥梁和车辆响应的统计特性的计算。程序验证通过蒙特卡罗模拟结果的情况下，对公路桥梁，重型车辆的通道被认为是。Abstract:Vehicle-bridgeinteractionhasbeenstudiedforalongtimetoinvestigatethestructuralbehaviorofbridgesandvehicleridecomfort.Anoriginalfrequencydomainmethodispresentedwherethevehicle-bridgeinteractionproblemissolvedinaframeofreferencethatmoveswiththevehicle.TheFouriertransformoftheinteractionforceiscomputeddirectlyfromthevehiclecomplianceandbridgecompliance,withoutrequiringanyiterations.Themethodisparticularlyusefulwhenaclosed-formsolutionofthebridgecomplianceisavailable,asinthecaseofasimplysupportedEuler-Bernoullibeammodelforthebridge.Thesolutionis,therefore,well-suitedforparametricstudiesonthebridgeandvehicleresponsecharacteristicsandoffersareferenceformoredetailedmodelsofthebridgeandthevehicleormorecomplicatedbridgeconfigurations(e.g.,continuousbeamonmultiplesupports).Thefrequencydomainapproachalsoleadstoenhancedphysicalunderstanding,becauseitshowshowtheinteractionforcedecomposesintoatermresultingfromthedynamicresponseofthebridgetotheconstantmovingloadcomponentandatermbecauseofroadsurfaceunevenness.Anefficientsolutionprocedurebasedonrandomvibrationanalysisispresented,whichallowsforthecomputingofthestatisticalcharacteristicsofthebridgeandvehicleresponsefromthepowerspectraldensityfunctionoftheunevenness.TheprocedureisvalidatedbymeansofMonteCarlosimulationresultsforthecasewherethepassageofaheavyvehicleonahighwaybridgeisconsidered.DOI:10.1061/(ASCE)EM.1943-7889.0000386.©2012AmericanSocietyofCivilEngineers.摘要：车-桥相互作用的研究已经有很长一段时间调查的桥梁和车辆平顺性的结构行为。一个原始的频域方法在车桥相互作用问题是一个与车辆的移动参考帧的解决。的相互作用力的傅里叶变换计算直接从车辆符合桥规，不需要任何迭代。该方法是特别有用，当桥的依从性的封闭形式的解决方案是可用的，如在简支梁桥为欧拉伯努利梁模型的情况下。解决的方法是，因此，非常适合对桥梁和车辆的响应特性参数研究和提供更详细的车辆和桥梁或更复杂的桥梁结构模型的参考（例如，连续梁在多个支持）。频域方法也导致了增强的物理的理解，因为它显示了如何相互作用的力分解成从桥上不断移动荷载分量和一个词由于路面不平度的动态响应产生的条件。一种基于随机振动分析的有效的解决方案的过程，它允许的不均匀的功率谱密度函数的桥梁和车辆响应的统计特性的计算。程序验证通过蒙特卡罗模拟结果的情况下，对公路桥梁，重型车辆的通道被认为是。Thevehicle-bridgeinteractionproblemissolvedbymeansofacomplianceformulationinaframeofreferencethatmoveswiththevehicle.AnexpressionisderivedforthevariablemovingloadthatshowshowtheFouriertransformoftheforceisdeterminedfromthebridgedisplacementatthecontactpointfortheconstantcomponentofthevehicleloadandtheroadunevenness.Thisprovidesaclearphysicalinsightintotheimportanceofbothexcitationmechanismsforvehicle-bridgeinteraction.Furthermore,anefficientsolutionprocedureispresentedforthenonstationarysecond-orderstatisticalcharacteristicsofthebridgeresponseinthecasewheretheunevennessismodeledasarandomfield.Thesolutionprocedureisillustratedbyanexamplewherethepassageofaheavyvehicleonasinglespanhighwaybridgeisconsidered.Forthecalculations,useismadeofclosed-formsolutionsthatareavailableforasimplysupportedEuler-Bernoullibeammodelforthebridge.Thesolutionprocedureforthesecond-orderstatisticalcharacteristicsofthebridgeresponseissuccessfullyvalidatedbymeansofMonteCarlosimulations.车-桥相互作用的问题是由在一个与车辆的移动参考帧遵守制定的手段解决。推导了变荷载说明力的傅里叶变换确定从桥的位移在接触点的车辆荷载的恒定分量和路面不平度。这提供了一个清晰的物理洞察的激发车桥相互作用机制的重要性。此外，一个有效的解决方案程序的非平稳二阶统计特性的桥梁响应的情况下的不均匀性是建模为一个随机的字段。求解过程是用一个例子说明在重型车辆上的单跨公路桥通道是。在计算中，使用了封闭形式的解决方案，可用于简支桥梁欧拉伯努利梁模型。通过蒙特卡罗模拟，验证成功的桥梁响应的二阶统计特性的求解过程。