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地震作用下悬挂式单轨车桥系统动力性能分析.docx

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地震作用下悬挂式单轨车桥系统动力性能分析 Title:AnalysisoftheDynamicPerformanceofaSuspendedMonorailBridgeSystemunderEarthquakeExcitation Abstract: Thispaperaimstoanalyzethedynamicperformanceofasuspendedmonorailbridgesystemundertheeffectofearthquakes.Themotion-inducedbyseismicexcitationcansignificantlyimpactthesafetyandstabilityoftheentiresystem.Therefore,itisvitaltoevaluateandunderstandthedynamicbehaviorofthesuspendedmonorailbridgesystemtoensureitsreliabilityduringseismicevents.Thisstudyinvestigatestheinfluenceofearthquakesonthedynamicperformanceofthebridgesystem,includingstructuralresponses,bridgedisplacement,acceleration,andtheoverallpassengercomfortlevel. 1.Introduction: Thesuspendedmonorailbridgesystemisamoderntransportationsolutionwidelyusedinurbanenvironmentsduetoitscost-effectiveness,adaptability,andspaceefficiency.However,itsdynamicperformanceunderseismicexcitationmustbethoroughlyanalyzedtoguaranteepassengersafetyandcomfort.Thispaperpresentsacomprehensiveanalysisofthedynamicbehaviorofthesuspendedmonorailbridgesystemduringearthquakes. 2.LiteratureReview: Thissectionprovidesanoverviewofpreviousstudiesrelatedtothedynamicperformanceofvarioustypesofbridgesunderseismicloading.Ithighlightstheimportanceofanalyzingthesuspensionsystem,structuralresponses,passengercomfort,andotherrelevantparameters. 3.Methodology: Theresearchmethodologyincludestwomaincomponents:numericalmodelingandearthquakeexcitation.Afiniteelementanalysis(FEA)modelisdevelopedtosimulatethebehaviorofthesuspendedmonorailbridgesystem.Themodeltakesintoconsiderationthedynamiccharacteristicsofthesuspensionsystem,aswellastheinteractionsbetweenthebridge,piers,andthesupportingground.Variousearthquakeexcitationscenariosareappliedtothesystemtoevaluateitsdynamicresponse. 4.StructuralResponses: Thissectionpresentstheanalysisofthestructuralresponses,suchasstresses,strains,anddisplacements,ofthesuspendedmonorailbridgesystemsubjectedtodifferentgroundmotions.Theimpactofvariousdesignparameters,includingspanlength,suspensionstiffness,anddam