异型曲线连续刚构桥空间力学性能分析

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1、异型曲线连续刚构桥空间力学性能分析AbstractInthecaseofrestrictionsontopographyconditionandroadscrossnetwork，sometimeswehavetousethealiencurvebeambridge．However，thereiSlessreseachonspacealienscurvestressinthewidercross—sectionoflongspancontinuousrigidframeBridges，someproblemsstillneedtobediscussedands

2、tudied．ThispaperuseNanjingMetroLineNo．3whichis41+41mdoublewidecross。sectionofchangecurveastheengineeringbackgroundoflongspancontinuousrigidframeBridges，andanalyzethebridge’SmechanicalpropertiesbyspacefiniteelementmodelwhichiSbuiltbyfiniteelementsoftwareMidas／Civil．Themainworkaccompl

3、ishedinthispaperareasfollows：1．IntroducethecurveofthestructurecharacteristicsoflongspancontinuousrigidframeBridgesandthestructuralcharacteristicsandsupportingcharacteristicsbriefly，thispaperexpoundsthebasiccontinuousrigidframeCHIVecalculationtheory．2．BasedonvariableAnglespacetrussth

4、eory，thepaperderivestheprestressedcurvebendingmoment，shearboxincomplexstressstate，twisttheresistancetotwiststrengthcalculationformula．3．Buildtwosubwayacrossthewiderdualvariablecross．sectionofthecurveofthecontinuousrigidflamebridgeofmodelbyApplicatingMidas／Civilfiniteelementanalysiss

5、oftware．analyzeitindifferentloadconditionsinternalforce，areactionforceanddisplacement，andmakeacomparativeanalysis，andsumsupthealiencurveoftheintemalforcedistributionoflongspancontinuousrigidframeBridges．4．Analyzethedifferentstructureunderdifferentloadcombinationofthestresscondition，

6、itiSconcludedthatthestressdistributionlaw,findoutthestressdistributionofthemostunfavorableposition．5．Onthestrengthofthealienstructure(flexuralstrength，shearstrengthandwrestresistantstrength)andresistance(issection，andtheinclinedsection)link，determinethebendingdesign，sheardesignandth

7、econtrolsectionwrestresistantdesignposition．6．AnalyzethedifferentstructurethicknessDofthebottomcurveoftheindexfunction，asresultreasonableSuggestionsandvaluearegiven；Thealienstructureofhorizontalringframeanalysis，confirmethetransverseforcedistributionthemostunfavorableposition，andgiv

8、ethereinforcementSu