曲线连续刚构桥空间受力分析

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1、Withtherapiddevelopmentofmountainexpresswayandelevatedroad,thecurvedcontinuousrigidframebridgehasbeenwidelyexpandedinrecentyears．Becauseitcanbewelladaptedtoothetopographyconstraints，reduceroadlength,maketheroadsmoother,fluid,andhaveotherdistinctiveadvantagesithasbeenwidelyusedinhighw

2、ayandurbanoverpassintheseyears．Meanwhile，there踟℃someproblemsexistincurvedbridges，suchas-theinfluenceoftemperamreandprestressreinforcement．，11舱bridgeofNiXiGou2撑istakenastheresearchobjecttoresearchtheinfluenceofthetemperatureandtheprestressreinforcementwimthehelpofFEMsoftwareMidasFEA．F

3、irstly,summarizedtheload-carryingcapabilitycharacteristicandresearchpresentstatusofcurvedbridge．Ihavediscussedthefundamentaltheoriesofcurvedbridgeincludingdeducingthedifferentialformula,themethodthatcansolvethequestionofShearLagEffectandthetorsiontheory．Secondly,consideringtheeffecto

4、fprestressedsteelbeamoncurvedgirderbridge,thispaperdiscussedtheactionprincipleofPrestressedsteelbeamsonconcreteboxgirderandderivedthecurvedgirderbridgeprestressedequilibriumdifferentialequations．Basedontheactualproject,usingthefiniteelementmethod,theartificialmodelswhichhavedifferent

5、curvcradiusarebuilt：800m,1500m,curvesandsWaight-linecontinuousrigidfiBIncbridge．Throughthediscussionofthecalculationresults，Iobtainedtheimportantconclusionthatduringtheprocessofconstructiontheroofprestressedbeamhasasignificantimpactandintheprocessofthebridgeintoastate，thecross·floorb

6、eamshaveasignificantimpactonthecurverigidframebridgedeformationandstress，also．Finally,consideringtheeffectofthetemperatureonthecurvedbridges，thispapersummarizedthestudyofcurvedgirdertemperatureeffectandtherulesofsomecountriesabouttemperatureloads．Accordingtothelocalmeteorologicaldata

7、,Istudiedthereactiousofthecurvedcontinuousrigidframebridgewithdifferentcurveradiusandconcludedtheregulationcausedbysunshinetemperatureandyeartempga'ature．rn帕lawswhichaleputforwardinthisarticleareveryimportantforthedesignerswhodesignthesmTletypeofbridges．LKEYWORDS：curvedcontinuousrigi

8、dframebridge