斜弯钢箱梁桥支反力计算的影响因素分析

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中图分类号：U448.28 文献标志码：A 文章编号：2095-2945（2025）20-0099-04

Abstract：Withtherapiddevelopmentofurbanconstruction，thenumberofurbanelevatedbridgesisincreasing.Forbridges withlargespansandsmallradi，stelboxgirderschemesareoftenused.Comparedtoconcretebeams，steeboxbeamshavea lighterselfweightandsmalerverticalreactionforce.Inurbanelevatedbridgetransportation，severevehicleloaddeviationoften occurs.Topreventtheoverallstructuralinstabilityandoverturningofsteeboxbeams，theaccuracyofverticalreactionforceis particularlyimportant;Duetheectsofcentrfugalforceandtemperatureiseandfallthehorzontalsupportreactionforef curvedbridgesisgreaterthanthatofstraightbridges.Thehorizontalforceaffctsthesizeandreinforcementofthelower structure，whichinturnafectstheostofthelowerstructure.Thisstudyanalyzesandanalyzesthemodelingfactorsthathavea significantimpactontheverticalandhorizontalsupportreactionforcesofinclinedcurvedsteelboxgirders.Therelevant experience and conclusions can provide some reference for engineers.

Keywords：inclinedcurvedsteelboxgirder bridge;modeling calculation;supprtreaction；urban viaduct；influencingfactors

由于斜弯钢箱梁桥本身特点，导致其支反力不能像直桥那样容易计算，本次依托某项目，采用MIDAS软件进行了建模计算，着重讲述了恒载、边界条件的正确模对支反力计算结果的重要性。（剩余2663字）