独柱墩弯桥抗倾覆与曲率半径的关系

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中图分类号：U441 文献标志码：A 文章编号：1004-4345（2025）06-0068-05

AbstractTo investigate theinfluenceofcurvatureradiusontheanti-overturning stabilityof single-columnpiercurvedbridges， thisstudytakesahighwaycurvedbridgewithsingle-columnpiersasacasestudy.Theanti-overturningperformanceisanalyzed basedonbothasimplified modelusingthearea momenttheoryandthecurentbridge designcode.Using thearea moment theory， withthemostufavorableovertuingaxisasthecondition，theself-weightanti-overtuingsafetyfactorsunderdiferentcuvature radiiarecalculated.Theresultsindicatethatthesafetyfactorfirstdecreasesandthen increasesasthecurvatureradiusincreases. Concurently，aseriesoffiniteelementmodelsareestablishedaccordingtothedesigncodetocalculatethebearingreactinsand anti-overtumingstabilitycoeficientsunderecentricloading.Theresultsshowhattheiskofnegativebearingreactionsrisesasthe curvatureadusincreases，whilethentovertuingsabilityoeficientgraduallydecreasesadevenuallylevelsoffAcoparison revealsdiserepanciesinthetrendsbtainedbythtwomethods，primarilyduetoteirdiferentprinciplesforselectingthoveruing axis.

Keywordssingle-columnpier;curvedbridge;anti-overturningstability;curvatureradius;areamomenttheory;finiteelement analvsis

近年来，国内多地先后发生多起独柱墩桥梁倾覆事故。（剩余5175字）