学术论文详情

摘要：In order to further develop the flexural-shear numerical analysis model for reinforced concrete(RC)bridge piers with nonlinear shear effect considered,the shear and flexural deformations of 76 RC bridge piers under ultimate loads were calculated based on the modified compression field theory(MCFT)and fiber beam-column element model respectively.And a discrimination criterion governing flexural,flexural-shear or shear failure modes of RC bridge piers was proposed by the ratio between shear and flexural deformations.An improved flexuralshear numerical analysis model for bridge pier was established according to different failure modes of the piers,which could consider the coupling relation between flexural and shear deformations of the piers.The simulated hysteretic curves by the improved flexural-shear analysis model were compared with test results.The results show that the shear to flexural deformation ratio of 0.2and 1.5could be taken as the discrimination criterion governing flexural,flexural-shear,and shear failure modes of the piers.Also,the simulated hysteretic curves of the bridge piers withshear and flexural-shear failure modes by the improved analysis model agree well with test results.