空心圆端型桥墩动力弹塑性分析

【摘要】 针对桥墩常用的空心圆端型截面,选取不同的壁厚,采用非线性时程方法对(28+35+28)m三跨连续梁桥进行动力弹塑性分析,分别得到桥墩弹塑性铰转角、墩底剪力、墩底弯矩、墩顶位移时程,结果表明,空心截面壁厚取0.6m时,桥墩还能承受更强的地震。更多还原

【Abstract】 On the commonly used hollow round end-section,adopting different wall-thickness,the author makes a dynamic elastoplastic analysis to three-span continuous beam bridge which covers the area of(28+35+28) m by means of nonlinear time-history approach.According to the a series of calculated statistics about hinge corner,end of pier shear,pier-end bending moment,pier top displacement time history,the author reaches the conclusion that pier could still withstand more damaging earthquake if the wall-thickness of hollow section is of 0.6m.更多还原