变曲率摩擦摆隔振技术在桥梁抗震中的研究与应用

Research and application of variable curvature friction pendulum in bridge earthquake

采用Abaqus软件对摩擦摆支座进行实体建模,分析其低周往复作用下的滞回性能,研究表明,在设计位移范围内骨架曲线基本表现为双线性折线模型,不能体现变曲率摩擦摆支座的强非线性和刚度软化的特点,仅表现为屈服后刚度和有效刚度较小的双线性滞回模型,可以用曲面高度等效的普通摩擦摆支座去模拟变曲率摩擦摆支座。

Abaqus was used to analyze the hysteretic behavior o f friction-bearing pendulum bearings under low-cycle reciprocating action.The results show that the skeleton curves in the designed displacem ent r仙ge are basically biline虹.The m odel can not reflect the^and stiffness softening characteristics o f the variable curvature friction pendulum,and it only shows the bilinear hysteresis m odel with low postyield stiffness and effective stiffness,so can use the ordinary frictional stabilizing curve with highly equivalent surface.