裂纹对铅芯橡胶隔震支座竖向力学性能的影响  

Effect of Cracks on the Vertical Mechanical Properties of Lead-core Rubber Isolation Bearings

作　　者：田如意 刘秀[2] 刘琛 TIAN Ruyi;LIU Xiu;LIU Chen(College of Civil Engineering,Xiangtan University;School of Mechanical Engineering and Mechanics,Xiangtan University)

机构地区：[1]湘潭大学土木工程学院 [2]湘潭大学机械与力学学院

出　　处：《广东建材》2025年第4期107-110,共4页Guangdong Building Materials

摘　　要：基于含裂纹的铅芯橡胶隔震支座三维有限元模型,研究裂纹对铅芯橡胶隔震支座竖向刚度的影响,模拟时考虑裂纹位于不同叠层和同一叠层不同裂纹位置的情况。模拟结果表明,裂纹的出现降低了支座的竖向刚度,位于顶(底)部的裂纹对支座产生的破坏更大,导致竖向刚度更小;竖向裂纹相对于横向裂纹更容易发生裂纹扩展,导致支座竖向刚度更小。Based on the three-dimensional finite element model of lead-core rubber isolation bearing containing cracks,the effect of cracks on the vertical stiffness of lead-core rubber isolation bearing is investigated,and the simulation takes into account the cases of cracks located in different stacks and different crack positions in the same stack.Simulation results show that the presence of cracks reduces the vertical stiffness of the bearing,and cracks located in the top(bottom)part produce more damage to the bearing,resulting in less vertical stiffness;The vertical cracks are more prone to crack propagation relative to transverse cracks,resulting in less vertical stiffness of the support.

关 键 词：铅芯橡胶隔震支座 裂纹 有限元模拟 竖向力学性能 

分 类 号：TU3[建筑科学—结构工程]