铅芯橡胶支座剪切性能影响因素分析  

Influence factor on shear properties of lead-rubber bearings

作　　者：王建强[1] 辛伟[1] 李政[1] 赵卓[2] 

机构地区：[1]郑州大学土木工程学院,河南郑州450001 [2]宁波工程学院建筑工程学院,浙江宁波315211

出　　处：《世界地震工程》2014年第3期77-81,共5页World Earthquake Engineering

基　　金：国家自然科学基金(U1204502);河南省重点科技攻关项目(102102210062)

摘　　要：对铅芯橡胶支座进行了有限元分析,研究了水平加载频率、橡胶剪切模量和铅芯直径对支座剪切性能的影响,分析表明水平加载频率对支座剪切性能的影响极小;橡胶剪切模量对支座屈服力的影响极小,但随着橡胶剪切模量的增大,支座的屈服后刚度和水平等效刚度增大,支座的等效阻尼比减小;随着铅芯直径的增大,支座的屈服力、水平等效刚度和等效阻尼比增大,支座的屈服后刚度降低。The finite element analysis of the lead - rubber bearings was carried out, the influence of horizontal loading frequence, rubber shear modulus and lead core diameter on the shear properties about lead -rubber bear- ings were studied. The results show that horizontal loading frequence has little effect on the shear properties of bear- ings. The rubber shear modulus has little effect on the yield force, and as the rubber shear modulus increasing, the post - yield stiffness and the horizontal equivalent stiffness increase, the equivalent damping ratio decreases. As the lead core diameter increasing, the yield force, the horizontal equivalent stiffness and theequivalent damping ratio increase, the post- yield stiffness decreases.

关 键 词：铅芯橡胶支座 剪切性能 水平加载频率 橡胶剪切模量 铅芯直径 

分 类 号：TU352.1[建筑科学—结构工程]