超高应力隔震组合支座的基本力学性能研究  

Study on fundamental mechanic properties for composed bearing with high compression stress

作　　者：杨巧荣[1] 饶聪[2] 何文福[1] 刘文光[1] 

机构地区：[1]上海大学土木工程系,上海200072 [2]中核集团核工业第八研究所,上海200018

出　　处：《世界地震工程》2017年第1期158-165,共8页World Earthquake Engineering

基　　金：国家自然科学基金资助项目(51478257);上海自然科学基金项目(15ZR1416200);高等学校博士学科点专项科研基金(20133108110024)

摘　　要：提出了1种超高应力隔震组合支座高性能隔震系统,该隔震系统是由多个橡胶支座按设计所需规则组合而成。建立了高性能隔震系统回转刚度理论公式、水平刚度、竖向刚度和屈曲应力的相关理论公式,并采用300型缩小试件对HPIS高性能隔震系统组合支座进行了竖向刚度、屈服后刚度、屈服力等基本性能和相关性的低周反复加载试验。研究结果表明:高性能隔震系统组合支座相对单体橡胶支座,在回转刚度、压应力稳定性及屈曲应力等方面均有显著提升。The introduction of a high performance isolation system is provided, which is composed of multiple rubber bearings according to certain rules. The theoretical formulas of rotary stiffness, horizontal stiffness, vertical stiffness and buckling stress are given. The basic performance and correlation of HPIS＇ s vertical stiffness, post- yield stiffness and yield force are studied by the repeated low cycle loading test on reduced specimens with 300mm diameter. The results show that the performance in rotary stiffness, compressive stress stability and buckling stress of HPIS increase significantly relative to single rubber bearing.

关 键 词：高性能隔震系统 压应力稳定性 回转刚度 水平刚度 

分 类 号：TU591[建筑科学—建筑技术科学]