软钢-滚动隔震支座的力学性能分析  

Mechanic property analysis of mild steel-rolling isolation bearing

作　　者：李雄彦[1] 解朋[1] 薛素铎[1] 

机构地区：[1]北京工业大学城市与工程安全减灾省部共建教育部重点实验室,北京100124

出　　处：《地震工程与工程振动》2014年第6期59-65,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金资助项目(51278008);长江学者和创新团队发展计划资助项目;高等学校博士点学科专项科研基金资助项目(20121103110021);2011年北京市教育委员会科技计划面上资助项目;北京市委组织部优秀人才资助项目

摘　　要：针对大跨空间结构的结构特点和纯滚动隔震体系的不足,提出软钢-滚动隔震支座,并根据隔震支座的受力特点,建立软钢的力学分析模型;依据赫兹接触理论,计算滚珠静载荷下的特征参数。同时,运用有限元软件ANSYS模拟隔震支座的静荷载作用下力学特征和滞回特性,获得其主要力学性能参数,并与所建立力学分析模型及赫兹理论进行对比分析,二者基本一致。分析结果表明,本支座具有良好的受力性能和理想的滞回耗能性能,滚珠滞回耗能性能很低。According to the characteristics of large-span spatial structure and the shortcoming of pure rolling isola- tion system, a concept design of Mild Steel-Rolling Isolation （MSRI） bearing is put forward in this paper. The me- chanical model is established on the basis of the stress characteristics. The characteristic parameters of rolling under static load are calculated on the basis of Hertz contact theory. Meanwhile, the mechanical characteristics of the bearing under static loads and hysteretic characteristics are numerically simulated by the FEM ANSYS to obtain the main mechanical parameters of this bearing. These parameters are in good agreement with the results from the es- tablished theoretical model. It is indicated that the theoretical model is agreeable to the FEM analysis. In brief, it is shown that the bearing shares good mechanical properties and ideal hysteretic characteristics.

关 键 词：软钢 滚动隔震 赫兹理论 接触分析 

分 类 号：TU375.4[建筑科学—结构工程] TU352.1