基于RC框架结构隔震剪力分析  

Analysis of Shear Force of Seismic Isolation Based on RC Frame Structure System

作　　者：李良松[1] 刘一虹 朱敏[1] LI Liang-song;LIU Yi-hong;ZHU Min(Institute of Sponge City Construction,Pingxiang University,Pingxiang Jiangxi 337000,China;Jiangxi University of Engineering,College of Civil Engineering,Xinyu Jiangxi 338000,China)

机构地区：[1]萍乡学院海绵城市研究院,江西萍乡337000 [2]江西工程学院土木工程学院,江西新余338000

出　　处：《萍乡学院学报》2018年第3期33-36,共4页Journal of Pingxiang University

摘　　要：近年来因为地震的巨大破坏,人们对结构的安全性更加重视。现今隔震技术应运而生并在近些年开始应用于实际工程中,基于大型有限元分析软件OpenSees对五层隔震RC(钢筋混凝土)框架结构在七度罕遇地震波(峰值加速度220gal)作用下进行动力时程分析。研究表明采用隔震框架结构在地震波作用下,相对传统抗震结构抗震结构,各楼层剪力明显减小,随着隔震支座位置的升高,楼层间的剪力减小幅度也随着减小,隔震结构在隔震层上部的减震效果比下部结构明显,隔震层位置处的楼层剪力减小最明显,具有重要工程实践价值。In recent years, because of suffering a lot from the earthquake, people pay more attention to structural safety. Nowadays, seismic isolation technology has come into being and has been applied in practical engineering. Based on the large finite element analysis software---OpenSees, the analysis of dynamic time history is carried out on the five-story RC（reinforce concrete）frame structure under the action of rare earth seismic wave（peak acceleration 220 gal）. The results show that under the action of seismic waves, the shear force of each floor in the seismic isolation structure reduces obviously, compared with the traditional earthquake-resistant structure. With the increase of the isolation bearing position, the decrease of the shear force between the floors decreases. The damping effect of the small and isolated structure on the upper part of the isolation layer is more obvious than that of the lower part, and the shear force at the isolation layer is the most obvious. The result of study has important engineering value for practical engineering application.

关 键 词：地震波 隔震支座 时程分析 RC框架结构 

分 类 号：TU375.4[建筑科学—结构工程]