摘要
隔震结构的地震动输入对于抗震计算的结果有重要的影响。为了解目前隔震结构地震动输入的研究现状,并分析存在的问题,查阅了国内外隔震结构相关文献及设计规范,对比了隔震结构与普通抗震结构的异同,分析了不同隔震结构的特点,总结了地震动的选取和动力计算方法的研究现状,分类对比了国内外规范中对于地震动选取和计算方法的规定。结果表明,在目前隔震结构抗震设计中,输入地震动的选取存在随机性、调幅不合理、数量偏少、大部分研究未考虑竖向地震作用等问题。通过分析存在的问题,以期为研究更加合理的隔震结构地震动输入提供参考。
The ground motion input of the isolated structure has an important influence on the results of the seismic calculation. In order to understand the current research status of ground motion input of isolated structures and analyze the existing problems,the literatures and design specifications of isolated structures at home and abroad were reviewed,and the similarities and differences between isolated structures and common seismic structures were compared. Different isolated structures were analyzed. The characteristics of the selection of ground motion and the research status of dynamic calculation methods were summarized. The classification and comparison of the rules for the selection and calculation of ground motion in domestic and foreign codes were compared. The results show that in the seismic design of the isolated structures,the selection of input ground motion is random,the amplitude modulation is unreasonable,the quantity is too small,and most studies do not consider vertical seismic effects. By analyzing the existing problems,it is expected to provide a reference for studying the ground motion input of a more reasonable isolation structure.
作者
胡进军
梁琰
杨永强
Hu Jinjun;Liang Yan;Yang Yongqiang(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China)
出处
《建筑结构》
CSCD
北大核心
2018年第S2期457-462,共6页
Building Structure
基金
中国地震局工程力学研究所基本科研业务专项(2017A01,2016A01).
关键词
隔震结构
输入地震动
抗震设计
地震动选取
isolated structure
input ground motion
seismic design
selection of ground motion
