隔震层构造不规范对隔震结构减震性能影响研究*
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（1 兰州理工大学防震减灾研究所， 兰州 730050；2 兰州理工大学西部土木工程防灾减灾教育部工程研究中心， 兰州 730050）［摘要］为研究隔震层构造不规范对隔震结构减震性能的影响，以隔震层构造不规范结构为研究对象，建立双向水平地震作用下的运动方程。用SAP2000软件建立分析模型，对7种常见的隔震构造不规范现象产生的动力响应原理进行定量化分析。对各种构造不规范下结构顶层加速度及层间位移的响应峰值进行对比。用时程分析法对比分析了非隔震结构、隔震结构及隔震层构造不规范结构三者上部结构的地震响应。结果表明，隔震层构造不规范严重影响隔震结构的减震效果。［关键词］隔震层; 构造; 地震响应; 对比分析中图分类号：TU352.12 文献标识码：A 文章编号：1002-848X(2013)21-0074-04Study on effect of irregularities of isolation layer on performance of isolation structuresDu Yongfeng1,2, Zhu Xiang1, Hu Lin1（1 Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou 730050, China; 2 Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China）Abstract: In order to study the effect of irregularities of isolation layer on isolation performance of isolation structures, the equation of motion under the bidirectional horizontal seismic was established. The analytical model was set by SAP2000 finite element analysis software. Quantitative analyses were made on the dynamic response of seven kinds of inaccurate isolation structures. Comparisons were made on response peaks of the top floor acceleration and interlayer displacement in different conditions of inaccurate structures. Time history analysis method was used to analyze the seismic responses of non-isolated structure, isolation structure and inaccurate isolation structure. The results show that the irregularities of isolation layer affect the isolation performance seriously.Keywords: isolation layer; construction; seismic response; comparative analysis*国家自然科学基金（50978130，51178211）。作者简介：杜永峰，博士，教授，博士生导师，Email：178364214@qq.com。参考文献［1］郭小冬,王志涛,吴树森.建筑隔震构造与施工要求［J］.工程质量，2010,28(2):48-50.［2］周玮.基础隔震中的建筑构造［J］.东南大学学报：自然科学版,2002,32(6):969-972.［3］刘云涛,杨雅静. 基础隔震结构的管线处理［J］.山西建筑，2010，36(22)：55-56.［4］王朝晖,汪梦甫.双向水平地震作用下非对称框架结构抗震分析简化方法［J］. 湖南大学学报： 自然科学版，2007,34(4):1-4.
