平稳随机地震激励下TMD-基础隔震混合控制体系的减震效果分析

英文篇名：Effectiveness analysis of TMD-base isolation hybrid control system under stationary stochastic seismic excitation
中文刊名：合肥工业大学学报(自然科学版)
英文刊名：Journal of Hefei University of Technology(Natural Science)
作者：李慧 ; 王亚楠 ; 杜永峰
英文作者：LI Hui1 ; 2 ; WANG Ya-nan1 ; DU Yong-feng1 ; 2(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)
中文关键词：混合控制体系 ; 随机响应 ; 优化 ; 功率谱 ; 均方根
英文关键词：hybrid control system ; stochastic response ; optimization ; power spectrum ; root-mean-square
出版日期：2013-02-28
机构：兰州理工大学防震减灾研究所;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;
年：2013
期：02
出版单位：合肥工业大学学报(自然科学版)

摘要

文章对随机地震激励下TMD-基础隔震混合控制体系的减震效果进行了研究,建立了混合控制体系的运动方程,运用状态空间法求解该混合控制体系的随机响应,得到体系各层的响应功率谱和响应均方根值;给出了在上部结构位移最优化条件下求解体系中TMD最优参数的计算表达式;通过与基础隔震结构对比分析了该混合控制体系的减震效果。分析结果表明:混合控制体系在使隔震层位移得到减小的同时,可以更有效地控制上部结构的地震响应;对于位于不同场地上的结构,该混合控制体系仍能发挥一定的减震效果。
The vibration control effectiveness of the TMD-base isolation hybrid control system under stationary stochastic seismic excitation is studied.The motion equation of the hybrid control system is established,the stochastic response of the hybrid control system is solved by using the state-space method,and the power spectrum density and root-mean-square of the hybrid control system seismic response are obtained.The computation expression used in solving the TMD optimum parameters under the superstructural displacement optimization condition is given,and the vibration control effectiveness of the hybrid control system is analyzed and compared with base isolation structure.The analysis results indicate that the hybrid control system can reduce the displacement of isolation layer and control the superstructural seismic response more effectively,and the hybrid control system still behaves well when located on different site soil.

引文

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