层间隔震结构的非线性随机地震反应分析

英文篇名：STOCHASTIC EARTHQUAKE RESPONSES OF NON-LINEAR STORY ISOLATION STRUCTURE
中文刊名：工业建筑
英文刊名：Industrial Construction
作者：张颖 ; 周福霖 ; 谭平
英文作者：Zhang Ying~1 Zhou Fulin~2 Tan Ping~2(1.College of Civil Engineering ; Hunan University ; Changsha 410082 ; China ; 2.Guangdong Key Laboratory of Earthquake Engineering & Applied Technique ; Guangzhou University ; Guangzhou 510405 ; China)
中文关键词：层间隔震 ; 随机地震 ; 非线性 ; 参数分析
英文关键词：story isolation ; stochastic earthquake ; non-linear ; parameter analysis
出版日期：2009-05-20
机构：湖南大学土木工程学院;广州大学广东省地震工程与应用技术重点实验室;
年：2009
期：05
出版单位：工业建筑

摘要

采用非平稳的Kanai-Tajimi随机地震模型来描述实际的地面运动,利用Bouc-Wen光滑型滞变恢复力模型模拟隔震层和实际结构的本构特性,通过随机等效线性化方法对层间隔震结构的非线性双质点简化模型进行了参数敏感性分析。结果表明:层间隔震结构主要以改变结构的自振特性和通过隔震层的耗能来达到减震的目的,随着质量比的变化,减震机理的侧重点又有所不同。
The non-stationary Kanai-Tajimi model is adopted to simulate the earthquake ground acceleration.In order to describe the intrinsic behavior of the isolation and the structure,a smooth hysteretic restoring model(Bouc-Wen) is introduced.The parameter analysis of the non-linear story isolation structure simulated by two-degree of freedom model is proposed using the equivalent stochastic linearization method.The results demonstrate that the earthquake responses of the story isolation structure are attenuated by shifting the structure's nature vibration characteristic and by the energy dissipation of isolation.Different mass ratio has different focus on control mechanism.

引文

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