[1]颜桂云,肖晓菲,潘钦锋,等.远场长周期地震动下高层摩擦摆基础隔震结构的减震性能[J].地震工程与工程振动,2019,39(02):099-110.[doi:10.13197/j.eeev.2019.02.99.yangy.011]
 YAN Guiyun,XIAO Xiaofei,PAN Qinfeng,et al.Seismic absorption performance of base-isolated high-rise structures using friction pendulums subjected to far-field long-period ground motions[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(02):099-110.[doi:10.13197/j.eeev.2019.02.99.yangy.011]
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远场长周期地震动下高层摩擦摆基础隔震结构的减震性能
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年02
页码:
099-110
栏目:
论文
出版日期:
2019-04-30

文章信息/Info

Title:
Seismic absorption performance of base-isolated high-rise structures using friction pendulums subjected to far-field long-period ground motions
作者:
颜桂云1 肖晓菲1 潘钦锋12 方艺文1
1. 闽台合作土木工程技术福建省高校工程研究中心, 福建工程学院 土木工程学院, 福建 福州 350118;
2. 福州大学 土木工程学院, 福建 福州 350116
Author(s):
YAN Guiyun1 XIAO Xiaofei1 PAN Qinfeng12 FANG Yiwen1
1. Fujian-Taiwan Cooperative Institute of Civil Engineering Technology in Universities of Fujian Province, School of Civil Engineering, Fujian University of Technology, Fuzhou 350118, China;
2. School of Civil Engineering, Fuzhou University, Fuzhou 350116, China
关键词:
远场长周期地震动类谐波成份摩擦摆隔震高层结构减震性能
Keywords:
far-field long-period ground motionsharmonic-alike componentsfriction pendulum isolationhigh-rise structureshock absorption performance
分类号:
TU352.1
DOI:
10.13197/j.eeev.2019.02.99.yangy.011
摘要:
高层摩擦摆基础隔震结构在远场长周期地震动长持时的长周期成份作用下,尤其是类谐波成份作用下,隔震层上部结构的减震性能将可能无法得到保证,且摩擦摆支座亦可能产生超限变形。为此,远场长周期地震动作用下高层摩擦摆基础隔震结构的减震性能需进一步探讨。通过一幢框架-核心筒高层摩擦摆基础隔震结构的非线性地震响应分析,揭示远场长周期地震动,尤其是在类谐和长周期地震动下框架-核心筒高层摩擦摆基础隔震结构的地震响应规律。提出在隔震层增设黏滞阻尼器对结构的地震响应进行控制。结果表明:摩擦摆隔震不能满足结构在远场类谐和长周期地震动作用的减震要求,而且还将放大其作用下结构的非线性响应;组合隔震结构能较有效地控制长周期地震动、特别是远场类谐和长周期地震作用下隔震层上部结构以及隔震层的弹塑性地震响应,尤其可显著减小隔震支座的最大变形,使其不超越隔震支座的容许变形值。
Abstract:
The shock absorption performance of the upper structure above the isolation layer may not be guaranteed when the base-isolated high-rise structures using friction pendulums were subjected to far-field long-period ground motions featured by long duration and low frequency components, especially harmonic-alike components. The deformation of friction pendulum bearing may also exceed the allowed limit, resulting in the isolation layer destruction. To this end, the shock absorption performance of base-isolated high-rise structures using friction pendulums subjected to far-field long-period ground motions should be further explored. By nonlinear seismic response analysis of a frame-core tube base-isolated high-rise structure using friction pendulums, the impacts of far-field long-period ground motions, especially harmonic-alike components on the seismic response law were revealed. Viscous dampers were proposed to add in the isolation layer to control the seismic response. The results show that friction pendulum isolation can not meet the shock absorption requirements of structures subjected to far-field harmonic-alike long-period earthquakes, and will enlarge the nonlinear response of structures. Further, the combined isolation can effectively control the nonlinear seismic response of the upper structure above the isolation layer and the isolation layer when subjected to far-field long-period ground motions, especially harmonic-alike components. The maximum deformation of the isolation bearings is reduced so that it does not exceed the allowable deformation value of the isolation bearing.

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备注/Memo

备注/Memo:
收稿日期:2018-5-6;改回日期:2018-10-11。
基金项目:国家自然科学基金项目(51878174);福建省高校青年自然基金重点项目(JZ160464);福建省自然科学基金引导性项目(2016H0004)
作者简介:颜桂云(1974-),男,教授,博士,主要从事复杂结构抗震与减震隔震,装配式混凝土结构研究.E-mail:yanguiyun@sina.com
更新日期/Last Update: 1900-01-01