[1]徐熙,蒲武川.考虑地震动持时影响的非结构构件加速度响应预测[J].地震工程与工程振动,2019,39(03):230-237.[doi:10.13197/j.eeev.2019.03.230.xux.024]
 XU Xi,PU Wuchuan.Estimation of the acceleration of non-structural component considering the effect of duration of earthquake ground motion[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(03):230-237.[doi:10.13197/j.eeev.2019.03.230.xux.024]
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考虑地震动持时影响的非结构构件加速度响应预测
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年03
页码:
230-237
栏目:
论文
出版日期:
2019-06-30

文章信息/Info

Title:
Estimation of the acceleration of non-structural component considering the effect of duration of earthquake ground motion
作者:
徐熙 蒲武川
武汉理工大学 土木工程与建筑学院, 湖北 武汉 430070
Author(s):
XU Xi PU Wuchuan
School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
关键词:
持续时间非结构构件楼层反应谱楼层加速度谐振激励
Keywords:
ground motion durationnon-structural componentfloor response spectrafloor accelerationresonant excitation
分类号:
TU31
DOI:
10.13197/j.eeev.2019.03.230.xux.024
摘要:
持续时间是地震动的关键参数之一,对主体结构的振动加速度峰值和振动持时有重要影响,并进而影响到非结构构件的地震加速度响应。本文以附加非结构构件的单自由度结构系统为对象,通过数值分析考察了地震动持时对加速度响应的影响规律。分析了共振状态简谐激励持时对结构系统加速度放大率的影响,结果表明激励持时增加时,非结构构件加速度峰值增长速度显著高于主体结构加速度峰值增长速度。研究了具有不同持时的人工地震波作用下结构的楼层反应谱特征,并建立了地震动持时对加速度响应影响的量化关系,在既有楼层反应谱估计方法的基础上提出了考虑地震动持时影响的评估方法。计算结果表明本文方法能较准确地预测不同持时地震动作用下的楼层反应谱。
Abstract:
The duration is one of the key parameters of earthquake ground motion. It has great influence on the vibration amplitude and duration of the main structure, and thus affects the acceleration response of non-structural components. A single-degree-of-freedom structure with added non-structural component is considered in this study, and the effect of the duration of excitation on the acceleration of non-structural component is analyzed. The acceleration responses of structural system in resonance are analyzed, and it is shown that as the duration of harmonic excitation increases, the acceleration of non-structural component increases more significantly than that of main structure. The floor acceleration response spectra of structure subjected to artificial ground motions are also analyzed, and the effect of the significant duration of ground motion on floor response spectra is obtained. The previously proposed direct estimation method for floor response spectra is modified by considering the effect of duration. The numerical results prove that the proposed method simulates the acceleration response of non-structural component with better accuracy.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-12-4;改回日期:2019-3-8。
基金项目:湖北省自然科学基金项目(2015CFB489);中央高校基本科研业务费(2019III109CG)
作者简介:徐熙(1995-),女,硕士研究生,主要从事结构抗震减震研究.E-mail:497018074@qq.com
通讯作者:蒲武川(1980-),男,副教授,博士,主要从事结构抗震减震研究.E-mail:puwuchuan@whut.edu.cn
更新日期/Last Update: 1900-01-01