[1]王海东,武战战,刘巴黎.地震动输入对中长周期结构抗倒塌性能评估的影响[J].地震工程与工程振动,2019,39(03):176-184.[doi:10.13197/j.eeev.2019.03.176.wanghd.018]
 WANG Haidong,WU Zhanzhan,LIU Bali.Influence of ground motion input on evaluation of anti-collapse performance of medium-long period structure[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(03):176-184.[doi:10.13197/j.eeev.2019.03.176.wanghd.018]
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地震动输入对中长周期结构抗倒塌性能评估的影响
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年03
页码:
176-184
栏目:
论文
出版日期:
2019-06-30

文章信息/Info

Title:
Influence of ground motion input on evaluation of anti-collapse performance of medium-long period structure
作者:
王海东12 武战战2 刘巴黎2
1. 建筑安全与节能教育部重点实验室(湖南大学), 湖南 长沙 410082;
2. 湖南大学 土木工程学院, 湖南 长沙 410082
Author(s):
WANG Haidong12 WU Zhanzhan2 LIU Bali2
1. Key Laboratory of Building Safety and Energy Efficiency of Ministry of Education(Hunan University), Changsha 410082, China;
2. College of Civil Engineering, Hunan University, Changsha 410082, China
关键词:
钢结构反应谱近场脉冲地震动易损性分析抗倒塌储备系数
Keywords:
steel structureresponse spectrumnear-field pulse seismic recordsvulnerability analysiscollapse margin ratio
分类号:
TU311.3
DOI:
10.13197/j.eeev.2019.03.176.wanghd.018
摘要:
以太平洋地震研究中心下载的800条地震动记录为研究对象,验证了PGV/PGA比值,震中距和震级三个条件作为近场脉冲地震动选取原则的合理性。根据此原则选取其中10条近场脉冲地震动,同时选取ATC-63推荐的10条近场脉冲地震动与10条远场地震动。考察了三类地震动基本信息、反应谱及与规范谱频谱特性的差异性,进而对9层Benchmark钢结构模型进行增量动力分析,通过易损性曲线和结构抗倒塌系数研究不同地震动对中长周期结构抗倒塌性能评估的影响。研究结果表明:在中长周期段,本文选取的地震动平均反应谱值远大于其余两类地震动与中美规范反应谱,且在速度与位移反应谱中更为明显;地震动的选取对中长周期结构的抗震抗倒塌性能评估具有较大影响,近场脉冲地震动对中长周期结构作用最显著,结构迅速达到倒塌状态。
Abstract:
800 seismic records are downloaded from the Pacific Earthquake Engineering Research Center as the research object, the three conditions of PGV/PGA ratio, epicentral distance and magnitude are verified as the rationality of the selection principle of near-field pulse seismic records. According to this principle, 10 near-field pulse seismic records are selected, while 10 near-field pulse-type seismic records and 10 far-field seismic records recommended by ATC-63 are also selected. The differences between the basic information and response spectrum of the three types of ground motions and the differences in the spectrum characteristics between the response spectrum and the design response spectrum of Chinese Seismic Code and ASCE7-10 are investigated. The Incremental dynamic analysis of the 9-story Benchmark steel structure model is carried out. The effects of different ground motions on the evaluation of the anti-collapse performance of medium-long period structures are studied by the vulnerability curve and the collapse margin ratio. The research indicates that in the medium-long period, the ground motions average response spectrum value selected in this paper is much larger than the other two types of ground motions and the design response spectrum, and more obvious in the velocity and displacement response spectrum. The selection of ground motions has a great influence on the evaluation of the anti-seismic collapse performance of the medium-long period structure, the near-field pulse ground motions have the most significant effect on the medium-long period structure, and the structure quickly reaches the collapsed state.

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备注/Memo

备注/Memo:
收稿日期:2018-11-2;改回日期:2019-1-25。
基金项目:新世纪优秀人才支持计划(NCET-13-0190)
作者简介:王海东(1976-),男,副教授,博士,主要从事结构抗震性能和土-结构相互作用研究.Email:whdwang@hnu.edu.cn
更新日期/Last Update: 1900-01-01