Seismic damage analyses of reinforced concrete frame structures considering multiple aftershocks

被引：0
|
作者：
Yu X. [1 ]
Ma F. [2 ]
Lü D. [1 ]
机构：
[1] Key Lab of Structures Dynamic Behavior and Control of China Ministry of Education, Harbin Institute of Technology, Harbin
[2] China National Nuclear Power Engineering Co., Ltd., Zhengzhou Branch, Zhengzhou
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2020年 / 41卷
关键词：
Aftershock; Damage index; Mainshock-aftershock sequence; Reinforced concrete frame; Seismic damage;
D O I：
10.14006/j.jzjgxb.2020.S2.0003
中图分类号：
学科分类号：
摘要：
Multiple aftershocks are generally triggered by a strong earthquake. Influences of the mainshock-aftershock sequences including multiple aftershocks on structural performance were investigated. A reinforced concrete frame structure was selected as the target building. A total of 112 earthquake sequences, each of which including 3 aftershocks, were selected as earthquake inputs. The cumulative structural damages due to mainshock-aftershock sequences were obtained in terms of maximum interstory drift angle, maximum top displacement ratio and the modified Park-Ang damage index. The obtained accumulative damages of structures were further compared with those subjected to the mainshock-aftershock sequences considering the single aftershock with the largest peak ground acceleration. Through the comparison, it is indicated that the strongest aftershock plays a dominant role in the structural damages due to mainshock-aftershock sequences, since no significantly additional damages are caused by the multiple aftershocks. © 2020, Editorial Office of Journal of Building Structures. All right reserved.
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页码：19 / 26
页数：7
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