Postearthquake Investigation of a Base-Isolated Building in the 2022 Ms 6.8 Luding Earthquake

IF 2.3 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Journal of Performance of Constructed Facilities Pub Date : 2023-10-01 DOI:10.1061/jpcfev.cfeng-4477

Kaoshan Dai, Yijian Yang, Zhihong He, Tao Li, Peng Chen, Jianze Wang, Jun Xu

引用次数: 0

Abstract

This paper presents the investigation results of a base-isolated RC frame-shear wall structure located in Luding County, Sichuan Province, China, which was damaged by a Ms 6.8 earthquake on September 5, 2022. This recently constructed school office building was about 9 km away from the epicenter. The isolation layer of this building consists of 54 rubber bearings and 12 viscous dampers. These viscous dampers or their connections failed during the earthquake, and the limit state included connection breaking or global buckling of the damper. Also, the superstructure suffered some minor damage. To investigate the cause of structural damages, a nonlinear time-history analysis is conducted using the ground motions recorded by four seismic stations close to the building. The onsite investigation and numerical simulation results revealed the possible reasons for the failure.

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2022年泸定6.8级地震中基础隔震建筑的震后研究

本文介绍了位于中国四川省泸定县的基础隔震RC框架-剪力墙结构的调查结果，该结构在2022年9月5日的6.8级地震中受损。这座新建成的学校办公楼距离震中约9公里。该建筑的隔离层由54个橡胶支座和12个粘性阻尼器组成。这些粘性阻尼器或其连接在地震中失效，其极限状态包括连接断裂或阻尼器整体屈曲。此外，上层建筑遭受了一些轻微的损坏。为了调查结构损坏的原因，利用靠近建筑物的四个地震台站记录的地面运动进行了非线性时程分析。现场调查和数值模拟结果揭示了故障的可能原因。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Performance of Constructed Facilities 工程技术-工程：土木

CiteScore

5.10

自引率

4.00%

发文量

审稿时长

6 months

期刊介绍： The Journal of Performance of Constructed Facilities attempts to improve the quality of the constructed product through interdisciplinary communication. Papers examine the causes and consequences of failures and other performance problems. The principal purpose of the Journal is to disseminate information on failures and performance deficiencies of constructed facilities. The term “failures” in this context may mean catastrophic events, but also includes any performance deficiency from which a significant lesson can be learned, such as serviceability problems. Both the technical causes and procedural causes of failures are of interest. Procedural causes include human errors in design, construction, and/or operation that allow the failures to occur. The Journal welcomes manuscripts that deal with failures, methods of investigation of failures, special techniques for failure investigations, reconstruction and repair, and issues of ethics.