Fragility-based seismic assessment of traditional masonry buildings on Azores (Portugal) using simulated ground-motion records

IF 3.1 2区工程技术 Q2 ENGINEERING, CIVIL

Earthquake Spectra Pub Date : 2024-07-24 DOI:10.1177/87552930241256287

Vasco Bernardo, Shaghayegh Karimzadeh, Daniel Caicedo, Sayed Mohammad Sajad Hussaini, Paulo B Lourenço

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引用次数: 0

Abstract

Traditional unreinforced masonry structures are extremely vulnerable to seismic events, featuring large losses in many countries worldwide. This study focuses on the seismic assessment of a traditional masonry structures located in Faial Island—Azores (Portugal), which was hit by an earthquake of M w = 6.2 on 9 July 1998. A set of analyses was conducted through a probabilistic performance-based seismic approach, employing a stochastic finite-fault ground-motion simulation method to derive region-specific records and nonlinear numerical models to compute the capacity of the building. Subsequently, analytical fragility curves were derived considering different seismic scenarios. The results show a significant probability of the structural typology to reach moderate to extensive damage in the case of the specific earthquake, as observed in reality. The study holds significant importance in regions with limited recorded seismic activity, as they offer potential benefits for seismic risk management and mitigation strategies.

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利用模拟地动记录对亚速尔群岛（葡萄牙）传统砖石结构建筑进行基于易损性的地震评估

传统的非加固砌体结构在地震事件中极其脆弱，在世界许多国家都造成了巨大损失。本研究的重点是对位于葡萄牙法伊亚尔岛的传统砌体结构进行抗震评估，1998 年 7 月 9 日，该岛发生了 M w = 6.2 级地震。通过基于概率性能的抗震方法进行了一系列分析，采用随机有限故障地动模拟方法得出特定地区的记录，并采用非线性数值模型计算建筑物的承载能力。随后，考虑到不同的地震情况，得出了分析脆性曲线。结果表明，在特定地震情况下，结构类型极有可能达到中度至严重破坏，这与实际情况相符。这项研究对地震活动记录有限的地区具有重要意义，因为它们为地震风险管理和减灾战略提供了潜在的益处。

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

Earthquake Spectra 工程技术-工程：地质

CiteScore

8.40

自引率

12.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Earthquake Spectra, the professional peer-reviewed journal of the Earthquake Engineering Research Institute (EERI), serves as the publication of record for the development of earthquake engineering practice, earthquake codes and regulations, earthquake public policy, and earthquake investigation reports. The journal is published quarterly in both printed and online editions in February, May, August, and November, with additional special edition issues. EERI established Earthquake Spectra with the purpose of improving the practice of earthquake hazards mitigation, preparedness, and recovery — serving the informational needs of the diverse professionals engaged in earthquake risk reduction: civil, geotechnical, mechanical, and structural engineers; geologists, seismologists, and other earth scientists; architects and city planners; public officials; social scientists; and researchers.