用于地震后结构即时初步评估的频谱评估

IF 3.1 2区 工程技术 Q2 ENGINEERING, CIVIL
Mohammad Rabiepour, James Geoffrey Chase, Cong Zhou
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引用次数: 0

摘要

本文介绍了一种简单、高效的基于频谱的方法,用于对受地震影响的结构进行快速初步抗震评估。该方法的性能通过新西兰三座受地震影响严重的建筑物的数据进行了验证,在这些建筑物中,通过主观结果进行的目视检查遗漏了损坏情况,导致决策不准确和延迟,造成了重大的社会和经济损失。这三个建筑物包括:(1) 安装了仪器的新西兰银行 (BNZ) 大楼;(2) 未安装仪器的皇后区购物中心 (QM) 综合大楼;(3) 未安装仪器的坎特伯雷电视台 (CTV) 大楼。在地震多发地区,每次破坏性地震和随后的破坏性余震都要求进行持续监测,以不断评估破坏情况和生命安全风险,本研究利用这些案例强调了结构健康监测(SHM)仪器和可靠的量化震后评估方法的重要性。本研究中简单、低成本的光谱分析清楚地显示了标准目测方法无法完全发现的损坏和老化情况。这一结果凸显了传感器网络和 SHM 仪器的重要性,因此定量的灾后分析可以迅速增强和锁定进一步的、更主观的目视检测结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A spectral assessment for instant preliminary evaluation of structures after seismic events
This article introduces a simple, efficient spectral-based approach for rapid preliminary seismic assessment of earthquake-affected structures. Performance is validated using data from three highly earthquake-affected structures in New Zealand, where visual inspection with subjective outcomes missed damage, resulting in inaccurate and delayed decisions with significant social and economic losses. The three structures considered include (1) the instrumented Bank of New Zealand (BNZ) building; (2) the un-instrumented Queensgate Mall (QM) Complex; and (3) the un-instrumented Canterbury Television (CTV) building. This study uses these cases to highlight the importance of structural health monitoring (SHM) instrumentation and reliable quantified post-earthquake assessment methods in earthquake-prone areas, where each damaging earthquake and subsequent further-damaging aftershocks demand continuous monitoring to continuously assess damage and life safety risk. The simple, low-cost spectral analyses in this study clearly show the existence of damage and deterioration not fully discovered with standard visual inspection methods. This outcome highlights the importance of sensor networks and SHM instrumentation so quantitative, post-event analysis can rapidly augment and target further, more subjective visual inspection results.
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来源期刊
Earthquake Spectra
Earthquake Spectra 工程技术-工程:地质
CiteScore
8.40
自引率
12.00%
发文量
88
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.
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