Review on quick safety assessment of building structures in complex urban environment after extreme explosion events

IF 2.1 Q2 ENGINEERING, CIVIL International Journal of Protective Structures Pub Date : 2022-05-23 DOI:10.1177/20414196221104146
Y. Shi, Shaozeng Liu, Zhongxian Li, Yang Ding
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引用次数: 1

Abstract

Extreme explosion events result in demands for emergency rescue service. From the civil engineering perspective, a quick safety assessment of building structures in the explosion’s vicinity will provide the emergency rescue committee with concrete support to make scientific decisions. In this paper, three primary issues, namely, inverse analysis of explosive characteristics, blast wave propagation in complex urban areas and blast-induced damage identification, are reviewed. These are often performed stepwise and form a multi-step whole to assist the emergency rescue service. The paper begins by introducing the inverse analysis of explosives based on craters, building damages and seismic or acoustic records. In this step, explosive characteristics, for example, charge type, original time, yield and location, could be produced and input into blast load calculation in the next step. Then, the existing literature on blast wave propagation and blast load determination is presented with close attention to complex urban environments. It shows that the current study remains in its infancy and relies on advancement in computational fluid dynamics (CFD). Besides, pressure–impulse (P-I) diagrams which predict the structural damage based on the calculated blast loads are illustrated. Onsite damage detection techniques, such as visual inspection, non-destructive testing (NDT) and vibration-based methods, are also discussed. The paper ends with a discussion of the shortcomings of previous work and the outlooks of further work.
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极端爆炸事件后复杂城市环境中建筑结构快速安全评估研究综述
极端爆炸事件导致了对紧急救援服务的需求。从土木工程的角度来看,对爆炸附近的建筑结构进行快速安全评估,将为应急救援委员会做出科学决策提供具体支持。本文综述了三个主要问题,即爆炸特性的反分析、爆炸波在复杂城市地区的传播和爆炸损伤识别。这些通常是逐步进行的,并形成一个多步骤的整体,以协助紧急救援服务。本文首先介绍了基于弹坑、建筑物损伤和地震或声学记录的炸药反演分析。在这一步骤中,可以产生爆炸特性,例如装药类型、初始时间、产量和位置,并将其输入下一步的爆炸载荷计算中。然后,针对复杂的城市环境,介绍了现有的关于爆炸波传播和爆炸载荷确定的文献。这表明,目前的研究仍处于初级阶段,并依赖于计算流体动力学(CFD)的进步。此外,还举例说明了基于计算的爆破载荷预测结构损伤的压力-脉冲(P-I)图。还讨论了现场损伤检测技术,如目视检查、无损检测和基于振动的方法。文章最后讨论了以往工作的不足和今后工作的展望。
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
CiteScore
4.30
自引率
25.00%
发文量
48
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