A review on close-in blast performance of RC bridge columns

IF 7.4 2区 工程技术 Q1 ENGINEERING, CIVIL Journal of Traffic and Transportation Engineering-English Edition Pub Date : 2023-08-01 DOI:10.1016/j.jtte.2023.07.001
Sujing Yuan , Yazhu Li , Zhouhong Zong , Minghong Li , Yajun Xia
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Abstract

In recent decades, the increase in terrorist attacks highlights the necessity and importance of understanding of structural performance under accidental and intentionally malicious blast loads. As an important part of transportation infrastructure, bridges would inevitably suffer explosion hazards especially close-in explosion. Reinforced concrete (RC) bridge column is the most critical components of bridge structures, which is more prone to severe local damage under the action of close-in blast loading and can lead to progressive collapse with catastrophic consequences in most cases. Therefore, the blast performance of RC bridge columns under close-in explosions is of particular concern. Towards a better RC bridge column protection against close-in blast loadings, efforts have been mainly devoted to understanding dynamic response predictions of RC columns, numerical simulation techniques of close-in explosion and damage assessment of blast-damaged RC columns. This article presents a state-of-the-art review of the research status of RC columns subjected to close-in blast loads. The blast loading, experimental study and failure mode, uncoupled and coupled simulation method, damage assessment based on residual axial capacity, vulnerability analysis and machine learning are considered and reviewed. The merits and defects of the existing approaches are discussed, and some suggestions for possible improvement are proposed. Further investigation into the future development of this topic has also been identified.

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钢筋混凝土桥梁立柱近炸性能研究综述
近几十年来,恐怖袭击事件的增加凸显了了解意外和故意恶意爆炸荷载下结构性能的必要性和重要性。桥梁作为交通基础设施的重要组成部分,不可避免地会发生爆炸危险,尤其是在爆炸附近。钢筋混凝土(RC)桥柱是桥梁结构中最关键的构件,在近距离爆炸荷载作用下更容易发生严重的局部破坏,在大多数情况下会导致渐进式倒塌,造成灾难性后果。因此,钢筋混凝土桥柱在近距离爆炸作用下的爆破性能尤其受到关注。为了更好地保护钢筋混凝土桥柱免受近距离爆炸荷载的影响,人们主要致力于了解钢筋混凝土柱的动力响应预测、近距离爆炸的数值模拟技术以及爆炸损伤钢筋混凝土柱损伤评估。本文对钢筋混凝土柱在近距离爆炸荷载作用下的研究现状进行了综述。对爆炸载荷、实验研究和失效模式、解耦和耦合模拟方法、基于剩余轴向承载力的损伤评估、易损性分析和机器学习等进行了考虑和综述。讨论了现有方法的优缺点,并提出了一些可能的改进建议。还确定了对该主题未来发展的进一步调查。
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来源期刊
CiteScore
13.60
自引率
6.30%
发文量
402
审稿时长
15 weeks
期刊介绍: The Journal of Traffic and Transportation Engineering (English Edition) serves as a renowned academic platform facilitating the exchange and exploration of innovative ideas in the realm of transportation. Our journal aims to foster theoretical and experimental research in transportation and welcomes the submission of exceptional peer-reviewed papers on engineering, planning, management, and information technology. We are dedicated to expediting the peer review process and ensuring timely publication of top-notch research in this field.
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