Explosive dynamic response of steel-reinforced concrete-filled steel tubular columns under fire conditions

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment Pub Date : 2025-08-21 DOI:10.1016/j.dibe.2025.100739

Chengquan Wang , Tengfang Dong , Xinquan Wang , Weiwei Zhang , Xiao Li , Hongguo Diao , Yukai Fang

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引用次数: 0

Abstract

This study advances the structural analysis of building performance under the multi-hazard scenario of fire followed by an explosion. Using validated numerical simulations, the dynamic response of steel-reinforced concrete-filled steel tubular (SRCFST) columns is assessed. A parametric analysis investigated the influence of fire duration, axial compression ratio, scaled distance, and explosion angle to enhance system safety and reliability. Results show prolonged fire severely degrades column stiffness. An axial compression ratio below 0.2 is beneficial, but ratios of 0.5 or higher lead to failure. Scaled distances of 0.22 m/kg^1/3 or less cause critical damage. Larger explosion angles (approaching 45°) improve blast resistance. These findings provide critical data for the design of safer, more resilient structures in the built environment, contributing to building sustainability and safety.

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火灾条件下钢管混凝土柱的爆炸动力响应

本研究提出了火灾后爆炸多重危害情景下建筑性能的结构分析。通过验证的数值模拟，对钢管混凝土柱的动力响应进行了评估。为了提高系统的安全性和可靠性，对火灾持续时间、轴压比、缩放距离和爆炸角度的影响进行了参数化分析。结果表明，长时间的火灾严重降低了柱的刚度。轴压比低于0.2是有益的，但高于0.5会导致破坏。0.22 m/kg1/3或更小的缩放距离会造成严重伤害。更大的爆炸角（接近45°）提高了抗爆炸能力。这些发现为在建筑环境中设计更安全、更有弹性的结构提供了关键数据，有助于建筑的可持续性和安全性。

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

Developments in the Built Environment Multiple-

CiteScore

7.40

自引率

1.20%

发文量

审稿时长

22 days

期刊介绍： Developments in the Built Environment (DIBE) is a recently established peer-reviewed gold open access journal, ensuring that all accepted articles are permanently and freely accessible. Focused on civil engineering and the built environment, DIBE publishes original papers and short communications. Encompassing topics such as construction materials and building sustainability, the journal adopts a holistic approach with the aim of benefiting the community.