Analysis model for damage of reinforced bars in RC beams under contact explosion

IF 5 Q1 ENGINEERING, MULTIDISCIPLINARY

Defence Technology(防务技术) Pub Date : 2024-11-01 DOI:10.1016/j.dt.2024.03.003

Chaozhi Yang , Zhengxiang Huang , Xin Jia , Wei Shang , Jian Zhang

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引用次数: 0

Abstract

The load-bearing capacity of reinforced concrete (RC) beams primarily relies on internal reinforced bars. However, limited research has been conducted on the dynamic response of these bars. To address this gap, this study has established an analytical model using dimensional analysis for calculating the deformation of reinforced bars within RC beams subjected to contact explosion. Comparison with experimental data reveals that the model has a relative error of 5.22%, effectively reflecting the deformation of reinforced bars. Additionally, based on this model, the study found that while concrete does influence the deformation of reinforced bars, this influence can be disregarded in comparison to the material properties of the bars themselves. The findings of this study have implications for calculating the residual load-bearing capacity of damaged RC beams, evaluating the extent of damage to RC beams after blast loading, and providing guidance for the blast-resistant design of RC structures.

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接触爆炸下钢筋混凝土梁中钢筋损坏的分析模型

钢筋混凝土（RC）梁的承载能力主要依靠内部钢筋。然而，有关这些钢筋动态响应的研究却十分有限。针对这一空白，本研究利用尺寸分析建立了一个分析模型，用于计算钢筋混凝土梁内部钢筋在接触爆炸情况下的变形。与实验数据对比发现，该模型的相对误差为 5.22%，能有效反映钢筋的变形情况。此外，根据该模型，研究发现虽然混凝土确实会影响钢筋的变形，但与钢筋本身的材料特性相比，这种影响可以忽略不计。本研究的结果对计算受损钢筋混凝土梁的剩余承载力、评估钢筋混凝土梁在爆炸荷载后的受损程度以及指导钢筋混凝土结构的抗爆设计具有重要意义。

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

Defence Technology(防务技术) Mechanical Engineering, Control and Systems Engineering, Industrial and Manufacturing Engineering

CiteScore

8.70

自引率

0.00%

发文量

728

审稿时长

25 days

期刊介绍： Defence Technology, a peer reviewed journal, is published monthly and aims to become the best international academic exchange platform for the research related to defence technology. It publishes original research papers having direct bearing on defence, with a balanced coverage on analytical, experimental, numerical simulation and applied investigations. It covers various disciplines of science, technology and engineering.