Prediction of dynamic shear and maximum displacement of clamped reinforced concrete beams subjected to impact loading

IF 5.1 2区 工程技术 Q1 ENGINEERING, MECHANICAL International Journal of Impact Engineering Pub Date : 2024-09-26 DOI:10.1016/j.ijimpeng.2024.105131
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Abstract

This paper presents a novel approach for predicting the dynamic shear forces and the maximum displacement of clamped reinforced concrete (RC) beams subjected to impact loading. By integrating wave propagation effects, membrane actions and the time-dependent acceleration distribution into the analysis, the study presents an improved approach based on single-degree-of-freedom (SDOF) analysis and overcomes the limitations of conventional SDOF method. The proposed model is validated against experimental data and finite-element simulations, demonstrating its reliability and accuracy in predicting dynamic response. Based on the validated model, a series of design charts are generated facilitating quick predictions of the maximum shear force at support and the maximum displacement of RC beams under impact, offering practical tools for engineers to enhance the safety and resilience of RC beams against impact loading.
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受冲击荷载作用的夹紧钢筋混凝土梁的动态剪力和最大位移预测
本文提出了一种新方法,用于预测承受冲击荷载的夹紧钢筋混凝土 (RC) 梁的动态剪力和最大位移。通过将波传播效应、膜作用和随时间变化的加速度分布整合到分析中,该研究提出了一种基于单自由度(SDOF)分析的改进方法,并克服了传统 SDOF 方法的局限性。实验数据和有限元模拟验证了所提出的模型,证明了其在预测动态响应方面的可靠性和准确性。在验证模型的基础上,生成了一系列设计图表,便于快速预测支撑处的最大剪力和 RC 梁在冲击下的最大位移,为工程师提供了实用的工具,以提高 RC 梁在冲击荷载下的安全性和弹性。
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来源期刊
International Journal of Impact Engineering
International Journal of Impact Engineering 工程技术-工程:机械
CiteScore
8.70
自引率
13.70%
发文量
241
审稿时长
52 days
期刊介绍: The International Journal of Impact Engineering, established in 1983 publishes original research findings related to the response of structures, components and materials subjected to impact, blast and high-rate loading. Areas relevant to the journal encompass the following general topics and those associated with them: -Behaviour and failure of structures and materials under impact and blast loading -Systems for protection and absorption of impact and blast loading -Terminal ballistics -Dynamic behaviour and failure of materials including plasticity and fracture -Stress waves -Structural crashworthiness -High-rate mechanical and forming processes -Impact, blast and high-rate loading/measurement techniques and their applications
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