水下爆炸冲击波和气泡脉冲作用下RC板的损伤分析

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures Pub Date : 2025-04-18 DOI:10.1016/j.engstruct.2025.120331

Zhenjian Chen , Jun Li , Zhouhong Zong , Jiaqi Li , Minghong Li , Chengqing Wu

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引用次数: 0

摘要

研究了水下爆炸冲击波和气泡脉冲荷载作用下气背钢筋混凝土板的动力响应和损伤行为。对3种气背RC板进行了不同TNT装药下的水下爆炸试验，获得了试验数据和不同的损伤模式。实验结果表明，水下爆炸对钢筋混凝土板的损伤是由冲击波和气泡脉冲载荷共同决定的。当缩放距离为2.15 m/kg1/3时，激波和气泡脉冲对RC板的损伤较小。随着尺度距离的减小，激波作用下面板的塑性损伤增大，气泡脉冲产生明显的二次损伤。在LS-DYNA中建立了有限元数值模型，模拟了激波和气泡脉冲荷载作用下RC板的损伤行为。数值模拟结果与试验数据吻合较好。在验证的数值模型基础上，进一步讨论了水下爆炸对面板破坏的影响，考察了气背和水背条件对水下爆炸对面板损伤的影响。

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Damage analysis of RC panels subjected to shock wave and bubble pulse in underwater explosion

This study investigates the dynamic response and damage behavior of air-backed reinforced concrete (RC) panels subjected to shock waves and bubble pulse loads resulted from underwater explosion. Underwater explosion tests were conducted on three air-backed RC panels under various TNT charges to obtain the test data and different damage modes. The experimental results revealed that the damage in RC panels due to an underwater explosion was determined by both the shock wave and bubble pulse loads. When the scaled distance was 2.15 m/kg^1/3, the shock wave and bubble pulse caused minor damage in the RC panel. As the scaled distance decreased, the plastic damage to the panel under the shock wave increased, and the bubble pulse caused significant secondary damage. A finite element numerical model was also developed in LS-DYNA to simulate the damage behavior of RC panels caused by both shock wave and bubble pulse loads. The numerical model results demonstrated good agreement with the test data. With the validated numerical model, further discussion on the underwater explosion induced panel failure was made, and the effect of air-backed and water-backed conditions on the damage in the RC panels against UNDEX was examined.

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来源期刊

Engineering Structures 工程技术-工程：土木

CiteScore

10.20

自引率

14.50%

发文量

1385

审稿时长

67 days

期刊介绍： Engineering Structures provides a forum for a broad blend of scientific and technical papers to reflect the evolving needs of the structural engineering and structural mechanics communities. Particularly welcome are contributions dealing with applications of structural engineering and mechanics principles in all areas of technology. The journal aspires to a broad and integrated coverage of the effects of dynamic loadings and of the modelling techniques whereby the structural response to these loadings may be computed. The scope of Engineering Structures encompasses, but is not restricted to, the following areas: infrastructure engineering; earthquake engineering; structure-fluid-soil interaction; wind engineering; fire engineering; blast engineering; structural reliability/stability; life assessment/integrity; structural health monitoring; multi-hazard engineering; structural dynamics; optimization; expert systems; experimental modelling; performance-based design; multiscale analysis; value engineering. Topics of interest include: tall buildings; innovative structures; environmentally responsive structures; bridges; stadiums; commercial and public buildings; transmission towers; television and telecommunication masts; foldable structures; cooling towers; plates and shells; suspension structures; protective structures; smart structures; nuclear reactors; dams; pressure vessels; pipelines; tunnels. Engineering Structures also publishes review articles, short communications and discussions, book reviews, and a diary on international events related to any aspect of structural engineering.