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Damage features of RC slabs subjected to air and underwater contact explosions

机译：钢筋混凝土楼板遭受空气和水下接触爆炸的损坏特征

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摘要

Reinforced concrete (RC) slabs are the major components for building structures and underwater engineering plants. However, blast loading, especially from contact explosion, can cause significant damage to the target structures both in air and water. The objective of this paper is to compare the damage characteristics of RC slabs subjected to air and underwater contact explosions. Three methods, i.e. fully coupled Eulerian-Lagrangian (CEL) method, smoothed particle hydrodynamics (SPH) method, and coupled finite element method and smoothed particle hydrodynamics method (FEM-SPH), are first employed to simulate the damage features of an RC slab to air contact explosion. Damage profiles of the RC slab to air contact explosion using the three methods are compared with the experiment results in the literature, and the applicability and suitability of these methods are discussed. Subsequently, the most effective method (i.e., FEM-SPH) is used to describe the dynamic response of the RC slab subjected to underwater contact explosion. Shock wave propagation characteristics from air and underwater contact explosions are discussed. Damage features of the RC slab to air and underwater contact explosions are compared. Damage characteristics and plastic deformation of reinforcement steel bars are also investigated.
机译：钢筋混凝土（RC）板是建筑结构和水下工程设备的主要组件。但是，爆炸载荷，特别是来自接触爆炸的爆炸载荷，会对空气和水中的目标结构造成重大破坏。本文的目的是比较遭受空气和水下接触爆炸的钢筋混凝土板的破坏特性。首先采用三种方法，即完全耦合欧拉-拉格朗日（CEL）方法，平滑粒子流体动力学（SPH）方法，耦合有限元方法和平滑粒子流体动力学方法（FEM-SPH），来模拟RC板的损伤特征与空气接触爆炸。将三种方法对钢筋混凝土楼板对空气接触爆炸的破坏特征与文献中的实验结果进行了比较，并讨论了这些方法的适用性和适用性。随后，最有效的方法（即FEM-SPH）用于描述遭受水下接触爆炸的RC板的动力响应。讨论了来自空气和水下接触爆炸的冲击波传播特性。比较了RC平板对空气和水下接触爆炸的破坏特征。还研究了钢筋的损伤特性和塑性变形。

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  • 来源
    《Ocean Engineering》 |2018年第1期|531-545|共15页
  • 作者

    Zhao Xiaohua; Wang Gaohui; Lu Wenbo; Yan Peng; Chen Ming; Zhou Chuangbing;

  • 作者单位

    Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China;

    Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China;

    Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China;

    Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China;

    Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China;

    Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Damage features; Reinforced concrete slab; Air contact explosion; Underwater contact explosion; FEM-SPH;

    机译：破坏特征;钢筋混凝土板;空气接触爆炸;水下接触爆炸;FEM-SPH;

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