...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine Structures >Experimental and numerical study of damage characteristics of RC slabs subjected to air and underwater contact explosions
【24h】

Experimental and numerical study of damage characteristics of RC slabs subjected to air and underwater contact explosions

机译：空气和水下接触爆炸RC板坯损伤特性的实验和数值研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Reinforced concrete (RC) is one of the most commonly used construction materials. However, impact and blast loads could completely destroy RC structures, causing tremendous casualties and property losses. Therefore, analyzing the damage mechanism and dynamic behaviour of RC structures under blast loading is significant. This paper presents a study on the behaviour of RC slabs subjected to air and underwater contact detonation. Two RC slabs were tested under real blast loads. One was tested under air contact explosion of 210 g TNT, the other was tested subjected to underwater contact explosion of 6 g TNT. Damage evolution and damage mechanism of the RC slabs subjected to the air and underwater contact explosions are investigated by using high-fidelity numerical models. The damage patterns obtained from the numerical models match well with those of the tests. The effect of experimental environments on the structural behaviour of the slabs subjected to the underwater explosions is also discussed. The different response of the RC slabs subjected air and underwater explosions with identical charge mass are analyzed contrastively by employing the validated coupled method. The results show that the present model can give a reliable prediction of damage characteristics for RC structures under various blast scenarios. The experimental environments have important influence on the structural response and bubble development. The damage of the RC slabs induced by underwater contact explosion is significantly larger than that caused by air contact blast with equal charge mass.
机译：钢筋混凝土（RC）是最常用的建筑材料之一。然而，影响和爆炸载荷可以完全破坏RC结构，导致巨大的伤亡和财产损失。因此，分析了冲压下RC结构的损伤机理和动态行为是显着的。本文介绍了对空气和水下接触爆轰的RC板的行为的研究。在真正的爆炸载荷下测试了两个RC板。在空气接触爆炸下进行测试，在210g TNT的情况下，另一个经过6g TNT的水下接触爆炸测试。采用高保真数值模型研究了经受空气和水下接触爆炸的RC板的损伤演化和损伤机制。从数值模型获得的损坏模式与测试的损坏模式相匹配。还讨论了实验环境对受水下爆炸的结构的结构行为。通过采用经过验证的耦合方法，对具有相同电荷质量的RC板受体的空气和水下爆炸的不同响应。结果表明，本模型可以在各种爆炸场景下提供对RC结构的损坏特性的可靠预测。实验环境对结构应答和泡沫发展具有重要影响。水下接触爆炸诱导的RC板的损坏显着大于具有相同电荷质量的空气接触爆炸引起的损伤。

著录项

  • 来源
    《Marine Structures》 |2019年第7期|242-257|共16页
  • 作者

    Yang Guangdong; Wang Gaohui; Lu Wenbo; Wu Liang; Yan Peng; Chen Ming;

  • 作者单位

    Wuhan Univ State Key Lab Water Resources & Hydropower Engn S Wuhan 430072 Hubei Peoples R China|Wuhan Univ Key Lab Rock Mech Hydraul Struct Engn Minist Educ Wuhan 430072 Hubei Peoples R China;

    Wuhan Univ State Key Lab Water Resources & Hydropower Engn S Wuhan 430072 Hubei Peoples R China|Wuhan Univ Key Lab Rock Mech Hydraul Struct Engn Minist Educ Wuhan 430072 Hubei Peoples R China;

    Wuhan Univ State Key Lab Water Resources & Hydropower Engn S Wuhan 430072 Hubei Peoples R China|Wuhan Univ Key Lab Rock Mech Hydraul Struct Engn Minist Educ Wuhan 430072 Hubei Peoples R China;

    Wuhan Univ Sci & Technol Coll Sci Dept Engn Mech Wuhan 430065 Hubei Peoples R China;

    Wuhan Univ State Key Lab Water Resources & Hydropower Engn S Wuhan 430072 Hubei Peoples R China|Wuhan Univ Key Lab Rock Mech Hydraul Struct Engn Minist Educ Wuhan 430072 Hubei Peoples R China;

    Wuhan Univ State Key Lab Water Resources & Hydropower Engn S Wuhan 430072 Hubei Peoples R China|Wuhan Univ Key Lab Rock Mech Hydraul Struct Engn Minist Educ Wuhan 430072 Hubei Peoples R China;

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

    Reinforced concrete slab; Air contact explosion; Underwater contact explosion; Experimental environment; Structural response;

    机译：钢筋混凝土板;空气接触爆炸;水下接触爆炸;实验环境;结构反应;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号