接触爆炸下聚脲/钢筋混凝土厚板复合结构的抗爆性能

徐赵威 汪维 李奕硕 张仲昊 张丛琨

徐赵威, 汪维, 李奕硕, 张仲昊, 张丛琨. 接触爆炸下聚脲/钢筋混凝土厚板复合结构的抗爆性能[J]. 爆炸与冲击. doi: 10.11883/bzycj-2024-0083
引用本文: 徐赵威, 汪维, 李奕硕, 张仲昊, 张丛琨. 接触爆炸下聚脲/钢筋混凝土厚板复合结构的抗爆性能[J]. 爆炸与冲击. doi: 10.11883/bzycj-2024-0083
XU Zhaowei, WANG Wei, LI Yishuo, ZHANG Zhonghao, ZHANG Congkun. Blast resistance of polyurea/reinforced concrete thick slab composite structures under contact explosion[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0083
Citation: XU Zhaowei, WANG Wei, LI Yishuo, ZHANG Zhonghao, ZHANG Congkun. Blast resistance of polyurea/reinforced concrete thick slab composite structures under contact explosion[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0083

接触爆炸下聚脲/钢筋混凝土厚板复合结构的抗爆性能

doi: 10.11883/bzycj-2024-0083
基金项目: 国家自然科学基金(11302261,11972201)
详细信息
    作者简介:

    徐赵威(1999- ),男,硕士研究生,2211090196@nbu.edu.cn

    通讯作者:

    汪 维(1983- ),男,博士,教授,wangwei7@nbu.edu.cn

  • 中图分类号: O383

Blast resistance of polyurea/reinforced concrete thick slab composite structures under contact explosion

  • 摘要: 为了研究聚脲/钢筋混凝土厚板复合结构的抗爆性能,对聚脲/钢筋混凝土厚板复合结构开展不同装药量下的接触爆炸实验,并对整体及局部的破坏特征进行分析。利用LS-DYNA有限元仿真软件研究聚脲/钢筋混凝土厚板复合结构的损伤过程及机理,并进一步分析了聚脲/钢筋混凝土厚板复合结构的破坏模式及特征。实验及有限元结果表明:接触爆炸荷载作用下的聚脲/钢筋混凝土厚板复合结构呈现6种破坏模式(正面成坑;层裂破坏;层裂鼓包;震塌破坏,聚脲涂层鼓包大变形;爆炸贯穿,聚脲涂层严重鼓包变形;贯穿和撕裂破坏);在钢筋混凝土厚板背面涂覆聚脲有效增强了复合结构的抗爆性能。研究成果可为实际应用下的聚脲/钢筋混凝土厚板复合结构抗爆设计防护提供参考依据。
  • 图  1  聚脲/钢筋混凝土厚板复合结构示意图

    Figure  1.  Schematic diagram of a polyurea/reinforced concrete thick plate composite structure

    图  2  试件配筋方式

    Figure  2.  Specimen reinforcement pattern

    图  3  接触爆炸实验装置

    Figure  3.  The contact explosion test device

    图  4  有限元模型

    Figure  4.  Finite element model

    图  5  3 kg炸药接触爆炸下RCP1实验与数值结果对比

    Figure  5.  Comparison of experimental and numerical results for RCP1 under 3-kg-explosive contact explosion

    图  6  5 kg炸药接触爆炸下RCP2实验结果与数值结果的对比

    Figure  6.  Comparison of experimental and numerical results for RCP2 under 5-kg-explosvie contact explosion

    图  7  RCP1试件迎爆面(上)及背爆面(下)损伤过程

    Figure  7.  Damage process of RCP1 specimen on the face (top) and back (bottom) of the blast surface

    图  8  接触爆炸荷载下的压力场分布

    Figure  8.  Distribution of pressure field under contact blast loading

    图  9  聚脲涂覆RC板应力波传播

    Figure  9.  Stress wave propagation in polyurea-coated RC slabs

    图  10  聚脲层内加载与卸载波相互作用过程

    Figure  10.  Interaction of loading and unloading waves within a polyurea layer

    图  11  不同药量下聚脲/钢筋混凝土厚板复合结构的破坏模式

    Figure  11.  Damage modes of polyurea/reinforced concrete thick slab composite structures under different dosages

    图  12  聚脲/钢筋混凝土厚板复合结构的破坏模式

    Figure  12.  Damage modes of polyurea/reinforced concrete thick slab composite structures

    表  1  实验工况

    Table  1.   Test conditions

    工况模型TNT药量/kg聚脲涂层
    厚度/mm
    涂覆
    位置
    破坏形态
    1RCP1310背面未贯穿,背面最大
    鼓起高度90 mm
    2RCP2510背面未贯穿,背面最大
    鼓起高度172 mm
    下载: 导出CSV

    表  2  实验与数值计算结果对比

    Table  2.   Comparison of experimental and numerical calculation results

    模型 实验 模拟 模拟结果与实验结果的相对误差/%
    D/mm H/mm d/mm h/mm D/mm H/mm d/mm h/mm D H d h
    RCP1 738 170 1250 90 700 160 1200 84 5.15 5.88 4.00 6.67
    RCP2 760 210 1270 172 720 190 1250 164 5.26 9.52 1.57 4.65
    下载: 导出CSV

    表  3  数值结果

    Table  3.   Numerical results

    工况编号 装药量/kg 聚脲厚度/mm 比例厚度/(m∙kg−1/3) 破坏模式
    RCP-1 0.5 10 0.378 正面成坑
    RCP-2 1.0 10 0.300 正面成坑
    RCP-3 1.5 10 0.262 层裂破坏
    RCP-4 2.0 10 0.238 层裂鼓包
    RCP-5 2.5 10 0.221 层裂鼓包
    RCP-6 3.0 10 0.208 层裂鼓包
    RCP-7 3.5 10 0.198 层裂鼓包
    RCP-8 4.0 10 0.189 层裂鼓包
    RCP-9 4.5 10 0.182 层裂鼓包
    RCP-10 5.0 10 0.175 层裂鼓包
    RCP-11 5.5 10 0.170 层裂鼓包
    RCP-12 6.0 10 0.165 层裂鼓包
    RCP-13 6.5 10 0.161 层裂鼓包
    RCP-14 7.0 10 0.157 层裂鼓包
    RCP-15 7.5 10 0.153 层裂鼓包
    RCP-16 8.0 10 0.150 层裂鼓包
    RCP-17 8.5 10 0.147 震塌破坏
    RCP-18 9.0 10 0.144 震塌破坏
    RCP-19 9.5 10 0.142 震塌破坏
    RCP-20 10.0 10 0.139 震塌破坏
    RCP-21 10.5 10 0.137 震塌破坏
    RCP-22 11.0 10 0.135 爆炸贯穿
    RCP-23 11.5 10 0.133 爆炸贯穿
    RCP-24 12.0 10 0.131 贯穿和撕裂
    下载: 导出CSV
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  • 收稿日期:  2024-03-28
  • 修回日期:  2024-06-05
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