POZD涂层方形钢筋混凝土板抗接触爆炸试验研究

汪维 杨建超 汪剑辉 高伟亮 王幸

汪维, 杨建超, 汪剑辉, 高伟亮, 王幸. POZD涂层方形钢筋混凝土板抗接触爆炸试验研究[J]. 爆炸与冲击, 2020, 40(12): 121402. doi: 10.11883/bzycj-2020-0180
引用本文: 汪维, 杨建超, 汪剑辉, 高伟亮, 王幸. POZD涂层方形钢筋混凝土板抗接触爆炸试验研究[J]. 爆炸与冲击, 2020, 40(12): 121402. doi: 10.11883/bzycj-2020-0180
WANG Wei, YANG Jianchao, WANG Jianhui, GAO Weiliang, WANG Xing. Experimental research on anti-contact explosion of POZD coated square reinforced concrete slab[J]. Explosion And Shock Waves, 2020, 40(12): 121402. doi: 10.11883/bzycj-2020-0180
Citation: WANG Wei, YANG Jianchao, WANG Jianhui, GAO Weiliang, WANG Xing. Experimental research on anti-contact explosion of POZD coated square reinforced concrete slab[J]. Explosion And Shock Waves, 2020, 40(12): 121402. doi: 10.11883/bzycj-2020-0180

POZD涂层方形钢筋混凝土板抗接触爆炸试验研究

doi: 10.11883/bzycj-2020-0180
基金项目: 国家自然科学基金(11302261,11972201)
详细信息
    作者简介:

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

    通讯作者:

    杨建超(1976- ),男,硕士,高级工程师,jiebao9630@163.com

  • 中图分类号: O383

Experimental research on anti-contact explosion of POZD coated square reinforced concrete slab

  • 摘要: 为研究聚异氰氨酸酯噁唑烷聚合物高分子材料(polyisocyanate oxazodone,POZD)涂层方形钢筋混凝土板在接触爆炸作用下的破坏模式和抗爆性能,对POZD涂层方形钢筋混凝土板进行接触爆炸条件下试验研究。试验中采用建筑结构中楼面设计常用的钢筋混凝土板为研究对象,通过11次独立的爆炸试验,分析了不同POZD涂层厚度对抗爆性能的影响,观测了钢筋混凝土板在不同装药量和不同POZD涂层厚度条件下的破坏模式和破坏特征,研究结果表明:涂层POZD钢筋混凝土板的主要破坏模式为钢筋混凝土板正面爆炸成坑,背面POZD涂层的圆锥状鼓起。POZD涂层鼓起主要是在爆炸冲击波作用下POZD涂层从基体板脱离并出现较大塑性变形所致。当冲击波荷载强度超过POZD材料的极限抗拉强度时,在涂层锥尖处形成较小的圆孔装剪切破坏,涂层的其他区域保持完好,从而让钢筋混凝土板不会产生较大范围的震塌破坏。在强冲击波荷载作用下利用POZD涂层仍然能够保持大变形、高塑性特性,可以通过自身的大变形很好地延长爆炸荷载的作用时间和耗散时间,吸收较大冲击波能量,从而约束混凝土震塌碎片,提高钢混混凝土板的抗爆性能。随着POZD涂层厚度增加,板的抗接触爆炸作用下的抗爆能力越强,临界震塌破坏装药量越多。研究结果可为工程应用及毁伤评估提供参考。
  • 图  1  聚脲及POZD材料的立体网状结构图

    Figure  1.  Stereoscopic network structure of polyuria and POZD materials

    图  2  混凝土板配筋及内衬材料示意图(单位:mm)

    Figure  2.  Schematic of reinforcement and lining of concrete slab (unit in mm)

    图  3  试验布置

    Figure  3.  Testing arrangement

    图  4  模型P0-1试验结果

    Figure  4.  Test results of model P0-1

    图  5  模型P1-1试验结果

    Figure  5.  Test results of model P1-1

    图  6  模型P2-1试验结果

    Figure  6.  Test results of model P2-1

    图  7  模型P3-1试验结果

    Figure  7.  Test results of model P3-1

    图  8  模型P5-1试验结果

    Figure  8.  Test results of model P5-1

    图  9  模型P4-1背爆面

    Figure  9.  Rear side of model P4-1

    图  10  模型P2-2背爆面

    Figure  10.  Rear side of model P2-2

    图  11  模型P5-2试验结果

    Figure  11.  Test results of model P5-2

    图  12  POZD涂层变形大小与装药量之间的关系

    Figure  12.  Relationship between deformation and thickness of POZD coating

    图  13  POZD涂层厚度与临界破坏的TNT药量关系

    Figure  13.  Relationship between coating thickness and TNT charge weight inducing critical failure of coating

    表  1  试验参数及结果

    Table  1.   Test parameters and results

    编号模型TNT药量W/g爆心高度h0/
    mm
    涂层厚度h1/
    mm
    开坑直径d1/
    mm
    POZD 涂层破坏状态
    鼓包直径d/mm鼓包高度h/mm
    1P0-1 40012.5 0295震塌
    2P1-1 60020.8 4400 750 70无破损
    3P1-2100032.5 4415 850 90无破损
    4P2-1180057 6475 990120无破损
    5P2-2200062.5 65001000125破损
    6P3-1200062.5 84501000115无破损
    7P3-2220069.3 85151050125无破损
    8P4-1240050105301060125无破损
    9P4-2260050105401100135破损
    10P5-1300050126601150150无破损
    11P5-2360050126801300180破损
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  • 收稿日期:  2020-06-03
  • 修回日期:  2020-07-10
  • 刊出日期:  2020-12-05

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