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Impact resistant behaviour of RC slab strengthened with FRP sheet

机译：FRP片增强RC板的抗冲击性能

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摘要

To investigate the impact resistance of RC slabs strengthened with Fibre Reinforced Plastic (FRP) sheet to the back of the slab, falling-weight impact tests were conducted. Two loading types were applied: iterative loading and single loading. The impact load was applied to the centre of the RC slab with a free falling 300 kg steel striker with a diameter of 60 mm. A total of 12 RC slabs that were 1,650 (L) × 1,650 (W) × 150 (h) mm were used for these experiments. In this study, the strengthening method and material properties of the FRP sheet and the number of FRP sheet layers were varied. The results obtained from this study are as follows: (1) the impact resistance of the RC slabs can be improved by attaching a strengthened FRP sheet to the back surfaces; (2) the load bearing mechanism of RC slabs depends on the loading type and strengthening volume of the FRP sheet; and (3) the dynamic amplification factor is about two, which is independent of the load bearing mechanism of the RC slab and the strengthening volume and tensile rigidity of the FRP sheet.
机译：为了研究用纤维增强塑料（FRP）片增强的RC板对板背面的抗冲击性，进行了落锤冲击试验。应用了两种加载类型：迭代加载和单次加载。用自由下落的300 kg直径60 mm的钢撞针将冲击载荷施加到RC板的中心。这些实验总共使用了12个RC平板，分别为1,650（L）×1,650（W）×150（h）mm。在这项研究中，FRP板的加固方法和材料性能以及FRP板的层数是变化的。这项研究得到的结果如下：（1）通过将增强的FRP片粘贴到背面可以提高RC板的抗冲击性； （2）RC平板的承载机理取决于FRP板的承载类型和加固量。 （3）动态放大系数约为2，它与RC楼板的承载机理以及FRP板的增强量和抗拉刚度无关。

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  • 来源
    《Materials and structures》 |2011年第10期|p.1855-1864|共10页
  • 作者

    Abdul Qadir Bhatti; Norimitsu Kishi; Kiang Hwee Tan;

  • 作者单位

    Department of Earthquake Engineering, School of Civil and Environmental Engineering, National University of Sciences & Technology, NUST, Islamabad, Pakistan;

    Civil Engineering, Muroran Institute of Technology, Muroran 050-8585, Japan;

    Department of Civil Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576, Singapore;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    FRP sheet; rc slab; impact resistant behaviour; lower cover concrete spalling;

    机译：玻璃钢片材;rc平板耐冲击性能;下盖混凝土剥落;

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