Journal of the Society of Disaster Information (한국재난정보학회 논문집)

The Korean Society of Disaster Information (한국재난정보학회)
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Impact Characteristics of AFRP Reinforced Concrete Slab

AFRP 보강 콘크리트 슬래브의 충격 특성에 관한 연구

  • Park, Sung-Jin (Dept. of Urban Construction Eng., Incheon National University)
  • Received : 2018.11.08
  • Accepted : 2018.12.26
  • Published : 2018.12.31
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Abstract

Purpose: In this paper, based on this background, the main purpose of studying the behavior of concrete slab reinforced with new material fiber in impact loading is investigated by AFRP using aluminum fiber. Results: Research on the use of new materials as reinforcing materials for concrete members has been carried out in many fields such as flexural and shear tests under static loading, fatigue loading under cyclic loading, and application to PC beams. However, And the issue of plate elements is still at a basic stage. Conclusion: In this paper, the dynamic behavior of reinforced concrete slabs is investigated by using AFRP rod reinforced with aluminum fiber.

연구목적: 본 논문에서는 이와 같은 배경을 근거로 충격하중 재하시 신소재 섬유로 보강한 콘크리트 슬래브 거동을 연구하는 것을 주 목적으로 알루미늄 섬유를 이용한 AFRP로 보강한 콘크리트 슬래브 중앙의 강재를 자유낙하 시켰을 때 충격실험을 검토하고자 한다. 연구결과: 신소재를 콘크리트 부재의 보강재로 이용하는 연구는 정적 하중하에서 휨 및 전단에 관한 연구나 반복하중 하에서 피로하중에 관한 연구와 PC 보에서의 적용에 관한 연구 등이 많이 보고 되고 있다. 결론: 신소재를 콘크리트 부재의 보강근으로 이용하는 연구의 일환으로 본 논문에서는 알루미늄 섬유로 보강된 조립상 AFRP 로트를 이용한 콘크리트 슬래브를 설치하여 동적거동에 대해서 실험을 실시하였다.

Keywords

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Fig. 1. Placement of Reinforcement and Strain Gage

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Fig. 2 Acceleration Waveform(1m/sec)

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Fig. 3 Acceleration Waveform(4m/sec)

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Fig. 4 Each point the collision speed and the transition state of the maximum strain

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Fig. 5 Lower Muscle Strain Distribution

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Fig. 6 Crack Condition after Experiment

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Fig. 7 Maximum impact load – impact velocity relationship diagram

Table 1. List of Experimental Specifications

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Table 2. Material Properties of Reinforcing Bars

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Table 3. Concrete Mixing Ratio

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Table 4. Concrete Material Properties

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