대한건축학회논문집:구조계 (Journal of the Architectural Institute of Korea Structure & Construction)

  • 제28권5호
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  • Pages.21-28
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  • 2012
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  • 1226-9107(pISSN)
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  • 2384-1788(eISSN)
대한건축학회 (Architectural Institute of Korea)
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초고강도 섬유보강 콘크리트 부재의 휨강도 산정

Evaluation of Flexural Capacity of Ultra-High Strength Fiber Reinforced Concrete Members

  • 투고 : 2012.02.02
  • 발행 : 2012.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, experiments on ultra-high-strength steel fiber reinforced concrete beams with 2% volume fraction of steel fiber had been conducted. Test was conducted by two point loading with 2,000kN actuator for slender beam specimen. Shear-span to depth ratio was 6 intending the flexural failure. For the flexural design of ultra-high strength fiber reinforced concrete member an empirical equation had been proposed. Improving accuracy of empirical equation, 9 possible stress distributions for concrete section was compared with test results. For the reliability of empirical equation, these models were compared with experiment results conducted with previous researches. As a results of comparative study, the most exact solution was the model that use the real stress distribution of ultra-high strength fiber reinforced concrete. However, more safer prediction was possible using stress block parameters that was proposed by the study results of ultra-high strength concrete and tensile stress distribution that was considered the debonding properties of fiber.

키워드

과제정보

연구 과제 주관 기관 : 한국과학재단

참고문헌

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