콘크리트학회논문집 (Journal of the Korea Concrete Institute)

  • 제27권6호
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  • Pages.591-602
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  • 2015
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  • 1229-5515(pISSN)
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  • 2234-2842(eISSN)
한국콘크리트학회 (Korea Concrete Institute)
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주기하중 하에서 철근 콘크리트 전단벽체와 철골 연결보 접합부의 내진성능

Seismic Performance of Steel Coupling Beam and RC Shear Wall under Lateral Cyclic Load

  • Lim, Woo-Young (Dept. of Architecture and Architectural Engineering, Seoul National University) ;
  • Hong, Sung-Gul (Dept. of Architecture and Architectural Engineering, Seoul National University)
  • 투고 : 2014.10.30
  • 심사 : 2015.08.17
  • 발행 : 2015.12.30
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초록

이 논문에서는 철골 연결보와 철근 콘크리트 전단벽체의 내진성능을 평가하고자 주기하중 실험을 수행하였다. 실험의 주요 변수는 벽체의 보강 상세이었다. 현행 설계 기준을 따라 설계된 병렬 전단벽체는 콘크리트의 지압강도로 인해 조기 파괴되었다. 한편, 매립길이 내에 추가적인 수직 및 수평 보강재로 보강된 벽체의 경우, 지압파괴가 방지되는 것으로 나타났다. 실험결과, 벽체의 수직철근은 수평철근보다 병렬 전단벽의 전단 강도에 더 영향을 끼치는 것으로 나타났다. 매립 철골 보 플랜지 상 하부에서 발생하는 콘크리트의 응력분포를 가정하여, PC 병렬 전단벽체 내의 소요 철근의 양이 결정되었으며, 이를 이용하여 예측 강도 식을 제안하였다. 예측된 강도식은 실험값과 비교적 잘 일치하였다.

In this paper, cyclic loading test was performed to evaluate the seismic performance of the steel coupling beam and RC shear wall. The test parameter was reinforcement detail of the shear wall. For the shear wall which was designed in accordance with the current design codes, a premature bearing failure occurred at the face of the wall. On the other hand, the bearing failure of walls was prevented due to the new type of reinforcement details. Test results indicated that the vertical reinforcements were more affected to the shear strength of the coupled shear wall than the horizontal reinforcement. Based on the failure mode, concrete stress distribution above and below flanges of the embedded steel beam was proposed. Assuming proposed concrete stress distribution, load resistance was predicted and it was agree well with test data.

키워드

참고문헌

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