• Title/Summary/Keyword: 콘크리트 건물

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High Storied Apartment Structure Design and Improvement Direction (다층 아파트 구조설계와 개선책)

  • Lee, Chang-Nam
    • Korean Architects
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    • no.10 s.270
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    • pp.60-65
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    • 1991
  • 최근 ACI Joumal에는 12,000 psi(약 840Kg/㎠)의 콘크리트를 현장에서 비벼 넣어 지은 건물이 소개되었다. 그러니까 우리나라에서 고작 210㎏/㎠ 콘크리트로 아파트를 짓는 것은 후진국의 틀에서 벗어나지 못한 증거라면서 고강도 콘크리트의 도입을 부추기게 되었는데 문제는 그 자체가 나쁘게 아니라 이를 기회로 품질관리도 제대로 못하는 주제에 외형만 본받는 아파트 설계를 하게 된 데에 있다는 것이다.

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Seismic Performance Index of Reinforced Concrete Shear Wall Buildings (철근콘크리트 전단벽식 건물의 내진성능지수)

  • 권영웅`;김민수
    • Proceedings of the Korea Concrete Institute Conference
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    • 2003.11a
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    • pp.148-151
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    • 2003
  • This paper concerns the seismic performance index of highrise reinforced concrete shear wall buildings assessed by FEMA 273 and ATC-40 provisions. The applied buildings are 10 to 35 stories and the evaluation level is life safety level. The seismic performance index results of $1^{st}$ and $2^{nd}$ evaluations are as follows; (equation omitted)

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폐타이어 콘크리트의 열적 특성

  • 최재남;이희남;손기상
    • Proceedings of the Korean Institute of Industrial Safety Conference
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    • 2001.11a
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    • pp.197-202
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    • 2001
  • 기존 콘크리트의 특성을 이용한 수많은 건물들이 축조되고 있으면, 우리는 그 안에서 거주하고 있다. 다양한 기후조건, 초근에는 오염된 장기적으로 부식시키는 그리고 파괴시키는 자연조건이 되고 있다 많은 요인들 중에서 습기가 스며들고, 이는 중요구조 요소인 철근을 부식케하여 큰 문제로 대두되어 최근 국제적 연구는 이러한 악조건을 지탱하는 콘크리트 구조를 개선하기 위한 노력을 하고있는 추세이다.(중략)

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Behaviour of the Reinforced Concrete Columns with Shear Reinforcement (전단보강량에 따른 철근콘크리트 기둥의 거동)

  • Nam, Sang-Uk;Song, Han-Beom;Tae, Kyung-Hoon;Yi, Waon-Ho;Oh, Sang-Hoon;Yang, Won-Jik
    • Proceedings of the Korea Concrete Institute Conference
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    • 2008.11a
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    • pp.45-48
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    • 2008
  • Under earthquake loads, the columns on the lower stories carry large axial forces and horizontal forces as the earthquake loads are acting horizontally and vertically on the building. To distribute the energy entered into the building under earthquakes according to the plastic deformation of the members, it is safer and more economic to persuade plastic hinge to occur in the beams rather than on the columns. However, it is unavoidable to have plastic hinge occurring on the columns when it is applied on both of the main axes of the building, which results in high shear force on the column end, and reinforced concrete column may result in sudden brittle failure due to bending moment and shear force. To increase restriction of the reinforced concrete column on the horizontal forces, this study uses repetitive loading experiments with different amount of shear reinforcement, and analyzes and compares the structural safety and behaviour of the reinforced test materials.

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Seismic Performance Evaluation of Seismic Strengthening Method using SRCF External Connection of Medium and Low-rise R/C Buildings (중·저층 철근콘크리트 건물의 SRCF 외부접합 내진보강공법의 내진성능 평가)

  • Lee, Kang-Seok;Jung, Jue-Seong;Lee, Jong-Kweon
    • Journal of the Korea Concrete Institute
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    • v.27 no.2
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    • pp.147-155
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    • 2015
  • A new SRCF (Steel Reinforced Concrete Frame) external connection method for seismic strengthening of medium-and low-rise reinforced concrete buildings is reported in this paper. The SRCF method, proposed in this study, is capable of carrying out the seismic retrofitting construction while residents can live inside building. The method is one of the strength design approach by retrofit which can easily increase the ultimate lateral load capacity of concrete buildings controlled by shear. The pseudo-dynamic test, designed using a existing school building in Korea, was carried out in order to verify the seismic strengthening effects of the proposed method in terms of the maximum load carrying capacity and deformation. Test results revealed that the proposed SRCF strengthening method installed in RC frame enhanced conspicuously the strength and deformation capacities, and the method can resist markedly under the large scaled earthquake intensity level.