• Title/Summary/Keyword: 횡방향 철근

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Evaluation of the Effective Width and Flexural Strength of the T-Stalled Walls (T형 벽체의 유효 폭 및 휨강도 평가)

  • 양지수;이리형
    • Journal of the Korea Concrete Institute
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    • v.14 no.5
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    • pp.796-803
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    • 2002
  • T-shaped walls have different strength, stiffness and ductility in the two opposite directions parallel to the web when subjected to horizontal in-plane loads. When the flange is in tension, the extent that the flange reinforcement contributes to the flexural strength will be subjected to shear-lag effect. Because of this shear-lag effect, the flange may not participate fully in the action with the web, and the effective flange width is needed for predicting the actual strength and stiffness of structures. The objective of this paper is to evaluate the effective flange width and actual strength of the T-shaped wall with Korean code specified detailing of the wall web. Three specimens were tested with cyclic lateral loading applied at top of the wall. A constant axial load of approximately 0.1f$\_$ck/$.$A$\_$g/ is maintained during the testing. Test results show that the effective flange width increases with increasing drift level, such that the entire overhanging flange of h/3 is effective at the maximum strength level. Therefore, the use of PCI or KBC(Korean Building Code) value of h/10 is unconservative with respect to detailing at the wall web boundary.

Seismic Performance of Low-rise Piloti RC Buildings with Eccentric Core (편심코어를 가지는 저층 철근콘크리트 필로티 건물의 내진성능)

  • Kim, Sung-Yong;Kim, Kyung-Nam;Yoon, Tae-Ho
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.10
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    • pp.490-498
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    • 2020
  • In this study, the seismic performance of low-rise piloti buildings with eccentric core (shear wall) positions was analyzed and reviewed. A prototype was selected among constructed low-rise piloti buildings with eccentric cores designed based on KBC2005. The seismic performance of the building showed plastic behavior in the X-direction and elastic behavior in the Y-direction. The inter-story drift is larger than that of a concentric core case and has the maximum allowed drift ratio. The displacement ratio of the first story is much larger than that of upper stories, and the frame structure in the first story is vulnerable to lateral force. Therefore, low-rise piloti buildings with eccentric cores need to have less lateral displacement, as well as reinforcement of the lateral resistance capacity in seismic design and seismic retrofit.