• Title/Summary/Keyword: 합성 PC보

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Evaluation of Design Method and Shear Transfer Capacity on the Horizontal Interface of PC Composite Beams (PC 합성보의 수평접합면 전단력 전달성능 평가 및 설계법 분석)

  • Moon, Jeong-Ho;Oh, Young-Hun
    • Journal of the Korea Concrete Institute
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    • v.25 no.1
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    • pp.81-90
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    • 2013
  • The purpose of this study is to evaluate the horizontal shear strength on the interface between PC and cast-in-place concrete for PC composite beams. Six specimens were tested to examine the structural performance of the horizontal interface with different surface condition and stirrup detailing. Except for SF-291B specimen failed in flexural compression, strengths and deformation capacities of five specimens were determined by horizontal shear failure. Horizontal shear strengths by composite horizontal shear or shear friction in current codes could be used to predict the horizontal shear capacity of the interface for specimens. Also detailing for stirrup by PCI design provision could be used to accomplish the composite action in the interface.

Cyclic Loading Test for Beam-to-Column Connections of Concrete Encased CFT Column (콘크리트피복충전 각형강관 기둥-보 접합부의 주기하중 실험)

  • Park, Hong Gun;Lee, Ho Jun;Park, Sung Soon;Kim, Sung Bae
    • Journal of Korean Society of Steel Construction
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    • v.26 no.1
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    • pp.55-68
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    • 2014
  • In this study, the beam-to column connections of concrete-encased-and-filled steel tube columns were tested under cyclic loading. Two specimens using steel beams and two specimens using precast concrete beams were tested. The dimension of the column cross section was $670mm{\pm}670mm$. The beam depths were 488mm and 588mm for the steel beams and 700mm for the precast concrete beams. The longitudinal bar ratios of the precast concrete beams were 1.1% and 1.5%. For the connections to the steel beams, continuity plates were used in the tube columns. For the connections to the PC beams, couplers were used for beam re-bar connections. The test results showed that except for a specimen, deformation capacities of the specimens were greater than 4% rotation angle, which is the requirement for the Special Moment Frame. Particularly, specimens using precast concrete beam showed excellent performances in the strength, deformation, and energy dissipation.