Structural Engineering and Mechanics

  • 제15권2호
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  • Pages.181-198
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  • 2003
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Nonlinear behavior of deep reinforced concrete coupling beams

  • Zhao, Z.Z. (Department of Civil Engineering, Tsinghua University) ;
  • Kwan, A.K.H. (Department of Civil Engineering, The University of Hong Kong)
  • 투고 : 2001.10.23
  • 심사 : 2002.11.08
  • 발행 : 2003.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

Six large scale models of conventionally reinforced concrete coupling beams with span/depth ratios ranging from 1.17 to 2.00 were tested under monotonically applied shear loads to study their nonlinear behavior using a newly developed test method that maintained equal rotations at the two ends of the coupling beam specimen and allowed for local deformations at the beam-wall joints. By conducting the tests under displacement control, the post-peak behavior and complete load-deflection curves of the coupling beams were obtained for investigation. It was found that after the appearance of flexural and shear cracks, a deep coupling beam would gradually transform itself from an ordinary beam to a truss composed of diagonal concrete struts and longitudinal and transverse steel reinforcement bars. Moreover, in a deep coupling beam, the local deformations at the beam-wall joints could contribute significantly (up to the order of 50%) to the total deflection of the coupling beam, especially at the post-peak stage. Finally, although a coupling beam failing in shear would have a relatively low ductility ratio of only 5 or even lower, a coupling beam failing in flexure could have a relatively high ductility ratio of 10 or higher.

키워드

참고문헌

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피인용 문헌

  1. Experimental study on seismic performance of coupling beams not designed for ductility vol.28, pp.3, 2008, https://doi.org/10.12989/sem.2008.28.3.317
  2. Seismic Behavior and Bearing Capacity Calculation of the Three-Layer-Closed-Restraining Stirrups Coupling Beam with Small Span-to-Depth vol.243-249, pp.1662-8985, 2011, https://doi.org/10.4028/www.scientific.net/AMR.243-249.3755
  3. Deformation Capacity and Performance-Based Seismic Design for Reinforced Concrete Coupling Beams vol.13, pp.1, 2003, https://doi.org/10.3130/jaabe.13.203
  4. Cyclic behavior and analysis of steel plate reinforced concrete coupling beams with a span-to-depth ratio of 2.5 vol.148, pp.None, 2021, https://doi.org/10.1016/j.soildyn.2021.106817