Earthquakes and Structures

  • 제8권3호
  • /
  • Pages.555-572
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  • 2015
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Seismic behavior of steel reinforced concrete (SRC) T-shaped column-beam planar and 3D hybrid joints under cyclic loads

  • Chen, Zongping (College of Civil Engineering and Architecture, Guangxi University) ;
  • Xu, Jinjun (College of Civil Engineering and Architecture, Guangxi University) ;
  • Chen, Yuliang (College of Civil Engineering and Architecture, Guangxi University) ;
  • Xue, Jianyang (College of Civil Engineering and Architecture, Guangxi University)
  • 투고 : 2014.02.14
  • 심사 : 2014.06.21
  • 발행 : 2015.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents an experimental study of three two-dimensional (2D/planar) steel reinforced concrete (SRC) T-shaped column-RC beam hybrid joints and six 3D SRC T-shaped column-steel beam hybrid joints under low cyclic reversed loads. Considering different categories of steel configuration types in column cross section and horizontal loading angles for the specimens were selected, and a reliable structural testing system for the spatial loading was employed in the tests. The load-displacement curves, carrying capacity, energy dissipation capacity, ductility and deformation characteristics of the test subassemblies were analyzed. Especially, the seismic performance discrepancies between planar hybrid joints and 3D hybrid joints were intensively compared. The failure modes for planar loading and spatial loading observed in the tests showed that the shear-diagonal compressive failure was the dominating failure mode for all the specimens. In addition, the 3D hybrid joints illustrated plumper hysteretic loops for the columns configured with solid-web steel, but a little more pinched hysteretic loops for the columns configured with T-shaped steel or channel-shaped steel, better energy dissipation capacity & ductility, and larger interlayer deformation capacity than those of the planar hybrid joints. Furthermore, it was revealed that the hysteretic loops for the specimens under $45^{\circ}$ loading angle are generally plumper than those for the specimens under $30^{\circ}$ loading angle. Finally, the effects of steel configuration type and loading angle on the seismic damage for the specimens were analyzed by means of the Park-Ang model.

키워드

과제정보

연구 과제 주관 기관 : Natural Science Foundation of China

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