Steel and Composite Structures

  • 제41권4호
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  • Pages.567-580
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  • 2021
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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Experimental study and finite-element analysis of shear wall with CFST, column-form reinforcement, and diagonal bars

  • Su, Hao (School of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Zhu, Lihua (School of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Wang, Yaohong (School of Civil Engineering, Inner Mongolia University of Technology)
  • 투고 : 2020.08.27
  • 심사 : 2021.10.17
  • 발행 : 2021.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

A new type of composite shear wall with concrete-filled steel tubular frames, column-form reinforcement, and diagonal bars (CFST-CFR-DBSW) was proposed to develop high-efficiency lateral force resistance components for high-rise buildings. In order to study the seismic performance of the new shear wall, four specimens were designed: the new shear wall (CFST-CFR-DBSW), a shear wall with column-form reinforcement and diagonal bars (CFR-DBSW), an ordinary reinforced concrete shear wall (RCSW), and an ordinary reinforced concrete shear wall with concrete-filled steel tubular frames (CFST-RCSW). These specimens were constructed, and then tested under low-cycle loading. Using the experimental results, the anti-seismic behavior indexes of the four specimens were analyzed, including failure mode, bearing capacity, ductility, energy dissipation, stiffness degradation, and damage. A finite-element model of the new shear wall was established with ABAQUS to investigate the influence of the thickness of the steel tube, concrete strength, diameter of the column-reinforcement, and diameter of the diagonal bars on the seismic performance of the shear wall specimen. The research results showed that, compared with other specimens, CFST-CFR-DBSW was significantly strengthened with respect to bearing capacity, deformation, energy dissipation, stiffness, and damage. In addition, the results calculated by the ABAQUS finite-element model was in good agreement with the experimental results, and the influence rules of relevant parameters on the seismic performance of CFST-CFR-DBSW were obtained.

키워드

과제정보

The present work was financially supported by the project of the Shaanxi Province Key Research and Development Program on Industry Innovation Chain (2018ZDCXL-SF-03-03-01) and National Natural Science Foundation of China (51868059).

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