Steel and Composite Structures

  • 제28권1호
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  • Pages.63-71
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  • 2018
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Seismic behavior of steel tube reinforced concrete bridge columns

  • Tian, Tian (School of Civil Engineering, Dalian University of Technology) ;
  • Qiu, Wen-liang (School of Civil Engineering, Dalian University of Technology) ;
  • Zhang, Zhe (School of Civil Engineering, Dalian University of Technology)
  • 투고 : 2017.08.31
  • 심사 : 2018.04.17
  • 발행 : 2018.07.10
⟨ 이전 논문 다음 논문 ⟩

초록

This paper reports an experimental study that was accomplished to assess the seismic behavior of steel tube reinforced concrete bridge columns (SBCs). The motivation of this study was to verify a supposition that the core steel tube may be terminated at a rational position in the column to minimize the material cost while maintaining the seismic behavior of this composite column. Four SBC specimens were tested under combined constant axial load and cyclic reversed lateral loads. The unique variable in the test matrix was the core steel tube embedment length, which ranged from 1/3 to 3/3 of the column effective height. It is observed that SBCs showed two distinctly different failure patterns, namely brittle shear failure and ductile flexural failure. Tests results indicate that the hysteretic responses of SBCs were susceptible to the core steel tube embedment length. With the increase of this structural parameter, the lateral strength of SBC was progressively improved; the deformability and ductility, however, exhibited a tendency of first increase and then decrease. It is also found that in addition to maintained the rate of stiffness degradation and cumulative energy dissipation basically unchanged, both the ductility and deformability of SBC were significantly improved when the core steel tube was terminated at the mid-height of the column, and these were the most unexpected benefits accompanied with material cost reduction.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

참고문헌

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