Earthquakes and Structures

  • 제18권1호
  • /
  • Pages.15-25
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  • 2020
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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 behaviour of concrete columns with high-strength stirrups

  • Wang, Peng (State Key Laboratory of Green Building in Western China, Xi'an University of Architecture & Technology) ;
  • Shi, Qingxuan (State Key Laboratory of Green Building in Western China, Xi'an University of Architecture & Technology) ;
  • Wang, Feng (College of Civil Engineering, Xi'an University of Architecture & Technology) ;
  • Wang, Qiuwei (State Key Laboratory of Green Building in Western China, Xi'an University of Architecture & Technology)
  • 투고 : 2019.09.09
  • 심사 : 2019.11.15
  • 발행 : 2020.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

The seismic behaviour of reinforced concrete (RC) columns made from high-strength materials was investigated experimentally. Six high-strength concrete specimen columns (1:4 scale), which included three with high-strength stirrups (HSSs) and three with normal-strength stirrups (NSSs), were tested under a combination of high axial and reversed cyclic loads. The effects of stirrup strength and the ratio of transverse reinforcement on the cracking patterns, hysteretic response, strength, stiffness, ductility, energy dissipation and strain of transverse reinforcement were studied. The results indicate that good seismic behaviour of an RC column subjected to high axial compression can be obtained by using a well-shaped stirrup. Stirrup strength had little effect on the lateral bearing capacity. However, the ductility was significantly modified by improving the stirrup strength. When loaded with a large lateral displacement, the strength reduction of NSS specimens was more severe than that of those with HSSs, and increasing the stirrup strength had little effect on the stiffness reduction. The ductility and energy dissipation of specimens with HSSs were superior to those with NSSs. When the ultimate displacement was reached, the core concrete could be effectively restrained by HSSs.

키워드

과제정보

연구 과제 주관 기관 : National Natural Sciences Foundation of China

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피인용 문헌

  1. Seismic Design and Performance Assessment of Frame Buildings Reinforced by Dual-Phase Steel vol.11, pp.11, 2020, https://doi.org/10.3390/app11114998
  2. Effects of tie detailing configurations on reinforcement buckling and seismic performance of high-strength RC columns vol.147, 2020, https://doi.org/10.1016/j.soildyn.2021.106791