Earthquakes and Structures

  • 제9권4호
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  • Pages.699-718
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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

Effect of reinforcement strength on seismic behavior of concrete moment frames

  • Fu, Jianping (Lab for construction of mountainous city and new technology of Ministry of education of China, School of Civil Engineering) ;
  • Wu, Yuntian (Lab for construction of mountainous city and new technology of Ministry of education of China, School of Civil Engineering) ;
  • Yang, Yeong-bin (Lab for construction of mountainous city and new technology of Ministry of education of China, School of Civil Engineering)
  • 투고 : 2014.12.17
  • 심사 : 2015.07.22
  • 발행 : 2015.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

The effect of reinforcing concrete members with high strength steel bars with yield strength up to 600 MPa on the overall seismic behavior of concrete moment frames was studied experimentally and numerically. Three geometrically identical plane frame models with two bays and two stories, where one frame model was reinforced with hot rolled bars (HRB) with a nominal yield strength of 335 MPa and the other two by high strength steel bars with a nominal yield strength of 600 MPa, were tested under simulated earthquake action considering different axial load ratios to investigate the hysteretic behavior, ductility, strength and stiffness degradation, energy dissipation and plastic deformation characteristics. Test results indicate that utilizing high strength reinforcement can improve the structural resilience, reduce residual deformation and achieve favorable distribution pattern of plastic hinges on beams and columns. The frame models reinforced with normal and high strength steel bars have comparable overall deformation capacity. Compared with the frame model subjected to a low axial load ratio, the ones under a higher axial load ratio exhibit more plump hysteretic loops. The proved reliable finite element analysis software DIANA was used for the numerical simulation of the tests. The analytical results agree well with the experimental results.

키워드

참고문헌

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피인용 문헌

  1. Comparative Numerical Research on the Seismic Behavior of RC Frames Using Normal and High-Strength Reinforcement vol.15, pp.4, 2017, https://doi.org/10.1007/s40999-016-0082-6
  2. Seismic performance of RC bridge piers reinforced with varying yield strength steel vol.12, pp.2, 2017, https://doi.org/10.12989/eas.2017.12.2.201
  3. Crack Risk Evaluation of Submerged Concrete Tunnel during Hardening Phase vol.2018, pp.None, 2015, https://doi.org/10.1155/2018/7354025
  4. Seismic behavior of reinforced concrete squat walls with high strength reinforcements: An experimental study vol.20, pp.3, 2019, https://doi.org/10.1002/suco.201800181