Earthquakes and Structures

  • 제12권2호
  • /
  • Pages.201-211
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  • 2017
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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 performance of RC bridge piers reinforced with varying yield strength steel

  • Su, Junsheng (Department of Bridge Engineering, Tongji University) ;
  • Dhakal, Rajesh Prasad (Department of Civil and Natural Resources Engineering, University of Canterbury) ;
  • Wang, Junjie (Department of Bridge Engineering, Tongji University) ;
  • Wang, Wenbiao (Shanghai Municipal Engineering Design Institute (Group) Co., Ltd.)
  • 투고 : 2016.12.07
  • 심사 : 2017.01.06
  • 발행 : 2017.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper experimentally investigates the effect of yield strength of reinforcing bars and stirrups on the seismic performance of reinforced concrete (RC) circular piers. Reversed cyclic loading tests of nine-large scale specimens with longitudinal and transverse reinforcement of different yield strengths (varying between HRB335, HRB500E and HRB600 rebars) were conducted. The test parameters include the yield strength and amount of longitudinal and transverse reinforcement. The results indicate that the adoption of high-strength steel (HSS) reinforcement HRB500E and HRB600 (to replace HRB335) as longitudinal bars without reducing the steel area (i.e., equal volume replacement) is found to increase the moment resistance (as expected) and the total deformation capacity while reducing the residual displacement, ductility and energy dissipation capacity to some extent. Higher strength stirrups enhance the ductility and energy dissipation capacity of RC bridge piers. While the product of steel yield strength and reinforcement ratio ($f_y{\rho}_s$) is kept constant (i.e., equal strength replacement), the piers with higher yield strength longitudinal bars are found to achieve as good seismic performance as when lower strength bars are used. When higher yield strength transverse reinforcement is to be used to maintain equal strength, reducing bar diameter is found to be a better approach than increasing the tie spacing.

키워드

과제정보

연구 과제 주관 기관 : China Scholarship Council, National Natural Science Foundation of China (NSFC), Guizhou Province Science and Technology Department

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피인용 문헌

  1. Seismic Performance Evaluation of Footing-to-Circular RC Pier Connection Reinforced by High-Manganese Steel Bars (HMSBs) vol.2018, pp.1687-8094, 2018, https://doi.org/10.1155/2018/4579869
  2. Required tie spacing to prevent inelastic local buckling of longitudinal reinforcements in RC and FRC elements vol.160, pp.None, 2017, https://doi.org/10.1016/j.engstruct.2018.01.048
  3. Experimental and numerical investigation of the seismic performance of railway piers with increasing longitudinal steel in plastic hinge area vol.17, pp.6, 2017, https://doi.org/10.12989/eas.2019.17.6.545
  4. Numerical simulation and damage analysis of RC bridge piers reinforced with varying yield strength steel reinforcement vol.130, pp.None, 2017, https://doi.org/10.1016/j.soildyn.2019.106007