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Experimental study on seismic performance of reinforced concrete frames retrofitted with eccentric buckling-restrained braces (BRBs)

  • Yang, Yong (School of Civil Engineering, Xi'an University of Arch & Tech.) ;
  • Liu, Ruyue (School of Civil Engineering, Xi'an University of Arch & Tech.) ;
  • Xue, Yicong (School of Civil Engineering, Xi'an University of Arch & Tech.) ;
  • Li, Hui (School of Civil Engineering, Xi'an University of Arch & Tech.)
  • 투고 : 2016.04.27
  • 심사 : 2016.11.18
  • 발행 : 2017.01.25

초록

As a new type of energy dissipation component with excellent mechanical performance, the Buckling-Retrained Braces (BRBs) were gradually applied in retrofitting and improving seismic performance of reinforced concrete structures in China. In order to investigate the seismic performance of reinforced concrete structures retrofitted with BRBs, quasi-static test of two single-bay and 3-story reinforced concrete frames specimens was conducted and introduced in this paper. Two 1/2 scaled specimens were designed to reflect real prototype structure. For comparison, one control specimen was designed without BRBs, and the other specimen was retrofitted with BRBs. And particularly, for the specimen retrofitted with BRBs, the BRBs were eccentric layout instead of usually concentric or x-shaped layout, aiming to be more suitable for large-span frames. In the test, the failure mode, carrying capacity, deformability, ductility and energy dissipation ability of both two specimens were investigated. Based on the test results of the measured hysterical curves, skeleton curves, the seismic performances such as bearing capacity, plastic deformability, energy dissipation ability and ductility of two specimens were fully studied. And from the test results, it was indicated that the specimen retrofitted with BRBs showed much better seismic performance than the control specimen without BRBs, and the BRBs could effectively improve the seismic performance of the reinforced concrete frame. For the specimen retrofitted with BRBs, the BRBs firstly yielded before the beam-ends and the column-ends, and an expected yielding process or yielding mechanism as well as good seismic performance was obtained. For the specimens without BRBs, though the beam-ends yielded prior to the column-ends, the seismic performance was much poor than that of the specimen with BRBs.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

참고문헌

  1. Asgarian, B., Sadrinezhad, A. and Alanjari, P. (2010), "Seismic performance evaluation of steel moment frames through incremental dynamic analysis", J. Construct. Steel Res., 66(2), 178-190. https://doi.org/10.1016/j.jcsr.2009.09.001
  2. Baran, M., Susoy, M. and Tankut, T. (2011), "Strengthening of deficient RC frames with high strength concrete panels: an experimental study", Struct. Eng. Mech., 37(2), 177-196. https://doi.org/10.12989/sem.2011.37.2.177
  3. Bergami, A.V. and Nuti, C. (2013), "A design procedure of dissipative braces for seismic upgrading structures", Earthq. Struct., 4(1), 85-108. https://doi.org/10.12989/eas.2013.4.1.085
  4. Ding, Y.K. (2009), "Hysteretic behavior and application of unbonded steel plate brace encased in reinforced concrete panel", Ph. D. Dissertation, Harbin Institute of Technology, Harbin.
  5. Farshad, H.R. and Behrouz, A. (2014), "Effect of seismic design level on safety against progressive collapse of concentrically braced frames", Steel Compos. Struct., 16(2), 135-156. https://doi.org/10.12989/scs.2014.16.2.135
  6. Gu, L.Z., Gao, X.Y., Xu, J.W., Hu, C.H. and Wu, N. (2011), "Experimental research on seismic performance of BRB concrete frames", J. Build. Struct., 32(7), 101-111.
  7. Ishii, T., Mukai, T., Kitamura, H., Shimizu, T., Fujisawa, K. and Ishida, Y. (2004), "Seismic retrofit for Existing RC building using energy dissipative braces", 13th World Conference on Earthquake Engineering, Canada.
  8. Karalis, A.A. and Stylianidis, K.C. (2013), "Experimental investigation of existing R/C frames strengthened by high dissipation steel link elements", Earthq. Struct., 5(2), 143-160. https://doi.org/10.12989/eas.2013.5.2.143
  9. Khandelwal, K., El-Tawil, S. and Sadek, F. (2009), "Progressive collapse analysis of seismically designed steel braced frames", J. Construct. Steel Res., 65(3), 699-708. https://doi.org/10.1016/j.jcsr.2008.02.007
  10. Lee, K. and Bruneau, M. (2005), "Energy dissipation demand of compression members in concentrically braced frames", Steel. Compos. Struct., 5(5), 345-358. https://doi.org/10.12989/scs.2005.5.5.345
  11. Liu, H., Zhao, J. and Wu, H.(2013), "Seismic resistant performance of RC frame retrofit by buckling restrained brace", Earthq. Resist. Eng. Retrofit., 35(1), 23-29.
  12. Liu, J.B. (2005), "Research on the design theory of buckling-restrained braces and buckling-restrained braced frames", Masteral Dissertation, Tsinghua University, Beijing.
  13. Maheri, M.R. and Akbari, R. (2003a), "Seismic behavior factor, R, for steel X-braced and knee-braced RC buildings", Eng. Struct., 25(12), 1505-1513. https://doi.org/10.1016/S0141-0296(03)00117-2
  14. Maheri, M.R. and Hadjipour, A. (2003b), "Experimental investigation and design of steel brace connection to RC frame", Eng. Struct., 25(13), 1707-1714. https://doi.org/10.1016/S0141-0296(03)00162-7
  15. Maheri, M.R., Kousari, R. and Razazan, M. (2003c), "Pushover tests on steel X-braced and knee-braced RC frames", Eng. Struct., 25(13), 1697-1705. https://doi.org/10.1016/S0141-0296(03)00150-0
  16. Maheri, M.R. and Sahebi, A. (1997), "Use of steel bracing in reinforced concrete frames", Eng. Struct., 19(12), 1018-1024. https://doi.org/10.1016/S0141-0296(97)00041-2
  17. Uang, C.-M., Nakashima, M. and Lu, Y. (2005), "The practice and research development of buckling-restrained braced frame (III)", Prog. Steel Build. Struct., 7(1), 1-12.
  18. Wang, Y.G. (2014), "Research on seismic performance and design method of buckling-restrained brace and brace-frame structure", Ph. D. Dissertation, China University of Mining and Technology, Xuzhou.
  19. Wu, H., Zhang, Y.X., Zhang, G.W., Zhang, W. and Zhao, J. (2013), "Experimental study on seismic performance of replaceable buckling-restrained braces in reinforced concrete frame", China Civ. Eng. J., 46(11), 29-36.
  20. Xie, Q. and Zhao, L. (2006), "Research on buckling-restrained brace and its applications to structural seismic retrofitting", Earthq. Eng. Eng. Vib., 26(3), 100-103.
  21. Zhang, T.L. (2009), "Design and analysis of seismic performance of buckling-restrained braced frames", Masteral Dissertation, Beijing University of Technology, Beijing.

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