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Ductile capacity study of buckling-restrained braced steel frame with rotational connections

  • Mingming Jia (School of Civil Engineering, Harbin Institute of Technology) ;
  • Jinzhou He (School of Civil Engineering, Harbin Institute of Technology) ;
  • Dagang Lu (School of Civil Engineering, Harbin Institute of Technology)
  • Received : 2021.11.25
  • Accepted : 2023.01.24
  • Published : 2023.02.10

Abstract

The maximum ductility and cumulative ductility of connection joints of Buckling-Restrained Braced Frames (BRBF) are critical to the structural overall performance, which should be matched with the BRB ductility. The two-story and one-span BRBF with a one-third scale was tested under cyclic quasi-static loading, and the top-flange beam splice (TFBS) rotational connections were proposed and adopted in BRBF. The deformation capacity of TFBS connections was observed during the test, and the relationship between structural global ductility and local connection ductility was studied. The rotational capacity of the beam-column connections and the stability performance of the BRBs are highly relevant to the structural overall performance. The hysteretic curves of BRBF are stable and full under large displacement demand imposed up to 2% story drift, and energy is dissipated as the large plastic deformation developed in the structural components. The BRBs acted as fuses and yielded first, and the cumulative plastic ductility (CPD) of BRBs is 972.6 of the second floor and 439.7 of the first floor, indicating the excellent energy dissipation capacity of BRBs. Structural members with good local ductility ensure the large global ductility of BRBF. The ductile capacity and hysteretic behavior of BRBF with TFBS connections were compared with those of BRBF with Reduced Beam Section (RBS) connections in terms of the experimental results.

Keywords

Acknowledgement

This study was funded by the Scientific Research Fund of National Natural Science Foundation of China (Grant Number: 51978220, 52078176), National Key Research and Development Program Project (Grant Number: 2019YFE0112400). All the opinions, findings, and conclusions or recommendations expressed in this paper are those of the authors and do not necessarily reflect those of the Foundations.

References

  1. American Institute of Steel Construction/Structural Engineers Association of Northern (2001), "AISC/SEAOC Recommended Provisions for Buckling-Restrained Braced Frames", Seismology and Structural Standards Committee, California, USA.
  2. Beiraghi, H. (2019), "Seismic response of dual structures comprised by Buckling-Restrained Braces (BRB) and RC walls", Struct. Eng. Mech., 72(4), 443-454. http://doi.org/10.12989/sem.2019.72.4.443.
  3. Gholipour, M. and Mazloom, M. (2018), "Seismic response analysis of mega-scale buckling-restrained bracing systems in tall buildings", Adv. Comput. Design, 3(1), 17-34. http://doi.org/10.12989/acd.2018.3.1.017.
  4. Hadianfard, M.A., Eskandari, F. and JavidSharifi, B. (2018), "The effects of beam-column connections on behavior of buckling-restrained braced frames", Steel Compos. Struct., 28(3), 309-318. https://doi.org/10.12989/scs.2018.28.3.309.
  5. Hikino, T., Okazaki, T., Kajiwara, K. and Nakashima, M. (2013), "Out-of-plane stability of buckling-restrained braces placed in chevron arrangement", J. Struct. Eng., 139(11), 1812-1822. http://doi.org/10.1061/(ASCE)ST.1943-541X.0000767.
  6. Iwata, M., Kato, T. and Wada, A. (2000), "Buckling-restrained braces as hysteretic dampers", Behavior Steel Struct. Seismic Areas, 33-38. http://doi.org/10.1201/9781003211198-6.
  7. Iwata, M., Kato, T. and Wada, A. (2018), "Performance evaluation of buckling-restrained braces in damage-controlled structures", In Stessa 2003, 37-43. Routledge.
  8. Jia, M., Yu, X., Lu, D. and Lu, B. (2017), "Experimental research of assembled buckling-restrained braces wrapped with carbon or basalt fiber", J. Construct. Steel Res., 131, 144-161. http://doi.org/10.1016/j.jcsr.2017.01.004.
  9. Jia, M., He, J. and Lu, D. (2022), " Experimental research of seismic performance of buckling-restrained braced frame with ductile connections", Structures, 41, 908-924. https://doi.org/10.1016/j.istruc.2022.05.004.
  10. Li, B., Wang, J., Baniotopoulos, C.C., Yang, J. and Hu, Y. (2020), "Seismic design and pseudo-dynamic tests of blind-bolted CFT frames with buckling-restrained braces", J. Construct. Steel Res., 167, 105857. http://doi.org/10.1016/j.jcsr.2019.105857.
  11. Liu, R., Raj, R. and Dev, N. (2019), "Analysis on damage of RC frames retrofitted with buckling-restrained braces based on estimation of damage index", Struct. Eng. Mech., 70(6), 781-791. http://doi.org/10.12989/sem.2019.70.6.781.
  12. Liu, Y., Li, H.N., Li, C. and Dong, T.Z. (2021), "Lifetime seismic performance assessment of high-rise steel-concrete composite frame with buckling-restrained braces under wind-induced fatigue", Struct. Eng. Mech., 77(2), 197-215. http://doi.org/10.12989/sem.2021.77.2.197.
  13. Mohammadi, M., Kafi, M.A., Kheyroddin, A. and Ronagh, H. (2020), "Performance of innovative composite buckling-restrained fuse for concentrically braced frames under cyclic loading", Steel Compos. Struct., 36, 163-177. http://doi.org/10.12989/scs.2020.36.2.163.
  14. Pandikkadavath, M.S. and Sahoo, D.R. (2015), "Ductility demand on reduced-length buckling restrained braces in braced frames", Adv. Struct. Eng. Mater., 3, 2373-2384. https://doi.org/10.1007/978-81-322-2187-6_180.
  15. Pandikkadavath, M.S. and Sahoo, D.R. (2017), "Mitigation of seismic drift response of braced frames using short yielding-core BRBs", Steel Compos. Struct., 23(3), 285-302. http://doi.org/10.12989/scs.2017.23.3.285.
  16. Prinz, G.S. (2007), Effect of Beam Splicing on Seismic Response of Buckling-Restrained Braced Frames, Brigham Young University.
  17. Prinz, G.S., Coy, B. and Richards, P.W. (2014), "Experimental and numerical investigation of ductile top-flange beam splices for improved buckling-restrained braced frame behavior", J. Struct. Eng., 140(9), 04014052. http://doi.org/10.1061/(ASCE)ST.1943-541X.0000930.
  18. Stratan, A., Zub, C.I. and Dubina, D. (2020), "Prequalification of a set of buckling restrained braces: Part I-experimental tests", Steel Compos. Struct., 34(4), 547-559. http://doi.org/10.12989/scs.2020.34.4.547.
  19. Tsai, K.C., Hsiao, B.C., Lai, J.W., Chen, C.H., Lin, M.L. and Weng, Y.T. (2003), "Pseudo dynamic experimental response of a full scale CFT/BRB composite frame", Proc., Joint NCREE/JRC Workshop on Int. Collaboration on Earthquake Disaster Mitigation Research.
  20. Tsai, K.C. and Hsiao, P.C. (2008), "Pseudo-dynamic test of a full-scale CFT/BRB frame-Part II: Seismic performance of buckling-restrained braces and connections", Earthq. Eng. Struct. Dyn., 37(7), 1099-1115. http://doi.org/10.1002/eqe.803.
  21. Veismoradi, S. and Darvishan, E. (2018), "Probabilistic seismic assessment of mega buckling-restrained braced frames under near-fault ground motions", Earthq. Struct, 15(5), 487-498. http://doi.org/10.12989/eas.2018.15.5.487.
  22. Walters, M.T., Maxwell, B.H. and Berkowitz, R.A. (2004), "Design for improved performance of buckling-restrained braced frames", SEAOC Annual Convention Proceedings.
  23. Wongpakdee, N., Leelataviwat, S., Goel, S.C. and Liao, W.C. (2014), "Performance-based design and collapse evaluation of buckling restrained knee braced truss moment frames", Eng. Struct., 60, 23-31. http://doi.org/10.1016/j.engstruct.2013.12.014.
  24. Zhang, G., Chen, P., Zhao, Z. and Wu, J. (2018), "Experimental study on seismic performance of rocking buckling-restrained brace steel frame with liftable column base", J. Construct. Steel Res., 143, 291-306. http://doi.org/10.1016/j.jcsr.2018.01.002.
  25. Zhao, J., Chen, R., Wang, Z. and Pan, Y. (2018), "Sliding corner gusset connections for improved buckling-restrained braced steel frame seismic performance: Subassemblage tests", Eng. Struct., 172, 644-662. http://doi.org/10.1016/j.engstruct.2018.06.031.