DOI QR코드

DOI QR Code

Improving the behavior of buckling restrained braces through obtaining optimum steel core length

  • Mirtaheri, Masoud (Department of Civil Engineering, K.N. Toosi University of Technology) ;
  • Sehat, Saeed (Department of Civil Engineering, K.N. Toosi University of Technology) ;
  • Nazeryan, Meissam (Department of Civil Engineering, Sharif University of Technology)
  • 투고 : 2017.12.24
  • 심사 : 2018.01.29
  • 발행 : 2018.02.25

초록

Concentric braced frames are commonly used in steel structures to withstand lateral forces. One of the drawbacks of these systems is the possibility that the braces are buckled under compressive loads, which leads to sudden reduction of the bearing capacity of the structure. To overcome this deficiency, the idea of the Buckling Restrained Brace (BRB) has been proposed in recent years. The length of a BRB steel core can have a significant effect on its overall behavior, since it directly influences the energy dissipation capability of the member. In this study, numerical methods have been utilized for investigation of the optimum length of BRB steel cores. For this purpose, BRBs with different lengths placed into several two-dimensional framing systems with various heights were considered. Then, the Response History Analysis (RHA) was performed, and finally, the optimum steel core length of BRBs and its effect on the responses of the overall system were investigated. The results show that the shortest length where failure does not occur is the best length that can be proposed as the optimum steel core length of BRBs. This length can be obtained through a formula which has been derived and verified in this study by both analytical and numerical methods.

키워드

참고문헌

  1. ASTM E-1049-85, (American Society for Testing and Materials) (2011), Standard Practices for Cycle Counting in Fatigue analysis, ASTM International, West Conshohocken, Pennsylvania, U.S.A.
  2. Black., C., Makris., N. and Aiken., I. (2002), Component Testing, Stability Analysis and Characterization of Buckling- Restrained Unbonded Braces, PEER Report No. 2002/08, University of California, Berkeley, California, U.S.A.
  3. Della Corte, G., D'Aniello, M. and Landolfo, R. (2015), "Field testing of all-steel buckling-restrained braces applied to a damaged reinforced concrete building", J. Struct. Eng., 141(1).
  4. Duggan, T.V. Lowcock, M.T. and Staples, B.C. (1979), "Predicting crack-formation life", J. Mech. Eng. Sci., 263-273.
  5. Fanaei, N. and Afsar Dizaj, E. (2014), "Response modification factor of the frames braced with reduced yielding segment BRB", Struct. Eng. Mech., 50(1), 1-17. https://doi.org/10.12989/sem.2014.50.1.001
  6. FEMA-450(2003), NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures, Part 1: Provisions, The Building Seismic Safety Council for the Federal Emergency Management Agency, Washington, U.S.A.
  7. FEMA P-695(2009), Quantification of Building Seismic Performance Factors, Prepared by Applied Technology Council for the Federal Emergency Management Agency, Washington, U.S.A.
  8. Fisher, J., Kulak, G. and Smith, I. (1988), A Fatigue Primer for Structural Engineers, National Steel Bridge Alliance, Lehigh University, Bethlehem.
  9. Fujimoto, M., Wada, A., Saeki, E., Watanabe, A. and Hitomi, Y. (1988), "A study on the unbonded brace encased in buckling-restraining concrete and steel tube", J. Struct. Constr. Eng., 34B, 249-258.
  10. Hoveidae, N., Tremblay, R., Rafezy, B. and Davaran, A. (2015), "Numerical investigation of seismic behavior of short-core allsteel buckling restrained braces", J. Constr. Steel Res., 114, 89-99. https://doi.org/10.1016/j.jcsr.2015.06.005
  11. Iranian Code of Practice for Seismic Resistant Design of Buildings (2014), Standard No. 2800-15, 4th Edition, Building and Housing Research Center of Iran (BHRC), Tehran, Iran.
  12. Jiang, Z., Guo, Y., Zhang, B. and Zhang, X. (2015), "Influence of design parameters of buckling-restrained brace on its performance", J. Constr. Steel Res., 105, 139-150. https://doi.org/10.1016/j.jcsr.2014.10.024
  13. Kim, J. and Choi, H. (2004), "Behavior and design of structures with buckling-restrained braces", Eng. Struct., 26(6), 693-706. https://doi.org/10.1016/j.engstruct.2003.09.010
  14. Kim, J., Park, J. and Kim, S. (2009), "Seismic behavior factors of buckling-restrained braced frames", Struct. Eng. Mech., 33(3), 261-284. https://doi.org/10.12989/sem.2009.33.3.261
  15. Kishore, N. and Thampan, C.P.V. (2017), "A review on earthquake vulnerability assessment", Int. Res. J. Eng. Technol., 4(3), 1885-1889.
  16. Mazzolani, F., Della Corte, G. and X D'Aniello, M. (2009), "Experimental analysis of steel dissipative bracing systems for seismic upgrading", J. Civil Eng. Manage., 15(1), 7-19. https://doi.org/10.3846/1392-3730.2009.15.7-19
  17. Mirtaheri, M., Gheidi, A., Zandi, A.P., Alanjari, P. and Rahmani Samani, H. (2011), "Experimental optimization studies on steel core lengths in buckling restrained braces", J. Constr. Steel Res., 67(8), 1244-1253. https://doi.org/10.1016/j.jcsr.2011.03.004
  18. Mirtaheri, M., Nazeryan, M., Bahrani, M.K., Nooralizadeh, A., Montazerian, L. and Naserifard, M.H. (2017), "Local and global buckling condition of all-steel buckling restrained braces", Steel Compos. Struct., 23(2), 217-228. https://doi.org/10.12989/scs.2017.23.2.217
  19. Nagao, N. and Takahashi, S. (1990), "A study on the elasto-plastic behavior of unbonded composite bracing (part 1: Experiments on isolated members under cyclic loading)", J. Struct. Constr. Eng., AIJ 415. 105-115.
  20. Nakamura, H., Maeda. Y., Sasaki. T. and Iwata. M. (2000), Fatigue Properties of Practical-Scale Unbonded Braces, Nippon Steel Technical Report.
  21. OPENSEES (2012), Open System for Earthquake Engineering Simulation, University of California, Pacific Earthquake Engineering Research Center, Berkeley, California, U.S.A.
  22. Pandikkadavath, M.S. and Sahoo, D.R. (2016), "Cyclic testing of short-length buckling-restrained braces with detachable casings", Eartq. Struct., 10(3), 699-716. https://doi.org/10.12989/eas.2016.10.3.699
  23. 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. https://doi.org/10.12989/scs.2017.23.3.285
  24. Razavi Tabatabaei, S.A., Mirghaderi, S.R. and Hosseini, A. (2014), "Experimental and numerical developing of reduced length buckling-restrained braces", J. Eng. Struct., 77, 143-160. https://doi.org/10.1016/j.engstruct.2014.07.034
  25. Talebi, E., Tahir, M.M., Zahmatkesh, F. and Kueh, A.B. (2015), "A numerical analysis on the performance of buckling restrained braces at fire-study of the gap filler effect", Steel Compos. Struct., 19(3), 661-678. https://doi.org/10.12989/scs.2015.19.3.661
  26. Uniform Building Code (UBC) (1997), International Conference of Building Officials.
  27. Wakabayashi, M., Nakamura, T., Kashibara, A., Morizono, T. and Yokoyama, H. (1973), Experimental Study of Elasto-Plastic Properties of Precast Concrete Wall Panels with Built-in Insulating Braces, Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, Structural Engineering Section 10, 1041-1044.
  28. Watanabe, A., Hitomi, Y., Yaeki, E., Wada, A. and Fujimoto, M. (1988), "Properties of brace encased in buckling-restraining concrete and steel tube", Proceedings of the 9th World Conference on Earthquake Engineering, Tokyo-Kyoto, Japan, 4, 719-724.
  29. Wu, B. and Mei, Y. (2015), "Buckling mechanism of steel core of buckling-restrained braces", J. Constr. Steel Res., 107, 61-69. https://doi.org/10.1016/j.jcsr.2015.01.012
  30. Yang, Y., Liu, R., Xue, Y. and Li, H. (2017), "Experimental study on seismic performance of reinforced concrete frames retrofitted with eccentric buckling-restrained braces (BRBs)", Earthq. Struct., 12(1), 79-89. https://doi.org/10.12989/eas.2017.12.1.079

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