Steel and Composite Structures

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Response modification factor of suspended zipper braced frames

  • Received : 2013.07.20
  • Accepted : 2014.05.18
  • Published : 2015.01.25
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Abstract

The suspended zipper bracing system is suggested to reduce the flaws of ordinary zipper braced and concentric inverted V braced frames. In the design procedure of suspended zipper bracing systems, columns and top story truss elements are strengthened. This bracing system show different performances and characteristics compared with inverted V braced and ordinary zipper frames. As a result, a different response modification factor for suspend zipper frames is needed. In this research paper, the response modification factor of suspended zipper frames was obtained using the incremental dynamic analysis. Suspended zipper braced frames with different stories and bay lengths were selected to be representations of the design space. To analyze the frames, a number of models were constructed and calibrated using experimental data. These archetype models were subjected to 44 earthquake records of the FEMA-P695 project data set. The incremental dynamic analysis and elastic dynamic analysis were carried out to determine the yield base shear value and elastic base shear value of archetype models using the OpenSEES software. The seismic response modification factor for each frame was calculated separately and the values of 9.5 and 13.6 were recommended for ultimate limit state and allowable stress design methods, respectively.

Keywords

References

  1. Abdollahzadeh, G.R. and Banihashemi, M. (2013), "Response modification factor of dual moment-resistant frame with buckling restrained brace (BRB)", Steel Compos. Struct., Int. J., 14(6), 621-636. https://doi.org/10.12989/scs.2013.14.6.621
  2. AISC (2005), Seismic Provisions for Structural Steel Buildings, American Institute of Steel Construction, Chicago, IL, USA.
  3. ASCE (2005), Minimum Design Loads for Buildings and Other Structures, American Society of Civil Engineers.
  4. Asgarian, B. and Shokrgozar, H.R. (2008), "BRBF response modification factor", J. Construct. Steel Res., 65(2), 290-298. https://doi.org/10.1016/j.jcsr.2008.08.002
  5. ATC-19 (1995), Structural response modification factors, Applied Technology Council, Redwood City, CA, USA.
  6. ATC-34 (1995), A critical review of current approaches to earthquake resistant design, Applied Technology Council, Redwood City, CA, USA.
  7. Bruneau, M., Uang, C.M. and Wittaker, A. (1998), Ductile Design of Steel Structures, McGraw-Hill, New York, NY, USA.
  8. Fell, B.V., Kanvinde, A., Deierlein, G., Myers, A. and Fu, X. (2006), "Buckling and Fracture of Concentic Braces Under Inelastic Cyclic Loading", Steel Technical Information and Product Services (SteelTIPS), Moraga, CA, USA.
  9. FEMA-P695 (2009), Quantification of Building Seismic Performance Factors, Federal Emergency Management Agency, Washington, D.C., USA.
  10. FEMA 356 (2000), Seismic Rehabilitation Pre-Standard, Federal Emergency Management Agency, Washington, D.C., USA.
  11. Goel, S.C. (1992), "Earthquake resistant design of ductile braced steel structures", Stability and Ductility of Steel Structures under Cyclic Loading, CRC Press, Boca Raton, FL, USA.
  12. Khatib, I.F., Mahin, S.A. and Piester, K.S. (1988), "Seismic behavior of concentrically braced steel frames", Earthquake Engineering Research Center, UCB/EERC-88/01.
  13. Kim, J., Cho, C., Lee, K. and Lee, C. (2008), "Design of zipper column in inverted V braced steel frames", Proceedings of the 14th World Conference on Earthquake Engineering, Beijing, China, October.
  14. Leon, T.R. and Yang, C.S. (2003), "Special inverted V braced frames with suspended zipper struts", National Center for Research on Earthquake Engineering, International Workshop on Steel and Concrete Composite Construction, IWSCCC, Taipei, Taiwan.
  15. Mazzolani, F.M. and Piluso, V. (1996), Theory and Design of Seismic Resistant Steel Frames, E & FN Spon, London, UK.
  16. Mozzoni, S., McKenna, F., Scott, M.H., Fenves, G.L. and Jeremic, B. (2004), OpenSEES command language manual.
  17. Mwafi, A.M. and Elnashi, A.S. (2002), "Calibration of force reduction factors of RC buildings", Journal of Earthquake Engineering, 6(22): 239-73.
  18. Han, S.W., Kim, W.T. and Foutch, D.A. (2007), "Tensile strength equation for HSS bracing members having slotted end connections", Earthq. Eng. Struct. Dyn., 36(8), 995-1008. https://doi.org/10.1002/eqe.665
  19. Kim, J., Cho, C., Lee, K. and Lee, C. (2008), "Design of zipper column in inverted V braced steel frames", Proceedings of the 14th World Conference on Earthquake Engineering, Beijing, China, October.
  20. Schmidt, B.J. and Barlett, F.M. (2002), "Review of resistance factor for steel: Resistance distributions and resistance factor calibration", Can. J. Civil Eng., 29(1), 109-118. https://doi.org/10.1139/l01-082
  21. Tremblay, R. and Trica, L. (2003), "Behavior and design of multi-story zipper concentrically braced steel frames for the mitigation of soft-story response", Proceedings of the 13th World Conference on Earthquake Engineering, Vancouver, BC, Canada, August.
  22. Uang, C.M. (1991), "Establishing R (or Rw) and Cd factor for building seismic provision", J. Struct. Eng., 117(1), 19-28. https://doi.org/10.1061/(ASCE)0733-9445(1991)117:1(19)
  23. Uriz, P. (2005), "Toward earthquake-resistant design of concentrically braced steel-frame structures", Ph.D. Thesis, University of California at Berkeley, Berkeley, CA, USA.
  24. Uriz, P. and Mahin, S.A. (2004), "Seismic vulnerability assessment of concentically braced frames", J. Steel Struct., 4, 239-248.
  25. Yang, C.S. and Leon, R. (2003), "Special inverted V braced frames with suspended zipper struts", Doctoral Dissertation, Georgia Institute of Technology, GA, USA.
  26. Yang, C., Leon, R. and DesRoches, R. (2010), "Cyclic behavior of zipper-braced frames", Earthq. Spectra, 26(2), 561-582. https://doi.org/10.1193/1.3389483

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