Steel and Composite Structures

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Performance-based evaluation of strap-braced cold-formed steel frames using incremental dynamic analysis

  • Davani, M.R. (Department of Civil Engineering, Yasouj University) ;
  • Hatami, S. (Department of Civil Engineering, Yasouj University) ;
  • Zare, A. (Department of Civil Engineering, Yasouj University)
  • Received : 2015.07.15
  • Accepted : 2016.08.22
  • Published : 2016.08.30
⟨ Previous Next ⟩

Abstract

This study is an effort to clearly recognize the seismic damages occurred in strap-braced cold formed steel frames. In order to serve this purpose, a detailed investigation was conducted on 9 full scale strap-braced CFS walls and the required data were derived from the results of the experiments. As a consequence, quantitative and qualitative damage indices have been proposed in three seismic performance levels. Moreover, in order to assess seismic performance of the strap-braced CFS frames, a total of 8 models categorized into three types are utilized. Based on the experimental results, structural characteristics are calculated and all frames have been modeled as single degree of freedom systems. Incremental dynamic analysis using OPENSEES software is utilized to calculate seismic demand of the strap-braced CFS walls. Finally, fragility curves are calculated based on three damage limit states proposed by this paper. The results showed that the use of cladding and other elements, which contribute positively to the lateral stiffness and strength, increase the efficiency of strap-braced CFS walls in seismic events.

Keywords

References

  1. AISI S213-07 (2007), North American Standard for Cold -Formed Steel Framing - Lateral Design; American Iron and Steel Institute, Washington D.C., USA.
  2. Al-Kharat, M. and Rogers, C.A. (2007), "Inelastic performance of cold-formed steel strap braced walls", J. Construct. Steel Res., 63(4), 460-474. https://doi.org/10.1016/j.jcsr.2006.06.040
  3. ANSYS (2009), I. ANSYS 12.0.1 - User's manual.
  4. ASCE/SEI 7-10 (2010), Minimum design loads for buildings and other structures; American Society of Civil Engineers, Reston, VA, USA.
  5. Casafont, M., Arnedo, A., Roure, F. and Rodriguez-Ferranon, A. (2006a), "Experimental testing of joints for seismic design of lightweight structures. Part 1. Screwed joints in straps", Thin-Wall. Struct., 44(2), 197-210. https://doi.org/10.1016/j.tws.2006.01.002
  6. Casafont, M., Arnedo, A., Roure, F. and Rodriguez-Ferranon, A. (2006b), "Experimental testing of joints for seismic design of lightweight structures. Part 2: Bolted joints in straps", Thin-Wall. Struct., 44(6), 677-691. https://doi.org/10.1016/j.tws.2006.04.006
  7. Casafont, M., Arnedo, A., Roure, F. and Rodriguez-Ferranon, A. (2007), "Experimental testing of joints for seismic design of lightweight structures. Part 3: Gussets, corner joints, x-braced frames", Thin-Wall. Struct., 45, 637-659. https://doi.org/10.1016/j.tws.2007.05.008
  8. Dubina, D. (2008), "Behavior and performance of cold-formed steel-framed houses under seismic action", J. Construct. Steel Res., 64, 896-913. https://doi.org/10.1016/j.jcsr.2008.01.029
  9. FEMA P695 (2008), Quantification of Building Seismic Performance Factors, Prepared by the Building Seismic Safety Council for the Federal Emergency Management Agency; Federal Emergency Management Agency, Washington D.C., USA.
  10. FEMA P750 (2009), NEHRP recommended seismic provisions for new buildings and other structures;Federal Emergency Management Agency, Washington D.C., USA.
  11. FEMA 356 (2002), NEHRP guidelines for the seismic rehabilitation of buildings; Federal Emergency Management Agency, Washington D.C., USA.
  12. FEMA 450 (2003), NEHRP recommended provision for seismic regulations for new buildings and other structures; Federal Emergency Management Agency, Washington D.C., USA.
  13. Fulop, L.A. and Dubina, D. (2004), "Performance of wall-stud cold-formed shear panels under monotonic and cyclic loading Part II: Numerical modeling and performance analysis", Thin-Wall. Struct., 42(2), 339-349. https://doi.org/10.1016/S0263-8231(03)00064-8
  14. Ghowsi, A.F. and Sahoo, D.R. (2015), "Fragility assessment of buckling-restrained braced frames under near-field earthquakes", Steel Compos. Struct., Int. J., 19(1), 173-190. https://doi.org/10.12989/scs.2015.19.1.173
  15. Hatami, S., Ronagh, H.R. and Azhari, M. (2008), "Behaviour of thin strap-braced cold-formed steel frames under cyclic loads", Proceedings of the 5th International Conference on Thin-Walled Structures, Brisbane, Australia, June.
  16. Iuorio, O., Macillo, V., Teresa Terracciano, M., Pali, T., Fiorino, L. and Landolfo, R. (2014), "Seismic response of CFS strap-braced stud walls: Experimental investigation", Thin-Wall. Struct., 85, 466-480. https://doi.org/10.1016/j.tws.2014.09.008
  17. Karantoni, F., Tsionis, G., Lyrantzaki, F. and Fardis, M.N. (2014), "Seismic fragility of regular masonry buildings for in-plane and out-of-plane failure", Earthq. Struct., 6(6), 689-713. https://doi.org/10.12989/eas.2014.6.6.689
  18. Khaloo, A., Nozhati, S., Masoomi, H. and Faghihmaleki, H. (2016), "Influence of earthquake record truncation on fragility curves of RC frames with different damage indices", J. Build. Eng., 7, 23-30. https://doi.org/10.1016/j.jobe.2016.05.003
  19. Kiani, A., Mansouri, B. and Moghadam, A.S. (2016), "Fragility curves for typical steel frames with semirigid saddle connections", J. Construct. Steel Res., 118, 231-242. https://doi.org/10.1016/j.jcsr.2015.11.001
  20. Kim, T.W., Wilcoski, J., Foutch, D.A. and Lee, M.S. (2006), "Shaketable tests of a cold-formed steel shear panel", Eng. Struct., 28(10), 1462-1470. https://doi.org/10.1016/j.engstruct.2006.01.014
  21. Mazzoni, S., McKenna, F., Scott, M.H., Fenves, G.L. et al. (2007), OPENSEES Command Language Manual, Department of Civil Environmental Engineering, University of California, Berkley, CA, USA.
  22. Moghimi, H. and Ronagh, H.R. (2009a), "Performance of light-gauge cold-formed steel strap-braced stud walls subjected to cyclic loading", Eng. Struct., 31(1), 69-83. https://doi.org/10.1016/j.engstruct.2008.07.016
  23. Moghimi, H. and Ronagh, H.R. (2009b), "Better connection details for strap-braced CFS stud walls in seismic regions", Thin-Wall. Struct., 47(2), 122-135. https://doi.org/10.1016/j.tws.2008.07.003
  24. NBCC (2005), National Building Code of Canada, Ottawa, Canada.
  25. Shome, N. and Cornell, C.A. (1999), "Probabilistic seismic demand analysis of nonlinear structures", Report No. RMS-35; RMS Program, Stanford University, Stanford, CA, USA.
  26. Velchev, K., Comeau, G., Balh, N. and Rogers, C.A. (2010), "Evaluation of the AISI S213 seismic design procedures through testing of strap braced cold-formed steel walls", Thin-Wall. Struct., 48(10-11), 846-856. https://doi.org/10.1016/j.tws.2010.01.003

Cited by

  1. Seismic design and performance of low energy dissipative CFS strap-braced stud walls pp.1573-1456, 2018, https://doi.org/10.1007/s10518-018-0465-y
  2. Numerical study on racking behavior of light steel frames with K-shaped bracing vol.16, pp.2, 2016, https://doi.org/10.1108/wje-12-2017-0407
  3. Shake table tests of three storey cold-formed steel structures with strap-braced walls vol.17, pp.7, 2019, https://doi.org/10.1007/s10518-019-00642-z
  4. Seismic mitigation of substation cable connected equipment using friction pendulum systems vol.72, pp.6, 2016, https://doi.org/10.12989/sem.2019.72.6.785
  5. Seismic analysis of high-rise steel frame building considering irregularities in plan and elevation vol.39, pp.1, 2016, https://doi.org/10.12989/scs.2021.39.1.065
  6. Seismic performance evaluation of CFS strap-braced buildings through experimental tests vol.33, pp.None, 2016, https://doi.org/10.1016/j.istruc.2021.05.098