Advertisement

The Effects of Mid-Span Connection Specifications on Compressive Performance of Cross (X) Braces

  • Mussa MahmoudiEmail author
  • Alireza Shirpour
  • Arash Zarezadeh
Article
  • 18 Downloads

Abstract

The aim of this study was assessing the seismic performance of three types of mid-span connections in the cross bracing systems including: the mid-span connection with cover plates, the flanged connections and the braced ductile shear panel (BDSP). For this purpose, the linear buckling and post-buckling behavior of the cross braces with the aforementioned connections having nonlinear geometries and materials were numerically analyzed. The results were compared to the results of the common connection. According to the results, use of the cross braces with mid-span connection together with cover plates and flanged connections due to creating continuity in the mid-span connection, cause coordinated buckling of the discontinuous diagonal members (or so-called second mode buckling) and thereby improved compression performance of the cross braces. In addition, use of the ductile shear panel in the mid-span connection led to more energy dissipation by cross braces and prevented buckling of the diagonal bracing members.

Keywords

Mid-span connection Cross (X) braces Eigenvalue buckling Post-buckling Effective length factor 

References

  1. Alipour, M., & Aghakouchak, A. A. (2013). Numerical analysis of the nonlinear performance of concentrically braced frames under cyclic loading. International Journal of Steel Structures, Springer, 13(3), 401–419.CrossRefGoogle Scholar
  2. ANSI/AISC 360-10. (2010). Specification for structural steel buildings. Chicago-Illinois: American Institute of Steel Construction.Google Scholar
  3. Davaran, A. (2001). Effective length factor for discontinuous X-bracing systems. Journal of engineering mechanics, American Society of Civil Engineers, 127(2), 106–112.CrossRefGoogle Scholar
  4. Davaran, A., & Hoveidae, N. (2009). Effect of mid-connection detail on the behavior of X-bracing systems. Journal of Constructional Steel Research, 65(4), 985–990.CrossRefGoogle Scholar
  5. Deshpande, S. (2011). Buckling and Post buckling of structural components. A thesis submitted in partial fulfillment of the MS degree. Arlington: University of Texas.Google Scholar
  6. Di Sarno, L., & Elnashai, A. S. (2009). Bracing systems for seismic retrofitting of steel frames. Journal of Constructional Steel Research, 65(2), 452–465.CrossRefGoogle Scholar
  7. Elnashai, A. S., & Di Sarno, L. (2008). Fundamentals of earthquake engineering. London: Wiley.CrossRefGoogle Scholar
  8. EN 1993-1-1. (2005). Eurocode 3: Design of steel structures—Part 1-1: General rules and rules for buildings. Brussels: European Committee for Standardisation.Google Scholar
  9. Fang, C., Yam, M. C. H., Zhou, X., & Zhang, Y. (2015). Post-buckling resistance of gusset plate connections: Behaviour, strength, and design considerations. Engineering Structures, 99, 9–27.CrossRefGoogle Scholar
  10. Giannuzzi, D., Ballarini, R., Huckelbridge, A., Jr., Pollino, M., & Valente, M. (2013). Braced ductile shear panel: New seismic-resistant framing system. Journal of Structural Engineering, American Society of Civil Engineers, 140(2), 4013050.Google Scholar
  11. Krawinkler, H. (1992). Guidelines for cyclic seismic testing of components of steel structures. ATC-24, Applied Technology Council.Google Scholar
  12. Mahmoudi, M., & Zaree, M. (2010). Evaluating response modification factors of concentrically braced steel frames. Journal of Constructional Steel Research, 66(10), 1196–1204.CrossRefGoogle Scholar
  13. Moon, J., Yoon, K. Y., Han, T. S., & Lee, H. E. (2008). Out-of-plane buckling and design of X-bracing systems with discontinuous diagonals. Journal of Constructional Steel Research, 64(3), 285–294.CrossRefGoogle Scholar
  14. Palmer, K. D., Roeder, C. W., Lehman, D. E., Okazaki, T., Shield, C. K., & Powell, J. (2012). Concentric X-braced frames with HSS bracing. International Journal of Steel Structures, Springer, 12(3), 443–459.CrossRefGoogle Scholar
  15. Sabelli, R., Roeder, C. W., & Hajjar, J. F. (2013). Seismic design of steel special concentrically braced frame systems. NEHRP, Gaithersburg, USA, Seismic Design Technical Brief, 8.Google Scholar
  16. Segal, F., Levy, R., & Rutenberg, A. (1994). Design of imperfect cross-bracings. Journal of engineering mechanics, American Society of Civil Engineers, 120(5), 1057–1075.CrossRefGoogle Scholar
  17. Simulia, D. S. (2013). ABAQUS 6.13 user’s manual, Abaqus User’s Guide. Providence, RI: Dassault Systems.Google Scholar
  18. Stoman, S. H. (1988). Stability criteria for X-bracing systems. Journal of engineering mechanics, American Society of Civil Engineers, 114(8), 1426–1434.CrossRefGoogle Scholar
  19. Stoman, S. H. (1989). Effective length spectra for cross bracings. Journal of Structural Engineering, American Society of Civil Engineers, 115(12), 3112–3122.Google Scholar
  20. Thornton, W. A. (1984). Bracing connections for heavy construction. Engineering Journal, AISC, 21(3), 139–148.Google Scholar
  21. Uang, C. M., Bruneau, M., Whittaker, A. S., & Tsai, K. C. (2001). Seismic design of steel structures. In F. Naeim (Ed.), The seismic design handbook (pp. 409–462). Boston, MA: Springer.CrossRefGoogle Scholar
  22. Wang, D. Q., & Boresi, A. P. (1992). Theoretical study of stability criteria for X-bracing systems. Journal of engineering mechanics, American Society of Civil Engineers, 118(7), 1357–1364.CrossRefGoogle Scholar
  23. Whitmore, R. E. (1952). Experimental investigation of stresses in gusset plates. Engineering Experiment Station. Knoxville: University of Tennessee.Google Scholar
  24. Yam, M. C. H., & Cheng, J. J. R. (1993). Experimental investigation of the compressive behavior of gusset plate connections. Alberta: University of Alberta, Department of Civil Engineering.Google Scholar
  25. Yoo, C. H., & Lee, S. (2011). Stability of structures: Principles and applications. Amsterdam: Elsevier.Google Scholar
  26. Yoo, J. H., Lehman, D. E., & Roeder, C. W. (2008). Influence of connection design parameters on the seismic performance of braced frames. Journal of Constructional Steel Research, 64(6), 607–623.CrossRefGoogle Scholar

Copyright information

© Korean Society of Steel Construction 2018

Authors and Affiliations

  1. 1.Faculty of Civil EngineeringShahid Rajaee Teacher Training UniversityLavizan, TehranIslamic Republic of Iran
  2. 2.Faculty of Civil EngineeringShahid Rajaee Teacher Training UniversityTehranIslamic Republic of Iran

Personalised recommendations