International journal of steel structures (국제강구조저널)

Korean Society of Steel Construction (한국강구조학회)
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Design Overstrength of Steel Eccentrically Braced Frames

  • Kusimaz, Ahmet (Department of Civil Engineering, Middle East Technical University) ;
  • Topkaya, Cem (Department of Civil Engineering, Middle East Technical University)
  • Published : 2013.09.30
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Abstract

The paper reports an analytical study on the design overstrength of steel eccentrically braced frames (EBFs). The study aimed at examining the influence of geometrical factors and seismic hazard on the design overstrength of EBFs. Pursuant to this goal a computer program which facilitates EBF designs was developed. The algorithm of the program adopts the lightest uniform frame design and library of link-beam-brace sub-assemblages concepts. The design output from the program was compared with published solutions and the results indicate that the algorithm developed as a part of this study is capable of providing lighter framing solutions. A parametric study was conducted using the developed computer program. The results indicate that the frames considered in this study have on average higher overstrength values when compared with the codified value even without considering potential increases due to material overstrength and strain hardening. The design overstrength was found to be influenced primarily by the link length to bay width ratio and the bay width, and secondarily by the building height and seismic hazard level.

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References

  1. AISC 327-05 (2005). Seismic Design Manual. American Institute of Steel Construction and the Structural Steel Education Council, Chicago, IL.
  2. AISC 341-05 (2005). Seismic Provisions for Structural Steel Buildings. American Institute of Steel Construction, Chicago, IL.
  3. AISC 360-05 (2005). Specification for Structural Steel Buildings. American Institute of Steel Construction, Chicago, IL.
  4. ASCE 7-10 (2010). Minimum Design Loads for Buildings and Other Structures. American Society of Civil Engineers and Structural Engineering Institute, Reston, VA.
  5. Becker, R. and Ishler, M. (1996). Seismic design practice for eccentrically braced frames based on the 1994 UBC, Steel Tips. Structural Steel Education Council, USA.
  6. Engelhardt, M. D. and Popov, E. P. (1989). "On design of eccentrically braced frames." Earthquake Spectra, 5(3), pp. 495-511. https://doi.org/10.1193/1.1585537
  7. Filippou, F. C. (2001). FedeasLab, Finite Elements in Design, Evaluation and Analysis of Structures. University of California, Berkeley, California, CA.
  8. Ghobarah, A. and Ramadan, T. (1991). "Seismic analysis of links of various lengths in eccentrically braced frames." Canadian Journal of Civil Engineering, 18(1), pp. 140-148. https://doi.org/10.1139/l91-016
  9. Goel, S. C. and Itani, A. M. (1994). "Seismic resistant special truss moment frames." ASCE Journal of Structural Engineering, 120(6), pp. 1781-1797. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:6(1781)
  10. Hjelmstad, K. D. and Popov, E. P. (1984). "Characteristics of eccentrically braced frames." Journal of Structural Engineering, 110(2), pp. 340-353. https://doi.org/10.1061/(ASCE)0733-9445(1984)110:2(340)
  11. Hjelmstad, K. D. and Lee, S. G. (1989). "Lateral buckling of beams in eccentrically-braced frames." Journal of Constructional Steel Research, 14, pp. 251-272. https://doi.org/10.1016/0143-974X(89)90039-4
  12. Koboevic, S. and Redwood, R. (1997). "Design and seismic response of shear critical eccentrically braced frames." Canadian Journal of Civil Engineering, 24(5), pp. 761-771 https://doi.org/10.1139/l97-016
  13. MathWorks, Inc. (2010). MATLAB r2010b User's Guide. Natick, MA.
  14. Okazaki, T., Arce, G., Ryu, H. C., and Engelhardt, M. D. (2005). "Experimental study of local buckling, overstrength, and fracture of links in eccentrically braced frames." Journal of Structural Engineering, 131(10), pp. 1526-1535. https://doi.org/10.1061/(ASCE)0733-9445(2005)131:10(1526)
  15. Ozhendekci, D. and Ozhendekci, N. (2008). "Effects of frame geometry on the weight and inelastic behavior of eccentrically braced chevron frames." Journal of Constructional Steel Research, 64, pp. 326-343. https://doi.org/10.1016/j.jcsr.2007.07.009
  16. Popov, E. P. and Engelhardt, M. D. (1988). "Seismic eccentrically braced frames." Journal of Constructional Steel Research, 10, pp. 321-354. https://doi.org/10.1016/0143-974X(88)90034-X
  17. Ricles, J. M. and Popov, E. P. (1994). "Inelastic link element for EBF seismic analysis." Journal of Structural Engineering, 120(2), pp. 441-463. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:2(441)
  18. Roeder, C. W. and Popov, E. P. (1978). "Eccentrically braced steel frames for earthquakes." Journal of the Structural Division, 104(ST3), pp. 391-412.
  19. Rossi, P. P. and Lombardo, A. (2007). "Influence of the link overstrength factor on the seismic behavior of eccentrically braced frames." Journal of Constructional Steel Research, 63, pp. 1529-1545. https://doi.org/10.1016/j.jcsr.2007.01.006
  20. Saritas, A. and Filippou, F. C. (2009). "Frame element for metallic shear-yielding members under cyclic loading." Journal of Structural Engineering, 135(9), pp. 1115-1123. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000041
  21. Uang, C. M. U. (1991). "Establishing R (or Rw) and Cd factors for building seismic provisions." ASCE Journal of Structural Engineering, 117(1), pp. 19-28. https://doi.org/10.1061/(ASCE)0733-9445(1991)117:1(19)
  22. UBC-94 (1994). Uniform Building Code. International Conference of Building Officials, Whittier, CA.

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