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Increasing plastic hinge length using two pipes in a proposed web reduced beam section, an experimental and numerical study

  • Zahrai, Seyed M. (School of Civil Engineering, College of Engineering, The University of Tehran) ;
  • Mirghaderi, Seyed R. (School of Civil Engineering, College of Engineering, The University of Tehran) ;
  • Saleh, Aboozar (Department of Civil Engineering, Islamic Azad University Professor Hesabi Branch)
  • Received : 2016.10.15
  • Accepted : 2017.01.17
  • Published : 2017.03.20

Abstract

Experimental and numerical studies of a newly developed Reduced Beam Section (RBS) connection, called Tubular Web RBS connection (TW-RBS) have been recently conducted. This paper presents experimental and numerical results of extending the plastic hinge length on the beam flange to increase energy dissipation of a proposed version of the TW-RBS connection with two pipes, (TW-RBS(II)), made by replacing a part of flat web with two steel tubular web at the desirable location of the beam plastic hinge. Two deep-beam specimens with two pipes are prepared and tested under cyclic loads. Obtained results reveal that the TW-RBS(II) like its type I, increases story drift capacity up to 6% in deep beam much more than that stipulated by the current seismic codes. Based on test results, the proposed TW-RBS(II) helps to dissipate imposed energy up to 30% more than that of the TW-RBS(I) specimens at the same story drift and also reduces demands at the beam-to-column connection up to 30% by increasing plastic hinge length on the beam flange. The TW-RBS(II) specimens are finally simulated using finite element method showing good agreement with experimental results.

References

  1. ABAQUS/PRE (1997), User's manual, Hibbit, Karlsson and Sorensen Inc.
  2. American Institute of Steel Construction (AISC) (2010), Seismic Provisions for Structural Steel Buildings, Chicago, IL, USA.
  3. Ataollahi, S., Banan, M.R. and Banan, M.R. (2016), "Numerical cyclic behavior of T-RBS: A new steel moment connection", Steel Compos. Struct., Int. J., 21(6), 1251-1264 https://doi.org/10.12989/scs.2016.21.6.1251
  4. Eldib, M.E. (2004), "Buckling analysis of beams with corrugated webs", Proceeding of 5th International Conference on Civil and Architecture Engineering (ICCAE Conf), Singapore, May.
  5. Engelhardt, M., Winneberger, T., Zekany, A. and Potyraj, T. (1998), "Experimental investigation of Dog bone moment connections", Eng. J. AISC. Fourth Quarter, 128-139.
  6. Federal Emergency Management Agency (2000a), FEMA-350, Seismic design criteria for new moment resisting steel frame construction, Washington, D.C., USA.
  7. Federal Emergency Management Agency (2000b), FEMA-355D, State of the art report on connection performance, Washington, D.C., USA.
  8. Mirghaderi, S.R., Torabian, S. and Imanpour, A. (2010), "Seismic performance of the accordion-web RBS connection", J. Constr. Steel Res., 66, 277-288. https://doi.org/10.1016/j.jcsr.2009.09.007
  9. Morrison, M., Schweizer, D. and Hassan, T. (2015), "An innovative seismic performance enhancement technique for steel building moment resisting connections", J. Constr. Steel Res., 109, 34-46. https://doi.org/10.1016/j.jcsr.2015.02.010
  10. Naeim, F. (2001), The Seismic Design Handbook, (2nd Ed.), Kluwer Academic Publishers, 418 p.
  11. Pachoumis, D.T., Galoussis, E.G., Kalfas, C.N. and Efthimiou, I.Z. (2010), "Cyclic performance of steel moment-resisting connections with reduced beam sections-experimental analysis and finite element model simulation", Eng. Struct., 32(9), 2683-2692. https://doi.org/10.1016/j.engstruct.2010.04.038
  12. Saleh, A., Mirghaderi, S.R. and Zahrai, S.M. (2016a), "Cyclic testing of tubular web RBS connections in deep beams", J. Constr. Steel Res., 117, 214-226. https://doi.org/10.1016/j.jcsr.2015.10.020
  13. Saleh, A., Zahrai, S.M. and Mirghaderi, S.R. (2016b), "Experimental study on innovative tubular web RBS connections in steel MRFs with typical shallow beams", Struct. Eng. Mech., Int. J., 57(5), 785-808. https://doi.org/10.12989/sem.2016.57.5.785
  14. Tsavdaridis, K.D. and D'Mello, C. (2012), "Optimisation of novel elliptically-based web opening shapes of perforated steel beams", J. Constr. Steel Res., 76, 39-53. https://doi.org/10.1016/j.jcsr.2012.03.026
  15. Wilkinson, S., Hurdman, G. and Crouther, A. (2006), "A moment resisting connection for earthquake resisting structure", J. Constr. Steel Res., 62, 295-302. https://doi.org/10.1016/j.jcsr.2005.07.011
  16. Yang, Q. and Yang, N. (2009), "Seismic behaviors of steel moment resisting frames with opening in beam web", J. Constr. Steel Res., 65(6), 1323-1336. https://doi.org/10.1016/j.jcsr.2009.01.007