The Effect of Vertical Shear-Link in Improving the Seismic Performance of Structures with Eccentrically Bracing Systems

Authors: Mohammad Reza Baradaran, Farhad Hamzezarghani, Mehdi Rastegari Ghiri, Zahra Mirsanjari

Abstract:

Passive control methods can be utilized to build earthquake resistant structures, and also to strengthen the vulnerable ones. In this paper, we studied the effect of this system in increasing the ductility and energy dissipation and also modeled the behavior of this type of eccentric bracing, and compared the hysteresis diagram of the modeled samples with the laboratory samples. We studied several samples of frames with vertical shear-links in order to assess the behavior of this type of eccentric bracing. Each of these samples was modeled in finite element software ANSYS 9.0, and was analyzed under the static cyclic loading. It was found that vertical shear-links have a more stable hysteresis loops. Another analysis showed that using honeycomb beams as the horizontal beam along with steel reinforcement has no negative effect on the hysteresis behavior of the sample.

Keywords: Vertical shear-link, passive control, cyclic analysis, energy dissipation, honeycomb beam.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1108767

References:

[1] E. Fehling, W. Pauli and J. G. Bauwkamp, “Use of vertical shear-Link in eccentrically braced frames” Earthquake Engineering , 10th World Conference 1992 Balkema , Rotterdam.
[2] Y. Mahrozadeh, “The application of shear panels in passive control conventional steel structures” Master's thesis, Faculty of Engineering, Tehran University, 2005, Tehran, Iran.
[3] S. M. Zahrai, “Behavior of Vertical Link Beam in Steel Structures. Building & Housing Research Center, BHRC Publication No.R-515, 2009.
[4] P. Dusicka, A. M. Itani and I. G. Buckle, “Evaluation of Conventional and Specialty Steels in Shear Link Hysteretic Energy Dissipaters.” Proceedings of the 13th World Conference on Earthquake Engineering, Vancouver B.C, Canada, 2004.
[5] P. Dusicka, A. M. Itani, “Behavior of Built-Up Shear Links Under Large Cyclic Deformations.” Proceedings of the 2002 Annual Meeting of the Structural Stability Research Council, Structural Stability Research Council, Gainesville, FL.
[6] M. D. Engelhardt, E. P. Popov, “Experimental performance of long links in eccentrically braced frames.” J. Struct. Engrg., ASCE,1992, Vol. 118, No.11, PP. 3067-3088.
[7] American Institute of Steel Construction, AISC 2002, “Load and resistance factor design.” Manual of Steel Construction.
[8] International building code, IBC2003, Whitier, California.
[9] J. G. Boukamp, M. G. Vetr, “Design of Eccentrically Braced Test Frame With Vertical Shear Link Proceedings of the 2nd Int”, Con, On Earthquake Resistant Construction and Design, Berlin, June, 1994.
[10] M. G. Vetr, "Seismic behavior and design and analysis of crosswise braced frames with vertical shear joint" Journal of Earthquake Engineering and Seismology, Tehran, 1999.
[11] J. G. Boukamp, M.G. Vetr, “Design of Eccentrically Braced Test Frame with Vertical Shear Link.” Proceeding of the Second Int., Con. On Earthquake Resistant Construction and Design, Berlin, 1994.
[12] American Institute of Steel Construction, AISC 2002, “Load and resistance factor design.” Manual of Steel Construction.
[13] UBC, “Uniform Building Code”, International Conference of Building Officials, Whittier, Calif, 1997.
[14] AISC, “Seismic Provisions for Structural Steel Buildings.”, American Institute of Steel Construction, Chicago, IL, 1997
[15] CISC, “Canadian Institute of Steel Construction, Handbook of Steel Construction”, Willowdale, Ontario, 1991.
[16] S. M. Zahrai, Y. Mahrozade, “Vitro study of utilization of vertical shear links in order to improve the seismic performance of steel structures”, Journal of civil engineering and surveying -Faculty of Engineering, Volume 44, Number 3, September 2010, pp. 379 to 393.