A Parametric Assessment of Friction Damper in Eccentric Braced Frame

In This paper, the behavior of eccentric braced frame (EBF) is studied with replacing friction damper (FD) in confluence of these braces, in 5 and 10-storey steel frames. For FD system, the main step is to determine the slip load. For this reason, the performance indexes include roof displacement, base shear, dissipated energy and relative performance should be investigated. In nonlinear dynamic analysis, the response of structure to three earthquake records has been obtained and the values of roof displacement, base shear and column axial force for FD and EBF frames have been compared. The results demonstrate that use of the FD in frames, in comparison with the EBF, substantially reduces the roof displacement, column axial force and base shear. The obtained results show suitable performance of FD in higher storey structure in comparison with the EBF.

Authors:

• J. Vaseghi
• S.Navaei
• B. Navayinia
• F. Roshantabari

Keywords:

• Friction Damper (FD)
• Slip Load
• Nonlinear Dynamic Analysis
• Performance Index.

References:

[1] A. Pall, C. March, "Response of friction damped braced frames",ASCE
Journal, PP.1313-1323.
[2] I.Aiken, D.Nims, A.Whittaker, J.Kelly,"Testing of passive energy dissipation systems, "Earthquake Spectra, 1993, PP.335-370.
[3] T.T Soong, G.F.Dargush, "Passive Energy Dissipation System Structural
Engineering", 1997, Wiley Chichester.
[4] I.Aiken,"Energy dissipation devices", 8NCEE, State of art, 2006, 100th anniversary earthquake conference.
[5] A. Pall, S.Marsh, C.Fazio, "Friction Joints for Seismic Control of Large
Panel Structure Journal of the Prestressed Concrete Institute, 1980, PP. 38-61, 25(6).
[5] Sumitomo Metal Industries, "Friction Damper for Earthquake Response
Control, " In-House Report, 1987-12.
[6] F.Gerald, T.Anagnos, T. Goodson, M. and Zsutty, "Slotted Bolted
Connections in A seismic Design for Concentrically Braced Connections", Earthquake Spectra1989, Vol.5, PP.383-391.
[7] Julius Marko, D.Thambiratnam, Nimal Perera," Influence of damping
Systems on building structures subject seismic effects", Elsevier,
Engineering, 2004, 26:1939-1956.
[8] I.Aiken, D.Nims, A.Whittaker, J.Kelly,"Testing of passive energy basis
dissipation systems", Earthquake Spectra, 1993:9(3), PP.335-370.
[9] Jim.Corner,"Introduction to structural motion control", E-book, MIT
University,2000.
[10] Imad H. Mualla a, Borislav Belev, "Performance of steel frames with a
new friction damper device under earthquake excitation", Engineering Structures, Vol.24, 2002, PP.365-371.
[11] R.Tina PALL, "Hightech Seismic Design of Le Nouvel Europa
Montreal", 13th World Conference on Earthquake Engineering, 2004,
No.2014, PP.1-6.