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A Comparison of Performances of Various Frictional Base Isolation Systems

by Fa-Gung Fan, Clarkson Univ, United States,
Goodarz Ahmadi, Clarkson Univ, United States,
Iradj G. Tadjbakhsh, Clarkson Univ, United States,
N. Mostaghel, Clarkson Univ, United States,



Document Type: Proceeding Paper

Part of: Computer Utilization in Structural Engineering

Abstract:

The results of a comparative study of the performances of several frictional base isolation devices including the Sliding-Joint, the French System, and the Resilient-Friction isolators with and without upper sliding plate for a multi-story building under seismic ground accelerations are presented. The accelerograms records of Pacoima Dam 1971 earthquakes is used and the acceleration, the base displacement and the deflection response spectra for structure with different base isolation systems are obtained and discussed. The effectiveness of various base isolators for a variety of structural stiffness are studied and advantages and disadvantages of different systems are discussed. The results show that the acceleration transmitted and the column stresses of the structure can be effectively reduced by using properly designed base isolation systems.

Subject Headings: Base isolation | Friction | Comparative studies | Structural analysis | Seismic design | Earthquake resistant structures | Load and resistance factor design

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