Seismic Response Control of Buildings Using Friction Dampers

Abstract

In the last decade, many energy dissipating systems have been proposed to raise the seismic design of structures beyond the conventional ductility design approach. Among these new systems, friction damping has shown some great potential. In a friction damped system, friction damping devices are inserted in a structure and slip at a predetermined optimum load during severe seismic excitations, before any yielding of the structural members has occurred. Slipping of the devices allows the structure to dissipate the input seismic energy mechanically by friction rather than by inelastic deformation of the structural elements. This paper presents an overview of the recent research and development in Canada on a particular type of friction damped bracing. Analytical and shake table test results are first summarized to illustrate the earthquake performance of friction damped structures compared to the performance of conventional building systems. The development of a design slip load spectrum for the rapid estimation of the optimum slip load distribution is then presented. Finally, two practical examples of the implementation of this system are described: (1) the design of a reinforced concrete library building; and (2) the retrofit of a precast concrete school building.

Design of yielding metallic and friction dampers for optimal seismic performance

“…In general, these design methodologies are based on the results of extensive parametric analysis [25][26][27][28][29][30]. The studies by Filiatrault and Cherry [28; 29] and Cherry and Filiatrault [30] are especially relevant. They obtained a design for a performance index, assuming that all the friction devices placed at di erent building locations slipped at the same threshold load P d s = P s .…”

Explicit optimal hysteretic damper design in elastic-plastic structure under double impulse as representative of near-fault ground motion

“…The nonlinear properties of hysteretic dampers are similar to those of friction-damped ones (Pall and Marsh, 1982;Austin and Pister, 1985;Filiatrault and Cherry, 1990;Cherry and Filiatraut, 1993;Ciampi et al, 1995).…”

Fuzzy control of piezoelectric friction dampers for seismic protection of smart base isolated buildings

“…Friction dampers have been widely used as an energy dissipation system to reduce the structural response due to dynamic loading (Cheryy and Filiatrault 1993;Colajanni and Papia 1997;Mualla and Belev 2002;Gaul and Lenz 1997;Gaul and Nitsche 2001). They typically consist of two solid bodies that slide over each other to develop friction, which absorbs energy.…”