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Hi-Tech Seismic Rehabilitation of `Casino De Montreal'

by Claude Pasquin, St-Jean & Associates Inc, Montreal, Canada,
Avtar Pall, St-Jean & Associates Inc, Montreal, Canada,
Rashmi Pall, St-Jean & Associates Inc, Montreal, Canada,



Document Type: Proceeding Paper

Part of: Structures Congress XII

Abstract:

The existing eight-story steel structure, built during 1966, lacked in lateral earthquake resistance and ductility requirements of the current building code. Introduction of friction-dampers in the existing bracings was the most effective and economical solution for the seismic rehabilitation of this building. Due to high damping provided by the friction-dampers, the forces on the structure are considerably reduced. Hence, provision of additional bracings, and expensive and time consuming strengthening of existing members or foundations was not required. Friction-damped bracings have shown to be very effective to combat the distress caused by torsion due to high eccentricity. Three-dimensional nonlinear time-history dynamic analysis was used to determine the seismic performance of the structure. Compared to traditional retrofitting methods, the use of friction-dampers resulted in a net saving of more than 50% in both construction cost and construction time.

Subject Headings: Damping | Steel structures | Earthquake resistant structures | Rehabilitation | Seismic tests | Seismic effects | Steel construction | Montreal | Quebec | Canada

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