212 Ketter Hall, North Campus, Buffalo, NY 14260 www.civil.buffalo.edu Fax: 716 645 3733 Tel: 716 645 2114 x 2400 Structural Control through Base Isolation.

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Presentation transcript:

212 Ketter Hall, North Campus, Buffalo, NY Fax: Tel: x 2400 Structural Control through Base Isolation Andrei M Reinhorn Professor of Structural Engineering

Modern Methods in Earthquake and Vibration Mitigation

Elastomeric / Natural Rubber Isolators

Spectral Response Target Period 2-3sec

Spectral Response

Site Effects on Spectral Response

Steel-Laminated Elastomeric Bearings Curtesy Scougal Rubber, Seattle, WA

Deformed Seismic High Damping Rubber Bearing

Lead Rubber Bearing

Whitestone Bridge - Rubber Bearings

Friction Pendulum System

Liquid Natural Gas (LNG)Tanks Friction Pendulum System 212 Isolators -20 o C - 30 o C 1000 tons capacity 5% friction +/-30 cm lateral movement period of 2.75 sec

Hayward City Hall, CA 53 FPS 15 Taylor Fluid Dampers Period 3.0 sec 3.5% Friction +/-28 cm movement 900 tons capacity

22 FPS 5 sec period +/ m movement 2200 tons capacity R=6.2m

San Francisco Airport International Terminal 267 FPS 3 sec period +/- 60 cm movement 3000 tons capacity