Friction‐Controllable Sliding Isolation System
Publication: Journal of Engineering Mechanics
Volume 119, Issue 9
Abstract
This paper describes the experimental and analytical study of a friction‐controllable sliding base isolation system. To overcome the problems associated with conventional passive sliding isolation systems that have hindered their practical effectiveness, a hybrid sliding base isolation system is developed using friction‐controllable bearings. This innovative hybrid system uses a variable friction force that is computer controlled by changing the pressure in the fluid chamber of the bearing. The variable friction force makes the sliding isolation system more effective in controlling the structural response under earthquakes with a broad range of intensity. A prototype hybrid sliding isolation system is physically developed and tested on a shaking table using a structural model equipped with this system. Control algorithms specially developed for controlling the frictional force that has an inherent nonlinear feature are used in this study, and their effectiveness is verified. Simulation of structural response under passive or hybrid control technique shows good agreement with the experimental results.
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Published In
Journal of Engineering Mechanics
Volume 119 • Issue 9 • September 1993
Pages: 1845 - 1864
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Jul 10, 1992
Published online: Sep 1, 1993
Published in print: Sep 1993
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