Seismic Protection of a Building Complex Using Variable Friction Damper: Experimental Investigation
Publication: Journal of Engineering Mechanics
Volume 134, Issue 8
Abstract
This study presents an experimental investigation of seismic control of a building complex using variable friction damper. The laboratory-scale building complex was composed of a 12-story building and a three-story podium structure coupled in different configurations. The laboratory-scale variable friction damper was tailor made with a piezoelectric actuator. The performance test of the piezoelectric actuator was carried out to identify its characteristics. The performance test was then conducted on the piezo-driven variable friction damper under either constant or varying voltage to identify its motion-independent characteristics. Based on the characterization results, a close-loop operating scheme was proposed together with two classes of semiactive controllers: local-feedback controller and global-feedback controller, for real-time manipulation of the damper. The building complex was finally tested in uncoupled, rigid-coupled, passive damper-coupled, and semiactive damper-coupled configurations. The control performance of variable friction damper for the building complex was examined and compared with other cases. The test results showed that semiactive coupling control was promising for reducing seismic responses of both buildings.
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Acknowledgments
The first writer gratefully acknowledges the financial support of this research by The Hong Kong Polytechnic University under a grant from the Area Strategic Development Program in Structural Control and Intelligent Buildings. Special thanks are also expressed by the second writer to The Hong Kong Polytechnic University for additional support for this project through a postgraduate scholarship.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 134 • Issue 8 • August 2008
Pages: 637 - 649
Copyright
© 2008 ASCE.
History
Received: Mar 28, 2006
Accepted: Jan 22, 2008
Published online: Aug 1, 2008
Published in print: Aug 2008
Notes
Note. Associate Editor: Andrew W. Smyth
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