Controlled Semiactive Hydraulic Vibration Absorber for Bridges
Publication: Journal of Structural Engineering
Volume 122, Issue 2
Abstract
Heavy truck traffic on highway bridges is known to produce impact loads that cause large vibrations. This phenomenon can reduce the expected service life of many highway bridges. A means to mitigating those deleterious vibrations using an automatic control system that requires no pumps or line power is proposed. A semiactive hydraulic bridge vibration absorber that can be retrofitted to an existing bridge is described. The bridge/vehicle system is modeled, and a practical feedback control that uses either strain-gauge or accelerometer readings to sense the state of the system is synthesized. The results of an experimental test of the new system indicates reductions of peak amplitudes of 65–70%.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 122 • Issue 2 • February 1996
Pages: 187 - 192
Copyright
Copyright © 1996 American Society of Civil Engineers.
History
Published online: Feb 1, 1996
Published in print: Feb 1996
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