Reduction of bridge dynamic amplification through adjustment of vehicle suspension damping

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Title: Reduction of bridge dynamic amplification through adjustment of vehicle suspension damping
Authors: Harris, Niall K.
O'Brien, Eugene J.
González, Arturo
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Date: May-2007
Abstract: This paper presents a novel approach to the reduction of short-span bridge dynamic responses to heavy vehicle crossing events. The reductions are achieved through adjustment of the vehicle suspension damping coefficient just before the crossing. Given pre-calculations of the response of a vehicle-bridge system to a set of 'unit' road disturbances, it is shown that a single optimum damping coefficient may be determined for a given velocity and any specified road profile. This approach can facilitate implementation since the optimum damping is selected prior to the bridge and there is no need to continuously vary the damping coefficient during the crossing. The concept is numerically validated using a bridge-vehicle interaction model with several road profiles, both measured and artificially generated. The bridge-friendly damping control strategy is shown to reduce bridge dynamics across a typical range of vehicle velocities, proving most effective for road profiles that induce large vibrations in the vehicle-bridge system.
Funding Details: Irish Research Council for Science, Engineering and Technology
Type of material: Journal Article
Publisher: Elsevier
Journal: Journal of Sound and Vibration
Volume: 302
Issue: 3
Start page: 471
End page: 485
Copyright (published version): 2006 Elsevier Ltd
Keywords: SuspensionDynamicBridge-friendlyDampingAmplificationDAFDAE
Subject LCSH: Bridges--Live loads
Structural dynamics
Damping (Mechanics)
Automobiles--Springs and suspension
DOI: 10.1016/j.jsv.2006.11.020
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Language: en
Status of Item: Peer reviewed
Appears in Collections:Critical Infrastructure Group Research Collection
Civil Engineering Research Collection

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