Using Instrumented Quarter-Cars for 'Drive By' Bridge Inspection

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Title: Using Instrumented Quarter-Cars for 'Drive By' Bridge Inspection
Authors: O'Brien, Eugene J.
Keenahan, Jennifer
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Date: 1-Jan-2013
Online since: 2019-04-30T11:42:40Z
Abstract: This paper investigates the concept of ‘drive by’ bridge inspection, a low cost alternative to Structural Health Monitoring (SHM), involving no sensors on the bridge. The concept may be of particular value after an extreme event, such as an earthquake or a flood, where a rapid indication of bridge condition is needed. Vehicle/bridge dynamic interaction is modelled to test the effectiveness of the approach. Damage is simulated here as a change in the bridge damping ratio. Two quarter cars are simulated crossing the bridge with accelerometers on board. A frequency domain analysis then illustrates changes in the Power Spectral Density of the accelerations as the bridge becomes damaged. The time-lagged difference in the accelerations is found to be effective in detecting damage. Results are compared to those with sensors on the bridge and found to be similar.
Type of material: Conference Publication
Publisher: IABSE
Keywords: BridgeDamageDampingDynamicsVehicle-bridge interactionDamage detectionDrive-by
Language: en
Status of Item: Not peer reviewed
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Conference Details: The 2013 International Association for Bridge and Structural Engineering Conference (IABSE 2013), Rotterdam, The Netherlands, 6-8 May 2013
Appears in Collections:Civil Engineering Research Collection

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