Using Instrumented Quarter-Cars for ‘Drive By’ Bridge Inspection
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Bibliographic Details
| Author(s): |
Eugene Obrien
Jennifer Keenahan |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Conference: Assessment, Upgrading and Refurbishment of Infrastructures, Rotterdam, The Netherlands, 6-8 May 2013 | ||||
| Published in: | IABSE Conference, Rotterdam, May 2013 | ||||
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| Page(s): | 270-271 | ||||
| Total no. of pages: | 7 | ||||
| Year: | 2013 | ||||
| DOI: | 10.2749/222137813806478954 | ||||
| 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. |
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| Keywords: |
bridge damage damping dynamics vehicle-bridge interaction damage detection drive-by
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