Monitoring the Condition of a Bridge using a Traffic Speed Deflectometer Vehicle Travelling at Highway Speed

Title: Monitoring the Condition of a Bridge using a Traffic Speed Deflectometer Vehicle Travelling at Highway Speed
Authors: O'Brien, Eugene J.
Sevillano, Enrique
Martinez, Daniel
Permanent link: http://hdl.handle.net/10197/7969
Date: 21-May-2016
Abstract: The Traffic Speed Deflectometer (TSD) is a vehicle incorporating a set of laser Doppler vibrometers on a straight beam to measure the relative velocity between the beam and the pavement surface. This paper describes a numerical study to see if a TSD could be used to detect damage in a bridge. From this measured velocity it is possible to obtain the curvature of the bridge, from whose analysis, it will be demonstrate that information on damage can be extracted. In this paper a Finite Element model is used to simulate the vehicle crossing a single span bridge, for which deflections and curvatures are calculated. From these numerical simulations, it is possible to predict the change in the curvature signal when the bridge is damaged. The method looks promising and it suggests that this drive-by approach is more sensitive to damage than sensors installed on the bridge itself.
Funding Details: European Commission Horizon 2020
Type of material: Conference Publication
Keywords: Bridge;TSD;Doppler laser;Vibrometer;Dynamics;Deflection;Curvature;Damage;SHM;Instantaneous curvature;IC
Language: en
Status of Item: Not peer reviewed
Conference Details: BCCCE 3rd International Balkans Conference on Challenges of Civil Engineering, Epoka University, Tirana, Albania, 19-21 May 2016
Appears in Collections:Civil Engineering Research Collection
TRUSS-ITN Research Collection

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