Type

Conference Proceedings

Authors

Daniel Martinez
Enrique Sevillano
Eugene J. O'Brien

Subjects

Physics

Topics
vibrometer bridge shm doppler laser curvature deflection instantaneous curvature damage tsd

Monitoring the Condition of a Bridge using a Traffic Speed Deflectometer Vehicle Travelling at Highway Speed (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.
Collections Ireland -> University College Dublin -> TRUSS-ITN Research Collection
Ireland -> University College Dublin -> Civil Engineering Research Collection

Full list of authors on original publication

Daniel Martinez, Enrique Sevillano, Eugene J. O'Brien

Experts in our system

1
Daniel Martinez
University College Dublin
Total Publications: 8
 
2
Enrique Sevillano
University College Dublin
Total Publications: 7
 
3
Eugene J. O'Brien
University College Dublin
Total Publications: 192