Options
Application of Laser Measurement to the Drive-by Inspection of Bridges
Date Issued
2015-05-27
Date Available
2015-09-17T09:41:37Z
Abstract
This paper introduces the application of laser vibrometer measurements to the drive-by inspection of bridges. Drive-by methods usually process the acceleration response measured from an accelerometer installed on a vehicle passing over a bridge. In this paper, two laser vibrometers and two accelerometers are installed on the vehicle to measure a rela-tive velocity between the bridge and vehicle and the vehicle acceleration. The vehicle velocity is removed from the relative velocity by subtracting the time integration of the vehicle accel-eration. It is shown by subtracting two following bridge spatial velocities at moving coordi-nates, that the spatial velocity of the road roughness can be removed. As a result, the bridge velocity at the moving coordinate is obtained. By applying the FFT to the bridge velocity, the fundamental frequency of the bridge is visible in the spectrum.
Sponsorship
Irish Research Council
Type of Material
Conference Publication
Publisher
National Technical University of Athens (NTUA)
Web versions
Language
English
Status of Item
Peer reviewed
Part of
M. Papadrakasis, V. Papadopoulos, V. Plevris (eds). Proceedings of the 5th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering 2015
Conference Details
5th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Crete Island, Greece, 25 - 27 May, 2015
ISBN
978-960-99994-7-2
This item is made available under a Creative Commons License
File(s)
Owning collection
Views
1920
Last Month
1
1
Acquisition Date
Apr 18, 2024
Apr 18, 2024
Downloads
498
Last Week
1
1
Last Month
8
8
Acquisition Date
Apr 18, 2024
Apr 18, 2024