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Application of Laser Measurement to the Drive-by Inspection of Bridges
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| File | Description | Size | Format | |
|---|---|---|---|---|
| C168_Conf_paper_C500_-_as_pub.pdf | 1.12 MB | Adobe PDF | Download |
| Title: | Application of Laser Measurement to the Drive-by Inspection of Bridges | Authors: | Malekjafarian, Abdollah O'Brien, Eugene J. |
Permanent link: | http://hdl.handle.net/10197/7049 | Date: | 27-May-2015 | 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. | Funding Details: | Irish Research Council | Type of material: | Conference Publication | Publisher: | National Technical University of Athens (NTUA) | Keywords: | Bridge;Inspection;Drive-by;Indirect;Laser vibrometer | Language: | en | Status of Item: | Peer reviewed | Is 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 |
| Appears in Collections: | Civil Engineering Research Collection |
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