Identification of bridge mode shapes using a passing vehicle

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Title: Identification of bridge mode shapes using a passing vehicle
Authors: O'Brien, Eugene J.
Malekjafarian, Abdollah
Permanent link: http://hdl.handle.net/10197/7045
Date: 3-Jul-2015
Abstract: This paper describes the Short Time Frequency Domain Decomposition (STFDD) method for identification of bridge mode shapes using the responses measured in a passing vehicle. Several segments are defined on a bridge and a truck-trailers system is employed to measure the signals. Subtraction of the responses measured from following axles on the truck-trailers is used to remove the effect of road profile. The sensitivity of the STFDD method to sampling time interval and vehicle velocity is investigated using numerical studies. It is shown that selecting an optimum time interval may improve the accuracy of the results obtained. Furthermore, keeping vehicle speed below 4 m/s provides enough data for successful identification of bridge mode shapes.
Type of material: Conference Publication
Publisher: International Society for Structural Health Monitoring of Intelligent Infrastructure
Copyright (published version): 2015 the Authors
Keywords: Finite element modelling;Vehicle bridge interaction (VBI);Short time frequency domain decomposition (FDD);Vehicle speed
Language: en
Status of Item: Peer reviewed
Is part of: Proceedings of the 7th International Conference on Structural Health Monitoring of Intelligent Infrastructure (SHMII 2015)
Conference Details: 7th International Conference on Structural Health Monitoring of Intelligent Infrastructure, Torino, Italy, July, 2015
Appears in Collections:Earth Institute Research Collection
Civil Engineering Research Collection

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