On the use of a passing vehicle for the estimation of bridge mode shapes
|Title:||On the use of a passing vehicle for the estimation of bridge mode shapes||Authors:||Malekjafarian, Abdollah; O'Brien, Eugene J.||Permanent link:||http://hdl.handle.net/10197/8779||Date:||9-Jun-2017||Abstract:||This paper presents a novel algorithm for the estimation of bridge mode shapes using the response measured on a passing vehicle. A truck-trailer system is assumed, equipped with an external excitation at a frequency close to one of the bridge natural frequencies. The excitation makes the bridge response dominant at its natural frequency. The acceleration responses are measured on two following axles of the vehicle. It is shown that the amplitude of the signal includes the operational deflected shape data which can be used to estimate the bridge mode shapes. The energy of the responses measured on two following axles is obtained using the Hilbert Huang Transform. It is shown that the bridge mode shape can be estimated with high resolution and accuracy using a rescaling process. The presence of road roughness introduces additional contributions to the response measured on the vehicle, in addition to the bridge response. The concept of subtraction of the responses measured from two identical axles is used to remove the effect of road roughness.||Funding Details:||Science Foundation Ireland||Funding Details:||Transport Infrastructure Ireland (TII)||Type of material:||Journal Article||Publisher:||Elsevier||Journal:||Journal of Sound and Vibration||Volume:||397||Start page:||77||End page:||91||Copyright (published version):||2017 Elsevier||Keywords:||Bridge mode shape; Indirect method; Vehicle bridge interaction; Hilbert Huang Transform||DOI:||10.1016/j.jsv.2017.02.051||Language:||en||Status of Item:||Peer reviewed||This item is made available under a Creative Commons License:||https://creativecommons.org/licenses/by-nc-nd/3.0/ie/|
|Appears in Collections:||Civil Engineering Research Collection|
Show full item record
If you are a publisher or author and have copyright concerns for any item, please email email@example.com and the item will be withdrawn immediately. The author or person responsible for depositing the article will be contacted within one business day.