Moving Force Identification as a Bridge Damage Indicator
|Title:||Moving Force Identification as a Bridge Damage Indicator||Authors:||Sevillano, Enrique
O'Brien, Eugene J.
Fitzgerald, P. C.
|Permanent link:||http://hdl.handle.net/10197/9241||Date:||May-2016||Abstract:||Information on the condition of bridges is primarily obtained through the use of visual inspection methods. These methods are unreliable due to an overdependence on human judgement and also inconsistencies due to human objectivity. A scientific approach is a more suitable alternative. Some authors use changes in the natural frequencies of the bridge to indicate possible damage but these methods aren't suitable for local damage detection. Mode shapes have also been used but are more difficult to infer from measurements. This paper investigates the use of a Moving Force Identification (MFI) algorithm in conjunction with bridge deflection data. MFI back-calculates a vehicles applied axle forces to a bridge. It has been found that damage in a bridge changes the calculated axle forces substantially. These calculated axle force histories are used to infer damage from. The damage indicator used here is based on a linear regression analysis of the axle force histories. It is found that the absolute value of the slope of the linear regression fit increases with damage. Hence, by monitoring this parameter, information on possible bridge damage may be supplied on a vehicle by vehicle basis.||Type of material:||Conference Publication||Publisher:||International Society for Structural Health Monitoring of Intelligent Infrastructure||Keywords:||Moving force identification; Deflection; Bridge; Damage; Camera-based monitoring||Language:||en||Status of Item:||Peer reviewed||Conference Details:||The 6th workshop on Civil Structural Health monitoring, Queens University Belfast, Northern Ireland, 26-27 May 2016|
|Appears in Collections:||Civil Engineering Research Collection|
Show full item record
This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.