Long Life Bridges

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Title: Long Life Bridges
Authors: O'Brien, Eugene J.
O'Connor, Alan
Tucker, M.
Permanent link: http://hdl.handle.net/10197/6935
Date: 7-Sep-2012
Abstract: Bridges, like many Civil Engineering structures, are designed quite conservatively – the probability of dying due to collapse of a new bridge is about 1 in 10 million. Part of the reason for this conservatism is that adding extra strength to a bridge when it is being built is not expensive. For older bridges however, the situation is quite different. There is a huge difference between the cost of strengthening an existing bridge and not doing so. It is frequently possible to prove that a bridge is perfectly safe despite having deteriorated since it was first built. Sometimes the deterioration is in a non-critical element of the bridge and often the bridge has significant reserve capacity due to conservatism in the initial design process. Long Life Bridges investigates the use of probabilistic techniques in analysing the performance of bridges. This approach reduces the conservatism present in current deterministic methods, particularly in the Dynamic Amplification Factor (DAF) employed in the code. This will allow bridges to be kept in service that would otherwise have been deemed unsafe preventing unnecessary repair or replacement works and resulting in significant savings for the bridge owner
Funding Details: European Commission - Seventh Framework Programme (FP7)
Type of material: Conference Publication
Copyright (published version): 2012 the Authors
Keywords: Probabilistic analysisDynamicsLife cycle evaluationBridge researchBridge lifeFP7
Other versions: http://www.bcri.ie/
Language: en
Status of Item: Peer reviewed
Conference Details: Bridge and Concrete Research in Ireland, Dublin, 6 - 7 September, 2012
Appears in Collections:Civil Engineering Research Collection

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