Ultimate limit states design of concrete railway sleepers
The railway industry has been slow to adopt limit states principles in the structural design of concrete sleepers for its tracks, despite the global take up of this form of design for almost every other type of structural element. Concrete sleeper design is still based on limiting stresses but is widely perceived by track engineers to lead to untapped reserves of strength in the sleepers. Limit design is a more rational philosophy, especially where it is based on the ultimate dynamic capacity of the concrete sleepers. The paper describes the development of equations and factors for a limit design methodology for concrete sleepers in flexure using a probabilistic evaluation of sleeper loading. The new method will also permit a cogent, defensible means of establishing the true capacity of the billions of concrete sleepers that are currently in-track around the world, leading to better utilisation of track infrastructure. The paper demonstrates how significant cost savings may be achieved by track owners.
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|Item Type:||Journal Article|
|Keywords:||Design Methods & Aids, Rail Track Design, Risk & Probability Analysis|
|Divisions:||Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2012 I C E Publishing|
|Copyright Statement:||Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees.|
|Deposited On:||08 Jan 2013 00:08|
|Last Modified:||22 Mar 2013 22:18|
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