Analysis of a railway turnout system with a spot replacement sleeper

Manalo, A. C. and Aravinthan, T. and Karunasena, W. (2013) Analysis of a railway turnout system with a spot replacement sleeper. In: 22nd Australasian Conference on the Mechanics of Structures and Materials (ACMSM 22): From Materials to Structures: Advancement Through Innovation, 11-14 Dec 2012, Sydney, Australia.

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Abstract

The behaviour of a railway turnout system when one of the sleepers is replaced with a fibre composites sleeper is analyzed to simulate the spot replacement maintenance strategy. In the analysis, the rails and the sleepers are modeled as a simplified three dimensional grillage beam system with the sleepers as beams on elastic foundation. The most critical sleepers in the railway turnout system were assigned with a modulus of elasticity (MOE) of 4 GPa while keeping the elastic modulus of the other sleepers the same. The analysis showed that a spot replacement sleeper with a low MOE leads to a lowering overall stiffness of the railway track. It resulted in a reduction in the bending moment and shear and an increase in the vertical deflection of the sleeper directly under the rail seat load. Results also showed that a spot replacement sleeper material with an MOE of 4 GPa will distribute the load evenly in the neighboring timber sleepers.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 Taylor & Francis Group. Accepted version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 14 Apr 2013 05:12
Last Modified: 15 Jul 2015 00:02
Uncontrolled Keywords: railway sleepers; turnout; spot replacement
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0905 Civil Engineering > 090507 Transport Engineering
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
URI: http://eprints.usq.edu.au/id/eprint/22641

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