Renewing concrete sleepers : how long can they last?
Murray, Martin H. (2010) Renewing concrete sleepers : how long can they last? In Proceedings of the 2010 Conference on Railway Engineering, Railway Technical Society of Australasia, Wellington Convention Centre, Wellington.
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The paper explores the way in which the life of concrete sleepers can be dramatically affected by two important factors, namely impact forces and fatigue cycles. Drawing on the very limited experimental and field data currently available about these two factors, the paper describes detailed simulations of sleepers in a heavy haul track in Queensland Australia over a period of 100 years. The simulation uses real wheel/rail impact force records from that track, together with data on static bending tests of similar sleepers and preliminary information on their impact vs static strength. The simulations suggest that despite successful performance over many decades, large unplanned replacement costs could be imminent, especially considering the increasingly demanding operational conditions sleepers have sustained over their life. The paper also discusses the key factors track owners need to consider in attempting to plan for these developments.
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|Item Type:||Conference Paper|
|Keywords:||railway sleeper, renewal, life expectancy, failure, simulation|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Transport Engineering (090507)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
Past > Schools > School of Urban Development
|Copyright Owner:||Copyright 2010 Railway Technical Society of Australasia|
|Deposited On:||27 Oct 2010 07:21|
|Last Modified:||01 Mar 2012 00:22|
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