Alternate structural system of incorporating flat bed rail wagons as low volume road bridge decks

Palliyaguru, Nishantha, Jamtsho, Lungten, Dhanasekar, Manicka, & Bayissa, Wirtu (2010) Alternate structural system of incorporating flat bed rail wagons as low volume road bridge decks. In Proceedings of The 5th Civil Engineering Conference in the Asian Region and Australasian Structural Engineering Conference 2010, Engineers Australia, Sydney Convention and Exhibition Centre, Sydney, pp. 1-6.

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The stimulus for this project rose from the need to find an alternative solution to aging superstructures of road-bridge in low volume roads (LVR). The solution investigated, designed and consequently plans to construct, involved replacing an aging super-structure of a 10m span bridge with Flat-Bed Rail Wagon (FBRW). The main focus of this paper is to present alternate structural system for the design of the FBRW as road bridge deck conforming to AS5100. The structural adequacy of the primary members of the FBRW was first validated using full scale experimental investigation to AS5100 serviceability and ultimate limit state loading. The bare FBRW was further developed to include a running surface. Two options were evaluated during the design phase, namely timber and reinforced concrete. First option, which is presented here, involved strengthening of the FBRW using numerous steel sections and overlaying the bridge deck with timber planks. The idea of this approach was to use all the primary and secondary members of the FBRW in load sharing and to provide additional members where weaknesses in the original members arose. The second option, which was the preferred option for construction, involved use of primary members only with an overlaying reinforced concrete slab deck. This option minimised the risk associated with any uncertainty of secondary members to its structural adequacy. The paper will report selected results of the experiment as well as the design phases of option one with conclusions highlighting the viability of option 1 and its limitations.

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ID Code: 33022
Item Type: Conference Paper
Refereed: Yes
Keywords: Rail Wagon, Bridge Deck, Low Volume Road, Alterate Structure
ISBN: 978-0-646-53727-6
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Infrastructure Engineering and Asset Management (090505)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2010 [please consult the authors]
Deposited On: 05 Jul 2010 22:13
Last Modified: 29 Feb 2012 14:33

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