Stressed cross-laminated-timber for bridge applications

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Conference Proceeding
From Materials to Structures: Advancement Through Innovation - Proceedings of the 22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012, 2013, pp. 1071 - 1076
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An increasing focus on environmentally suitable construction solutions, EngineeredWood Products (EWPs) are growing in popularity. This project aims is to investigate an EWP decking system applicable for the refurbishment of existing bridges and for new structures. Stress Laminated Timber (SLT) systems have been widely implemented worldwide and provide a structurally sound decking solution for bridges. This technology forms the background of the current research whereby the structural feasibility of stressing Cross Laminated Timber (CLT) - in substitution to solid wood boards - with Laminated Veneer Lumber (LVL) webs in T beam and cellular systems is investigated. This research focuses on serviceability testing to identify the system's behaviour under line loading to characterise the system stiffness and pad loading to understand the load distribution ability of the system. The project includes a review of SLT technology and discusses the application CLT in stressed bridge decking. Laboratory tests have been completed and analysed comprehensively. This analysis includes the system stiffness and load distribution. Recommendations for system improvement and further research are also put forward. © 2013 Taylor & Francis Group.
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