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PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING
Edited by: B.H.V. Topping and Y. Tsompanakis
Development of an Innovative Hybrid-Composite Floor System
C.M. Abeysinghe, D.P. Thambiratnam and N.J. Perera
School of Urban Development, Queensland University of Technology (QUT), Brisbane, Australia
C.M. Abeysinghe, D.P. Thambiratnam, N.J. Perera, "Development of an Innovative Hybrid-Composite Floor System", in B.H.V. Topping, Y. Tsompanakis, (Editors), "Proceedings of the Thirteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 53, 2011. doi:10.4203/ccp.96.53
Keywords: hybrid-composite floor plate systems, performance characteristics, finite element modeling, comparative studies, analysis and design.
There is a potential to develop a hybrid-composite floor plate system (HCFPS) using glass-fibre reinforced cement (GRC), polyurathane (PU) and steel laminates as the component materials to gain highly desirable properties for a floor structure. This has not yet been investigated. As a result, there is no firm basis to develop their applications. Performance characteristics of the HCFPS for the use in commercial and residential floors need to be investigated. This paper discusses the research carried out for the development of HCFPS. Finite element modelling and comparative studies carried out are briefly described in the paper.
The HCFPS is configured in such a way where positive inherent properties of individual component materials are combined to offset any weakness and achieve the optimum performance. The width of the HCFPS is limited to 2 m to suit the prefabrication and transportation requirements. The length of the HCFPS can be varied by changing the material properties and sectional configuration.
Hybrid assembly of the HCFPS using three materials is proposed for the first time. Analysis and design methods for such hybrid systems are not presented in the literature. There were no available methods to investigate the performance characteristics and limit sates of the HCFPS. Therefore, a research program is currently underway using finite element (FE) analysis supported by limited experimental testing to study the behaviour and performance characteristics of the HCFPS and to finally develop the design guidance for their applications.
Based on initial FE modelling and comparative studies, which were carried out for 3.2 m span HCFPS panels, it was possible to clarify the feasibility of HCFPS in floor construction. The stresses and strains in critical sections are well within the limits for service and ultimate loads. The stiffness of the HFPS is similar to more conventional composite floor structures according to the load-deflection plots.
HCFPS floors are about 75% lighter than steel-deck composite slabs. This could be even higher when compared with the self weight of reinforced concrete slabs. According to the cost calculations HCFPS are more economical than steel deck composite systems. Hence, HCFPS can be developed as an economical prefabricated slab system.
By combining the advantage of composite hybrid technology with proper structural configuration significant advantages in structural performance and economy can be obtained for the HCFPS.
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