The contribution of steel profiled sheets to composite floor systems and review of design approaches

Chapman, William (2015) The contribution of steel profiled sheets to composite floor systems and review of design approaches. BEng dissertation, University of Portsmouth.

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    This project analyses three different profiles of steel decking in terms of their contribution to bending, shear, deflection and fire resistances in composite floor systems. The three steel decking profiles being analysed will be the R51, TR60 and TR80 as these are three commonly used steel decking profiles in construction today. The project will include critical analysis of quantitative results from computer modelling using Comflor® Composite steel decking design software Version 9 available from the TATA Steel website. For the construction stage results there is detailing on the decks’ bending moment and shear force resistances. For the normal stage results there is detailing on the slabs’ bending, vertical shear and construction deflection/Intermediate support interaction resistances in regard to the sheet thickness of a given profile and the slab depth for a particular section.
    There is a detailed review of the design approaches for steel decking, showing why we use these design procedures, what parameters they use and why they use them. A comparison is also made between designing for construction loads, acting on a 3m span steel profiled sheet and designing for the normal stage as a 3m span composite slab. This gives a qualitative review of the analytical procedures for designing steel decking used in composite floor systems.
    The project concludes that steel decking in a composite floor system contributes in three ways; during construction, when acting compositely and in fire. In construction, it contributes both to the flexural capacity of the system and the shear force resistance while concreting is taking place. Compositely, the decking contributes mostly to the flexural capacity and less so to the shear force resistance and an average percentage increase in capacity is shown. In fire it can have either a negative or positive contribution depending on the parameters.

    Item Type: Dissertation
    Departments/Research Groups: Faculty of Technology > School of Civil Engineering and Surveying
    Depositing User: Jane Polwin
    Date Deposited: 20 Aug 2015 16:40
    Last Modified: 20 Aug 2015 16:40

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