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Ultimate Strength of Continuous Composite Concrete Slabs
Composite one-way concrete slabs with profiled steel sheeting as permanent formwork are commonly used in the building construction industry. The steel sheeting supports the wet concrete of a cast-in-situ reinforced or post-tensioned concrete slab and, after the concrete sets, acts as external reinforcement. In this type of slab, longitudinal shear failure between the concrete and the steel sheeting is the most common type of failure at the ultimate load stage. Design codes require the experimental evaluation of the longitudinal shear capacity of each type of steel decking using full scale tests in simple-span slabs. There is no procedure in current codes to evaluate the longitudinal strength of continuous composite slabs and this is often assessed by full scale tests. This paper presents the results of three full-scale tests on continuous composite concrete slabs cast with using trapezoidal steel decking profile (KF70) that is widely used in Australia. Slab specimens were tested in four-point bending at each span with shear spans of span/4.The longitudinal shear failure of each slab is evaluated and the measured mid-span deflection, the end slip and the mid-span steel and concrete strains are also presented and discussed. The slabs are modelled in a finite element (FE) software package using interface elements to model the contact between the steel decking and concrete slab.
Ultimate Strength of Continuous Composite Concrete Slabs
Composite one-way concrete slabs with profiled steel sheeting as permanent formwork are commonly used in the building construction industry. The steel sheeting supports the wet concrete of a cast-in-situ reinforced or post-tensioned concrete slab and, after the concrete sets, acts as external reinforcement. In this type of slab, longitudinal shear failure between the concrete and the steel sheeting is the most common type of failure at the ultimate load stage. Design codes require the experimental evaluation of the longitudinal shear capacity of each type of steel decking using full scale tests in simple-span slabs. There is no procedure in current codes to evaluate the longitudinal strength of continuous composite slabs and this is often assessed by full scale tests. This paper presents the results of three full-scale tests on continuous composite concrete slabs cast with using trapezoidal steel decking profile (KF70) that is widely used in Australia. Slab specimens were tested in four-point bending at each span with shear spans of span/4.The longitudinal shear failure of each slab is evaluated and the measured mid-span deflection, the end slip and the mid-span steel and concrete strains are also presented and discussed. The slabs are modelled in a finite element (FE) software package using interface elements to model the contact between the steel decking and concrete slab.
Ultimate Strength of Continuous Composite Concrete Slabs
Gholamhoseini, Alireza (author) / Gilbert, Ian (author) / Bradford, Mark (author)
International Conference on Composite Construction in Steel and Concrete 2013 ; 2013 ; North Queensland, Australia
2016-02-18
Conference paper
Electronic Resource
English
Ultimate Strength of Continuous Composite Concrete Slabs
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