Abstract
The aim of this research is to investigate experimentally the effect of adding shear connectors to the composite deck slabs which have various geometries of steel sheeting. The behavior and resistance of composite slab is basically depending on the development of longitudinal shear resistance. In this study six specimens of composite deck slabs which have different types of geometries of steel sheets (trapezoidal, triangle and T-shapes) with dimensions (1850mm x 500mm x 110mm) were casted and tested under four-point load in presence and absence of shear connectors in order to evaluate the behavior and longitudinal shear resistance of composite slabs. The results show that the adding shear connectors to composite slabs with trapezoidal shape and triangle shape act to increase ultimate load capacity by 22.2% and 17.8% respectively as compared with composite slabs without shear connectors while effect of adding shear connectors to the composite slab with T-shape was very little or can be neglected. As well as the adding shear connectors to composite slabs with trapezoidal shape and triangle shape act to decreasing the deflection as compared with the same load also act to enhance the general performance of slabs
Highlights
Nowadays, the composite slab systems are most widely used in industry buildings or multistorey buildings
Jassim/ Diyala Journal of Engineering Sciences Vol (14) No 2, 2021: 1-17 longitudinal shear resistance can be developed by many factors which are: (i) Mechanical interlock (ii) Friction interlock between steel sheet and concrete (iii) Stud connectors (iv) End deformation of the ribs [11,12]
The presence shear connectors in composite slabs with trapezoidal shape and triangle shape act to increase ultimate load capacity by (22.2% and 17.8%) respectively as compared with composite slabs without shear connectors while the effect of adding shear connectors to the composite slab with T-shape was very little or can be neglected
Summary
The composite slab systems are most widely used in industry buildings or multistorey buildings. The composite deck slab in which the steel sheets are used initially as a permanent formwork to support the weight of concrete and subsequently when concrete hardened the steel decking acts compositely with hardening concrete as a tensile member to resistance the load applied on the floor [1]. The composite slab offers many advantages such as speed in construction, saving in time construction, weight reduction and sustainable section and other advantages listed by [2,3,4]. Jassim/ Diyala Journal of Engineering Sciences Vol (14) No 2, 2021: 1-17 longitudinal shear resistance can be developed by many factors which are: (i) Mechanical interlock (ii) Friction interlock between steel sheet and concrete (iii) Stud connectors (iv) End deformation of the ribs [11,12]
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