Capacity Analysis And Experiment Of Steel Deck-Concrete Composite Slabs

Steel deck-concrete composite slab is adapted increasingly in more tall buildings in our country. It makes full use of steel deck and concrete and shows its advantage of bearing capacity and compositive performance. The failure mode can be divided into longitudinal shear-bond failure and flexural failure according to the different shear connector - partial shear connector and full shear connector. At the present time, specific method is still ambiguous in criterion. For the result of longitudinal shear capacity, the engineer from home and abroad usually takes m-k method to do regressive tests. And the calculate method for flexural bearing capacity - plastic flexural theory - is the same as common reinforced concrete. The stiffness of the composite slabs is transformed section stiffness. But the effect of slip is not considered. In this paper, for understanding the structure property of the profiled steel deak - concrete composite slabs with indentation, we make eight U76 and six U51 slabs' static load test for Baoye. We studied the flexural bearing capacity, longitudinal shear - bond capacity and the deformation of the slabs through results of test. We also analysed the main factor that affected the bearing capacity, such as stud, transverse reinforcement, type of concrete, thickness of steel deck and so on. The results in this paper may be referenced for an engineering technician.