Composite slab and the joint structure

The present invention functions as a shear connector, and the tensile stress reinforcement the composite deck is in composite deck was synthesized by forming a bottom plate comprising a concrete to the lower plate, is fixed to the lower plate relates to a connection structure of the composite deck perforated vertical stiffeners; And the perforated compression reinforcement is provided on the vertical stiffener; is configured to further comprise a can reduce the weight of the bottom plate of up to 40% longer diameter than the possible reduction in thickness of the bottom plate up to 30% eventually ganhwa composite deck to design, and maintained by bottom plate increasing use because of the high quality of the composite deck life, as well as be able to produce an economical composite deck to the reduced bottom plate the upper and lower structural section in weight by reducing the thickness control it is possible to reduce costs. Composite deck, stiffeners