Experimental Study on Flexural Behavior of the Composite Bottom Slab of the Stiffened Steel Truss

Abstract In order to study the influence of rib size on flexural performance new reinforced truss concrete composite floor slab, two precast slabs and one ordinary slab were designed manufactured for tests. The failure mode under uniform load was analyzed, capacity studied. results show that stiffening steel can significantly improve stiffness effectively solve problem excessive deflection during construction. On basis experimental study, top chord bar diameter, height width short-term is deeply analyzed by using finite element refined modeling. diameter reinforcement are positively related has little effect initial which mainly plays a role in later stage.