| Abstract [eng] |
The construction industry is focusing on finding efficient structural solutions to ensure greater strength, reliability and durability of building structures. In the industry most commonly used are concrete products that are reinforced with steel rebar, in which case the reinforcement takes tensile forces and the concrete withstands compressive forces. However, in order to provide a greater stiffness, reduce deflections and increase the strength of the vertical shear, concrete structures can also be reinforced with rigid reinforcement, in the case under consideration, I – beam. The composite slab, which is under consideration, consists of two concrete layers cast at different times and encased steel beam. First layer of concrete is manufactured in a factory, it has encased steel beam and are made as permanent formwork. The second concrete layer is cast on site and after hardening the entire structure works as a solid element. Reinforced concrete slab with rigid reinforcement and permanent formwork is an economical solution for structures that require high strength and stiffness, when trying to reduce production and installation costs. In this work two variants of composite slabs with encased steel beam are being examined. The cost of materials and construction is analyzed. All results of mechanical properties and prices are compared with properties of the calculated composite slab with profiled sheeting and the properties provided by the manufacturer of the hollow core slabs. |
