Strengthening of Cast-In-Situ Long-Span Reinforced Concrete Roofs Using Pre-Stressed Wire-Rope Reinforcement
The article describes the strengthening of monolithic reinforced concrete coatings of the large-span roof of the sports hall of the school with elements with a curvilinear arrangement of pre-stressed wire-rope reinforcement. The use of pre-stressed wire-rope reinforcement as a reinforcement of reinforced concrete floors and coatings made it possible to simplify the production of reinforcement elements, reduce the time of installation work and eliminate the execution of preparatory work on opening. In the process of installation, the reinforcement elements fixed on the structures perceive the loads, pre-strengthening and increasing their bearing capacity both from the bending moments and from the shearing forces (punching) on the supports. As a result of the work carried out, the mass of the used structures was significantly reduced and the costs of construction and installation work were reduced compared to traditional methods of strengthening.