Bearing capacity of RC beams reinforced with high strength rebars and steel plate

¹ Lviv Polytechnic National University, Department of Building Constructions and Bridges, 79013, 6, Karpinskogo str., Lviv, Ukraine
² Lviv Polytechnic National University, Department of Highways and Bridges, 79013, 6, Karpinskogo str., Lviv, Ukraine

^* Corresponding author: yaroslav.z.blikharskyy@lpnu.ua

Abstract

Nowadays, reducing the material content of not only buildings and structures in general, but also individual constructions is a topical task that can be realized through the use of high-strength concrete and reinforcement, as well as with the use of external reinforcement. The concentrated location of sheet reinforcement on the external the most tense facets of steel and concrete structures increases the operating height of the cross-section, makes it possible to more effectively use the strength properties of steel in comparison with conventional reinforced concrete, and with the same bearing capacity to economize on expenses. Composite and monolithic reinforced concrete structures with external reinforcement are used in various construction sectors around the world. This contributed to the expansion of the use of reinforced concrete for special buildings of power-engineering and hydrotechnical construction. The technical nd econom efficiency, as well as the possibility of using external rebar as formwork for monolithic concrete construction, have been proved. Therefore, there is a need for the study of structures with combined reinforcement, in which high rigidity of steel and concrete structures is combined with an effective use of high-strength reinforcing bars (rebar) without prior tension