Experimental studies of the stress-strain state of reinforced concrete structures strengthened by prestressed basalt-composite rebar

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Abstract


Relevance. In recent years, composite materials have become widespread in the construction of reinforced concrete structures for industrial, civil and transport structures. It is proposed to strengthen the reinforced concrete structures of hydraulic structures with prestressed basalt composite rebar. It took an experimental and theoretical substantiation of technical solutions to strengthen the reinforced concrete structures of hydraulic structures with prestressed basalt composite reinforcement. The aim of the work was to carry out a set of experimental and theoretical studies of the stress-strain state and internal forces in low-reinforced concrete structures of hydraulic structures reinforced with prestressed basalt composite rebar. Methods. Experimental studies of the stress-strain state and internal forces were carried out on the basis of low-reinforced concrete beam-type models with interblock construction joints, harden with prestressed basalt composite reinforcement in the stretched (compressed) zones of the models. Theoretical studies of the stress-strain state and internal forces were carried out on the basis of the theory of reinforced concrete and structural mechanics. Results. As a result of the research carried out on typical low-reinforced concrete structures of hydraulic structures with interblock construction joints, the main stages of the stress-strain state of hydraulic reinforced concrete structures were formulated. Based on the data of experimental and theoretical studies, taking into account the reinforcement with prestressed basalt composite rebar, as well as with prestressed clamps in the shear zone, a method was developed for calculating the strength of low-reinforced hydrotechnical reinforced concrete structures with interblock construction joints.


About the authors

Oleg D. Rubin

Scientific Research Institute of Energy Structures - branch of JSC “Institute Hydroproject”

Author for correspondence.
Email: cskte@mail.ru
SPIN-code: 2720-6627
2 Volokolamskoe Shosse, bldg 1, Moscow, 125080, Russian Federation

Director, Scientific Research Institute of Energy Structures - branch of JSC “Institute Hydroproject”, Doctor of Technical Sciences

Sergey E. Lisichkin

Engineering Center of Structures, Constructions and Technologies in Power Engineering, Ltd

Email: cskte@mail.ru
35 Svobody St, bldg 36, Moscow, 125364, Russian Federation

Deputy General Director, Engineering Center of Structures, Constructions and Technologies in Power Engineering, Ltd., Doctor of Technical Sciences

Oksana V. Zyuzina

B.E. Vedeneev All-Russia Research Institute of Hydraulic Engineering

Email: cskte@mail.ru
SPIN-code: 6769-5035
21 Gzhatskaya St, Saint Petersburg, 195220, Russian Federation

engineer of the 1st category, postgraduate student

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