Open AccessExperimental studies of the stress-strain state of reinforced concrete structures strengthened by prestressed basalt-composite rebar
Author(s) -
О. Д. Рубин,
Рубин Олег Дмитриевич,
С. Е. Лисичкин,
Лисичкин Сергей Евгеньевич,
O. V. Zyuzina,
Зюзина Оксана Валерьевна
Publication year - 2021
Publication title -
stroitelʹnaâ mehanika inženernyh konstrukcij i sooruženij
Language(s) - English
Resource type - Journals
eISSN - 2587-8700
pISSN - 1815-5235
DOI - 10.22363/1815-5235-2021-17-3-288-298
Subject(s) - rebar , structural engineering , reinforcement , limit state design , composite number , materials science , prestressed concrete , reinforced solid , stress–strain curve , basalt fiber , stress (linguistics) , geotechnical engineering , composite material , deformation (meteorology) , engineering , fiber , linguistics , philosophy
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.