Investigation of the bearing capacity of reinforced concrete beams strengthened with reinforced concrete ring under load
Zinoviy Blikharskyy
Department of Building Constructions and Bridges; Lviv Polytechnic National University (Ukraine)
https://orcid.org/0000-0002-4823-6405
Dmytro Dubizhanskyy
Mechanical Engineering Department; Ternopil Ivan Pul’uj National Technical University (Ukraine)
Roman Khmil
Department of Building Constructions and Bridges; Lviv Polytechnic National University (Ukraine)
https://orcid.org/0000-0001-7578-8750
Abstract
Bearing capacity of normal cross section of bending concrete elements reinforced with reinforced concrete ring under load was investigated. Experimental researches of 4 sets of beams with the total number of 16 units were carried out. The results of changes of stress-strain state settings depending on the load level, additional reinforcement, influence of limit level load were analyzed. The three characteristic stages of stress-strain state of reinforced concrete beams strengthened with reinforced concrete ring were defined. Results of experimental investigations of bearing capacity of normal cross section of strengthened beams with reinforced concrete ring under load were presented. Enhancing effect was calculated. According to the results of researches of strengthened beams plots of strain of working armature depending on current bending moment were constructed.
Keywords:
reinforced concrete, normal cross sections, strengthening under load, reinforced concrete ring, bearing capacityReferences
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Authors
Zinoviy BlikharskyyDepartment of Building Constructions and Bridges; Lviv Polytechnic National University Ukraine
https://orcid.org/0000-0002-4823-6405
Authors
Dmytro DubizhanskyyMechanical Engineering Department; Ternopil Ivan Pul’uj National Technical University Ukraine
Authors
Roman KhmilDepartment of Building Constructions and Bridges; Lviv Polytechnic National University Ukraine
https://orcid.org/0000-0001-7578-8750
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