Effect of loop reinforcement joints on the strength of eccentrically compressed reinforced concrete structures
https://doi.org/10.37538/2224-9494-2024-2(41)-61-68
EDN: HLQFZJ
Abstract
Introduction. Using loop joints of working reinforcement in flexural reinforced concrete members reduces labor costs when installing reinforcement cages at the construction site. However, the analysis of the available research showed that they were carried out mainly for flexural members. In this regard, additional experimental studies were carried out to assess the effect of various types of design solutions of loop reinforcement joints on the strength of normal sections of eccentrically compressed reinforced concrete elements.
Aim. To obtain the results of experimental studies and assess the effect of design solutions of loop reinforcement joints on the strength of eccentrically compressed reinforced concrete elements.
Materials and methods. The research involved the results of tests of eccentrically compressed reinforced concrete elements with loop joints of working reinforcement. As part of the research, 7 series of samples with different design solutions of loop joints were tested. The total number of samples in the research comprised 22 items.
Results. The research revealed the effect of design solutions of loop reinforcement joints on the strength of eccentrically compressed reinforced concrete elements – on average from 3 to 14 %, depending on the design solution of the loop joint.
Conclusions. It was found that the design of eccentrically compressed elements should be carried out taking into account the design of the loop joint of longitudinal reinforcement.
Keywords
reinforced concrete,
structures,
strength,
stiffness,
cracking resistance,
loop reinforcement joint,
eccentrically compressed element
Supporting agencies: The study was carried out within the framework of contractual works of JSC Research Center of Construction and Federal Autonomous Institution “Federal Center for Regulation, Standardization and Technical Assessment in Construction” (FAU “FCC”).
About the Author
S. A. Zenin
Research Institute of Concrete and Reinforced Concrete named after A.A. Gvozdev, JSC Research Center of Construction
Russian Federation
Russian Federation
Sergey A. Zenin, Cand. Sci. (Engineering), Head of the Laboratory of the Theory of Reinforced Concrete Structures and Structural Systems
2nd Institutskaya str., 6, bld. 5, Moscow, 109428, Russian Federation
e-mail: lab01@mail.ru
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Review
For citations:
Zenin S.A. Effect of loop reinforcement joints on the strength of eccentrically compressed reinforced concrete structures. Bulletin of Science and Research Center of Construction. 2024;41(2):61-68. (In Russ.) https://doi.org/10.37538/2224-9494-2024-2(41)-61-68. EDN: HLQFZJ
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