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Title |
Torsional Design Method Based on Skew Bending Theory in Eurasia
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Authors |
주현진(Hyunjin Ju) ; 이득행(Deuckhang Lee) ; 메이르잔 예르자노프(Meirzhan Yerzhanov) ; 김길희(Kil-Hee Kim) ; 이창준(Chang-Joon Lee) |
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DOI |
https://doi.org/10.4334/JKCI.2021.33.2.203 |
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Keywords |
비틀림; 철근콘크리트; 경사휨이론; 러시아 설계기준; 비틀림 데이터베이스 torsion; reinforced concrete; skew-bending theory; Russian design code; torsional database |
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Abstract |
This study introduced the torsional design method specified in Russian Concrete Design Standard (SNiP) for the first time to the Korean structural engineering society; SNiP is being widely used in many Post-Soviet countries throughout the Eurasia region. Its key philosophy and basic background including detailed formulations were provided. The torsional design models specified in other structural design codes, such as ACI 318, CSA, and Eurocode are based on the space truss model with the thin wall tube analogy, while SNiP code model is based on the skew-bending theory considering the two failure modes. A total of 253 reinforced concrete (RC) torsional specimens were collected from literature for verification, and analytical accuracy was also compared to those estimated from other international building codes. It was found that the torsional strength design methods of SNiP and CSA can accurately estimate the torsional strengths of RC members, and Eurocode 2 provided a relatively conservative results. Also, ACI 318 estimated the specimens quite accurately on the conservative side. In addition, it can be observed that it is possible to estimate the torsional strengths of RC members in a conservative manner by applying the limitations on the compressive strength of concrete and yield strength of reinforcement specified in each design code.
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