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Computers and Concrete Volume 29, Number 5, May 2022 , pages 285-301 DOI: https://doi.org/10.12989/cac.2022.29.5.285 |
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Torsional strength model of reinforced concrete members subjected to combined loads |
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Hyunjin Ju, Deuckhang Lee, Wei Zhang and Lei Wang
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| Abstract | ||
| This study aims at developing a torsional strength model based on a nonlinear analysis method presented in the previous studies. To this end, flexural neutral axis depth of a reinforced concrete section and effective thickness of an idealized thin-walled tube were formulated based on reasonable approximations. In addition, various sectional force components, such as shear, flexure, axial compression, and torsional moment, were considered in estimating torsional strength by addressing a simple and linear strain profile. Existing test results were collected from literature for verifications by comparing with those estimated from the proposed model. On this basis, it can be confirmed that the proposed model can evaluate the torsional strength of RC members subjected to combined loads with a good level of accuracy, and it also well captured inter-related mechanisms between shear, bending moment, axial compression, and torsion. | ||
| Key Words | ||
| combined loads; multi-potential capacity; reinforced concrete; strain effect; torsional strength | ||
| Address | ||
| Hyunjin Ju: School of Architecture and Design Convergence, Hankyong National University, 327 Jungang-ro, Anseong, Gyeonggi 17579, Korea Deuckhang Lee: Department of Architectural Engineering, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, Chungbuk 28644, Korea Wei Zhang: Department of Architectural Engineering, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, Chungbuk 28644, Korea Lei Wang: School of Civil Engineering, Changsha University of Science and Technology, 960 Wanjiali Road, Changsha, Hunan 410114, China | ||