Structural Engineering and Mechanics

  • 제55권5호
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  • Pages.953-964
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  • 2015
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Torsion strength of single-box multi-cell concrete box girder subjected to combined action of shear and torsion

  • Wang, Qian (Faculty of Infrastructure Engineering, Bridge Science Research Institute, Dalian University of Technology) ;
  • Qiu, Wenliang (Faculty of Infrastructure Engineering, Bridge Science Research Institute, Dalian University of Technology) ;
  • Zhang, Zhe (Faculty of Infrastructure Engineering, Bridge Science Research Institute, Dalian University of Technology)
  • 투고 : 2015.01.26
  • 심사 : 2015.06.22
  • 발행 : 2015.09.10
⟨ 이전 논문 다음 논문 ⟩

초록

A model has been proposed that can predict the ultimate torsional strength of single-box multi-cell reinforced concrete box girder under combined loading of bending, shear and torsion. Compared with the single-cell box girder, this model takes the influence of inner webs on the distribution of shear flow into account. According to the softening truss theory and thin walled tube theory, a failure criterion is presented and a ultimate torsional strength calculating procedure is established for single-box multi-cell reinforced concrete box girder under combined actions, which considers the effect of tensile stress among the concrete cracks, Mohr stress compatibility and the softened constitutive law of concrete. In this paper the computer program is also compiled to speed up the calculation. The model has been validated by comparing the predicted and experimental members loaded under torsion combined with different ratios of bending and shear. The theoretical torsional strength was in good agreement with the experimental results.

키워드

과제정보

연구 과제 주관 기관 : Liaoning Education Department of China, National Natural Science Foundation of China

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피인용 문헌

  1. Experimental and Analytical Studies of U-Shaped Thin-Walled RC Beams Under Combined Actions of Torsion, Flexure and Shear vol.12, pp.1, 2018, https://doi.org/10.1186/s40069-018-0245-8
  2. Effective torsional strength of axially restricted RC beams vol.67, pp.5, 2015, https://doi.org/10.12989/sem.2018.67.5.465
  3. A unified approach to shear and torsion in reinforced concrete vol.77, pp.5, 2021, https://doi.org/10.12989/sem.2021.77.5.691