Computers and Concrete

  • 제17권1호
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  • Pages.67-86
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  • 2016
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Fiber method analysis of rc beam retrofitted with turnbuckle external post-tensioning

  • Lejano, Bernardo A. (Department of Civil Engineering, De La Salle University)
  • 투고 : 2015.05.24
  • 심사 : 2015.12.24
  • 발행 : 2016.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

Strengthening as well as correcting unsightly deflections of reinforced concrete (RC) beam may be accomplished by retrofitting. An innovative way to do this retrofitting that is proposed in this study utilizes turnbuckle to apply external post-tensioning. This Turnbuckle External Post-Tensioning (T-EPT) was experimentally proven to improve the serviceability and load carrying capacity of reinforced concrete beams. The T-EPT system comprises a braced steel frame and a turnbuckle mechanism to provide the prestressing force. To further develop the T-EPT, this research aims to develop a numerical scheme to analyze the structural performance of reinforced concrete beams with this kind of retrofitting. The fiber method analysis was used as the numerical scheme. The fiber method is a simplified finite element method that is used in this study to predict the elastic and inelastic behavior of a reinforced concrete beam. With this, parametric study was conducted so that the effective setup of doing the T-EPT retrofitting may be determined. Different T-EPT configurations were investigated and their effectiveness evaluated. Overall, the T-EPT was effective in improving the serviceability condition and load carrying capacity of reinforced concrete beam.

키워드

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피인용 문헌

  1. Friction element for non-linear analysis of friction effect in externally prestressed beams vol.173, pp.3, 2020, https://doi.org/10.1680/jstbu.18.00040