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Software for application of Newton-Raphson method in estimation of strains in prestressed concrete girders

  • 투고 : 2011.02.18
  • 심사 : 2011.12.08
  • 발행 : 2012.08.25

초록

Structures suffer from damages in their lifetime due to time-dependant effects, such as fatigue, creep and shrinkage, which can be expressed by concrete strains. These processes could be seen in the context of strain estimation of pre-stressed structures in two phases by using numerical methods. Their aim is checking and validating existing code procedures in determination of deformations of pre-tensioned girders by solving a system of nonlinear equations with strains as unknown parameters. This paper presents an approach based on the Newton-Raphson method for obtaining the stresses and strains in middle span section of pre-stressed girders according the equilibrium state.

키워드

과제정보

연구 과제 주관 기관 : Ministry of Education and Science

참고문헌

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피인용 문헌

  1. Design procedure for prestressed concrete beams vol.13, pp.2, 2014, https://doi.org/10.12989/cac.2014.13.2.235
  2. Creep and shrinkage effects in service stresses of concrete cable-stayed bridges vol.13, pp.4, 2012, https://doi.org/10.12989/cac.2014.13.4.483
  3. Camber calculation of prestressed concrete I-Girder considering geometric nonlinearity vol.19, pp.1, 2017, https://doi.org/10.12989/cac.2017.19.1.001