MATEC Web of Conferences (Jan 2019)

Comparative study of modeling methods used to simulate initial stresses in prestressed beams towards manual analysis

  • Al-Ilani Mohamad,
  • Temsah Yehya

DOI
https://doi.org/10.1051/matecconf/201928101014
Journal volume & issue
Vol. 281
p. 01014

Abstract

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Numerical modeling of the prestressing element that generates prestressed effect in beams has always been considered a big challenge. This research compares two methods of modeling; In the first method we used initial stresses predefined stress and in the second method we used the temperature strain. Concrete damage plasticity model (CDP) was used to model the non-linear behavior of concrete material and an elasto-plastic behavior was applied to ordinary and prestressed reinforcement. Truss elements were used to model ordinary and prestressed reinforcement embedded inside the concrete. As a result, Initial Temperature load method showed less error in bottom and top stresses and cambering of beam in comparison with the basic concept method, than predefined method.

Keywords