A discrete and explicit representation of tendons based on coupling finite elements for numerical analysis of prestressed concrete structures

Autores

  • Osvaldo L. Manzoli Department of Civil Engineering, Sao Paulo State University, Bauru-SP, Brazil
  • Lu ́ıs A. G. Bitencourt Jr. Dept. of Structural and Geotechnical Engineering, University of Sao Paulo, Sao Paulo-SP, Brazil
  • Paulo V. C. N. da Gama Dept. of Structural and Geotechnical Engineering, University of Sao Paulo, Sao Paulo-SP, Brazil

Palavras-chave:

Prestressed concrete, Coupling finite element, Tendon-concrete interaction, Unbonded post-tensioned, Bonded post-tensioned.

Resumo

This work presents a new strategy for representing tendons with a discrete and explicit approach to
numerical analysis of prestressed concrete structures via finite element method. The prestressing tendons are
represented by one-dimensional truss finite elements with the behavior described through a bilinear elastoplastic
model with a prescription for initial deformations. The concrete and prestressing tendons are inititally discretized in
finite elements in a totally independent way. Then, coupling finite elements are inserted to describe the interaction
between tendons and concrete. A damage constitutive model is used for modeling unbonded postensioned cases.
The proposed approach is validated through the numerical simulation of benchmarks available in the literature and
a good agreement between them can be observed.

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Publicado

2024-04-26

Edição

v. 5 n. 05 (2023): CILAMCE 2023

Seção

M8 Numerical modeling of concrete structures

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