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Non-linear 3D finite element analysis of the anchorage zones of pretensioned concrete girders and experimental verification

Kizzy Van Meirvenne (UGent) , Wouter De Corte (UGent) , Veerle Boel (UGent) and Luc Taerwe (UGent)
Author
Organization
Abstract
This paper focuses on the modelling of the anchorage zone of a pretensioned girder. The finite element software Abaqus was used to create a 3D non-linear finite element model (FEM). This analysis was performed on a fullscale pretensioned girder with end blocks and with various types of strand modelling, where accurate contact properties between prestressing steel and concrete are essential. The model has been validated by comparing the numerical strain results with the strain measurements on a full-scale girder with end blocks, which was produced in a precast concrete plant. At the same time, a parametric study was executed to determine the value of the coefficient of friction between the strands and the concrete and to examine the sensitivity of the input parameters of the model. The results have indicated that an accurate determination of the concrete properties at the time of release is very important. Furthermore, the Hoyer effect is analysed. It is found that the radial expansion of the strand in the finite element model is in good agreement with the theoretically calculated expansion of the strand which demonstrates the accuracy of the finite element model. In addition, it is shown that the Hoyer effect influences the force transfer of two adjacent strands. The aim of this research is to investigate the potential of an alternative FE model of a pretensioned girder based on strand to concrete frictional behaviour, rather than the commonly used models based on an assumed shear stress distribution along the transfer length.
Keywords
Pretensioned girders, Anchorage zones, FEM, ABAQUS

Citation

Please use this url to cite or link to this publication:

Chicago
Van Meirvenne, Kizzy, Wouter De Corte, Veerle Boel, and Luc Taerwe. 2018. “Non-linear 3D Finite Element Analysis of the Anchorage Zones of Pretensioned Concrete Girders and Experimental Verification.” Engineering Structures 172.
APA
Van Meirvenne, K., De Corte, W., Boel, V., & Taerwe, L. (2018). Non-linear 3D finite element analysis of the anchorage zones of pretensioned concrete girders and experimental verification. ENGINEERING STRUCTURES, 172.
Vancouver
1.
Van Meirvenne K, De Corte W, Boel V, Taerwe L. Non-linear 3D finite element analysis of the anchorage zones of pretensioned concrete girders and experimental verification. ENGINEERING STRUCTURES. Elsevier BV; 2018;172.
MLA
Van Meirvenne, Kizzy, Wouter De Corte, Veerle Boel, et al. “Non-linear 3D Finite Element Analysis of the Anchorage Zones of Pretensioned Concrete Girders and Experimental Verification.” ENGINEERING STRUCTURES 172 (2018): n. pag. Print.
@article{8567148,
  abstract     = {This paper focuses on the modelling of the anchorage zone of a pretensioned girder. The finite element software
Abaqus was used to create a 3D non-linear finite element model (FEM). This analysis was performed on a fullscale
pretensioned girder with end blocks and with various types of strand modelling, where accurate contact
properties between prestressing steel and concrete are essential. The model has been validated by comparing the
numerical strain results with the strain measurements on a full-scale girder with end blocks, which was produced
in a precast concrete plant. At the same time, a parametric study was executed to determine the value of the
coefficient of friction between the strands and the concrete and to examine the sensitivity of the input parameters
of the model. The results have indicated that an accurate determination of the concrete properties at the
time of release is very important. Furthermore, the Hoyer effect is analysed. It is found that the radial expansion
of the strand in the finite element model is in good agreement with the theoretically calculated expansion of the
strand which demonstrates the accuracy of the finite element model. In addition, it is shown that the Hoyer effect
influences the force transfer of two adjacent strands. The aim of this research is to investigate the potential of an
alternative FE model of a pretensioned girder based on strand to concrete frictional behaviour, rather than the
commonly used models based on an assumed shear stress distribution along the transfer length.},
  author       = {Van Meirvenne, Kizzy and De Corte, Wouter and Boel, Veerle and Taerwe, Luc},
  issn         = {0141-0296},
  journal      = {ENGINEERING STRUCTURES},
  keyword      = {Pretensioned girders,Anchorage zones,FEM,ABAQUS},
  language     = {eng},
  publisher    = {Elsevier BV},
  title        = {Non-linear 3D finite element analysis of the anchorage zones of pretensioned concrete girders and experimental verification},
  url          = {http://dx.doi.org/10.1016/j.engstruct.2018.06.065},
  volume       = {172},
  year         = {2018},
}

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