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Behavior modeling until failure of composite steel–concrete beams with external prestressing
https://orcid.org/http://orcid.org/0000-0003-2033-6217
In this article, we present a numerical model allowing to simulate the behavior until failure of isostatic and hyperstatic composite (steel–concrete) beams with an external prestressing system, taking into account the different arrangements of the cables located under the deviators. In this numerical calculation model, the external prestress is modeled by cable elements which go from deviator to deviator, which allows us to better simulate the behavior of the different cables, while taking into account second-order effects, overstress of cables and their possible slippage. The numerical calculation procedure is based on the displacement method to solve the equilibrium equation of the structure, which links the increases in displacements to the increases in stresses on external loads, and the possible action of the prestressing by cables external to the tensioning. The nonlinear problem is solved using an iterative method, in which the tangent stiffness matrix is recalculated at each step connecting the increases in displacements to the increases in forces. The mechanical model was implemented on several isostatic and hyperstatic beams with various forms and details of reinforcement, where the predictions of our model are in very good agreement with the numerical and experimental results in any domain of behavior.
Behavior modeling until failure of composite steel–concrete beams with external prestressing
https://orcid.org/http://orcid.org/0000-0003-2033-6217
In this article, we present a numerical model allowing to simulate the behavior until failure of isostatic and hyperstatic composite (steel–concrete) beams with an external prestressing system, taking into account the different arrangements of the cables located under the deviators. In this numerical calculation model, the external prestress is modeled by cable elements which go from deviator to deviator, which allows us to better simulate the behavior of the different cables, while taking into account second-order effects, overstress of cables and their possible slippage. The numerical calculation procedure is based on the displacement method to solve the equilibrium equation of the structure, which links the increases in displacements to the increases in stresses on external loads, and the possible action of the prestressing by cables external to the tensioning. The nonlinear problem is solved using an iterative method, in which the tangent stiffness matrix is recalculated at each step connecting the increases in displacements to the increases in forces. The mechanical model was implemented on several isostatic and hyperstatic beams with various forms and details of reinforcement, where the predictions of our model are in very good agreement with the numerical and experimental results in any domain of behavior.
Behavior modeling until failure of composite steel–concrete beams with external prestressing
https://orcid.org/http://orcid.org/0000-0003-2033-6217
In this article, we present a numerical model allowing to simulate the behavior until failure of isostatic and hyperstatic composite (steel–concrete) beams with an external prestressing system, taking into account the different arrangements of the cables located under the deviators. In this numerical calculation model, the external prestress is modeled by cable elements which go from deviator to deviator, which allows us to better simulate the behavior of the different cables, while taking into account second-order effects, overstress of cables and their possible slippage. The numerical calculation procedure is based on the displacement method to solve the equilibrium equation of the structure, which links the increases in displacements to the increases in stresses on external loads, and the possible action of the prestressing by cables external to the tensioning. The nonlinear problem is solved using an iterative method, in which the tangent stiffness matrix is recalculated at each step connecting the increases in displacements to the increases in forces. The mechanical model was implemented on several isostatic and hyperstatic beams with various forms and details of reinforcement, where the predictions of our model are in very good agreement with the numerical and experimental results in any domain of behavior.
Behavior modeling until failure of composite steel–concrete beams with external prestressing
Asian J Civ Eng
Benyahi, Karim (author) / Kachi, Mohand Said (author) / Bouafia, Youcef (author) / Barboura, Salma (author) / Oudjene, Marc (author)
Asian Journal of Civil Engineering ; 23 ; 17-37
2022-01-01
21 pages
Article (Journal)
Electronic Resource
English
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