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L. Parente¹, D. Addessi¹ and E. Spacone²

¹Department of Structural and Geotechnical Engineering, Sapienza University of Rome, Italy
²Department of Engineering and Geology University G. D’Annunzio of Chieti-Pescara, Italy

doi:10.4203/ccc.3.12.1

L. Parente, D. Addessi, E. Spacone, "A 3D fiber beam element based on a plastic damage model for prestressed concrete bridges", in B.H.V. Topping, J. Kruis, (Editors), "Proceedings of the Fourteenth International Conference on Computational Structures Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 3, Paper 12.1, 2022, doi:10.4203/ccc.3.12.1

Keywords: beam finite element, fiber section, damage, plasticity, regularization, prestressed concrete, cyclic analysis, nonlinear analysis.

Abstract

Damage modeling in prestressed concrete beams is a relevant issue in the assessment of existing structures, especially bridges. This work focuses on the formulation of a high-performance fiber beam element to model the nonlinear behavior of prestressed reinforced concrete beams and the progressive damaging phenomena. The proposed beam formulation relies on the force-based approach. A fiber discretization of the cross section is used to model concrete, steel reinforcements and prestressing cables through three-dimensional constitutive laws based on damage and plasticity for concrete, and plasticity for steel. The presence in the concrete constitutive law of strain-softening requires appropriate regularization procedures. One or more tendons are added to the fiber section as fibers where the applied prestressing is equivalent to an initial fiber strain. No additional discretization is required. This model is implemented in the OpenSees framework to carry out specific tests and demonstrate its potentialities.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 3 PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: B.H.V. Topping and J. Kruis Paper 12.1 A 3D fiber beam element based on a plastic damage model for prestressed concrete bridges L. Parente¹, D. Addessi¹ and E. Spacone² ¹Department of Structural and Geotechnical Engineering, Sapienza University of Rome, Italy ²Department of Engineering and Geology University G. D’Annunzio of Chieti-Pescara, Italy doi:10.4203/ccc.3.12.1 Full Bibliographic Reference for this paper L. Parente, D. Addessi, E. Spacone, "A 3D fiber beam element based on a plastic damage model for prestressed concrete bridges", in B.H.V. Topping, J. Kruis, (Editors), "Proceedings of the Fourteenth International Conference on Computational Structures Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 3, Paper 12.1, 2022, doi:10.4203/ccc.3.12.1 Keywords: beam finite element, fiber section, damage, plasticity, regularization, prestressed concrete, cyclic analysis, nonlinear analysis. Abstract Damage modeling in prestressed concrete beams is a relevant issue in the assessment of existing structures, especially bridges. This work focuses on the formulation of a high-performance fiber beam element to model the nonlinear behavior of prestressed reinforced concrete beams and the progressive damaging phenomena. The proposed beam formulation relies on the force-based approach. A fiber discretization of the cross section is used to model concrete, steel reinforcements and prestressing cables through three-dimensional constitutive laws based on damage and plasticity for concrete, and plasticity for steel. The presence in the concrete constitutive law of strain-softening requires appropriate regularization procedures. One or more tendons are added to the fiber section as fibers where the applied prestressing is equivalent to an initial fiber strain. No additional discretization is required. This model is implemented in the OpenSees framework to carry out specific tests and demonstrate its potentialities. download the full-text of this paper (PDF, 8 pages, 351 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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