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A comprehensive study of prestressed UHPFRC I-beams under cyclic loading
https://orcid.org/0000-0003-1483-0526
https://orcid.org/0000-0003-4153-3455
Abstract This paper proposes the use of the parametric Krahl–Birtel–Mark constitutive law in Concrete Damage Plasticity (CDP) model, to represent the cyclic behavior of real scale Ultra-high-performance fiber reinforced concrete (UHPFRC) I-beams, with passive and active reinforcements. The accuracy of this constitutive law was evaluated from a numerical validation of five real-scale I-beams tested in three-point bending test under cyclic loads. The effects of prestress levels, load application positions (center and 1/3 beam span) were evaluated and key factors as cracking force, yielding force, peak strength, and post-peak responses were identified for each configuration. The comparison between the experimental and proposed numerical model showed 4% model error compared to the experimented beams. To assess damage in the real scale I-beams, non-destructive tests were performed using the dynamic impact resonance method after each load cycle. The findings of these tests were closely aligned with data from the numerical model in terms of damage evolution and residual displacements. An additional parametric numerical analysis with varying prestress levels (P 0 MPa, 600 MPa, and 1000 MPa) was performed to expand the study and assess the cyclic mechanical response with higher levels prestress response. The Krahl–Birtel–Mark constitutive law proved effective for designing and evaluating UHPFRC structures under to cyclic mechanical loads, and can be beneficial for other numerical studies focusing on the damage and plasticity of UHPFRC.
Highlights Numerical-experimental analysis of prestressed I-beams in static and cyclic tests. Accurate numerical model of concrete damage plasticity. Compressive and tensile constitutive model based on the Birtel-Mark-Krahl law. Damage identification through dynamic impact testing.
A comprehensive study of prestressed UHPFRC I-beams under cyclic loading
https://orcid.org/0000-0003-1483-0526
https://orcid.org/0000-0003-4153-3455
Abstract This paper proposes the use of the parametric Krahl–Birtel–Mark constitutive law in Concrete Damage Plasticity (CDP) model, to represent the cyclic behavior of real scale Ultra-high-performance fiber reinforced concrete (UHPFRC) I-beams, with passive and active reinforcements. The accuracy of this constitutive law was evaluated from a numerical validation of five real-scale I-beams tested in three-point bending test under cyclic loads. The effects of prestress levels, load application positions (center and 1/3 beam span) were evaluated and key factors as cracking force, yielding force, peak strength, and post-peak responses were identified for each configuration. The comparison between the experimental and proposed numerical model showed 4% model error compared to the experimented beams. To assess damage in the real scale I-beams, non-destructive tests were performed using the dynamic impact resonance method after each load cycle. The findings of these tests were closely aligned with data from the numerical model in terms of damage evolution and residual displacements. An additional parametric numerical analysis with varying prestress levels (P 0 MPa, 600 MPa, and 1000 MPa) was performed to expand the study and assess the cyclic mechanical response with higher levels prestress response. The Krahl–Birtel–Mark constitutive law proved effective for designing and evaluating UHPFRC structures under to cyclic mechanical loads, and can be beneficial for other numerical studies focusing on the damage and plasticity of UHPFRC.
Highlights Numerical-experimental analysis of prestressed I-beams in static and cyclic tests. Accurate numerical model of concrete damage plasticity. Compressive and tensile constitutive model based on the Birtel-Mark-Krahl law. Damage identification through dynamic impact testing.
A comprehensive study of prestressed UHPFRC I-beams under cyclic loading
https://orcid.org/0000-0003-1483-0526
https://orcid.org/0000-0003-4153-3455
Abstract This paper proposes the use of the parametric Krahl–Birtel–Mark constitutive law in Concrete Damage Plasticity (CDP) model, to represent the cyclic behavior of real scale Ultra-high-performance fiber reinforced concrete (UHPFRC) I-beams, with passive and active reinforcements. The accuracy of this constitutive law was evaluated from a numerical validation of five real-scale I-beams tested in three-point bending test under cyclic loads. The effects of prestress levels, load application positions (center and 1/3 beam span) were evaluated and key factors as cracking force, yielding force, peak strength, and post-peak responses were identified for each configuration. The comparison between the experimental and proposed numerical model showed 4% model error compared to the experimented beams. To assess damage in the real scale I-beams, non-destructive tests were performed using the dynamic impact resonance method after each load cycle. The findings of these tests were closely aligned with data from the numerical model in terms of damage evolution and residual displacements. An additional parametric numerical analysis with varying prestress levels (P 0 MPa, 600 MPa, and 1000 MPa) was performed to expand the study and assess the cyclic mechanical response with higher levels prestress response. The Krahl–Birtel–Mark constitutive law proved effective for designing and evaluating UHPFRC structures under to cyclic mechanical loads, and can be beneficial for other numerical studies focusing on the damage and plasticity of UHPFRC.
Highlights Numerical-experimental analysis of prestressed I-beams in static and cyclic tests. Accurate numerical model of concrete damage plasticity. Compressive and tensile constitutive model based on the Birtel-Mark-Krahl law. Damage identification through dynamic impact testing.
A comprehensive study of prestressed UHPFRC I-beams under cyclic loading
Gidrão, Gustavo de Miranda Saleme (Autor:in) / Krahl, Pablo Augusto (Autor:in) / de Oliveira Martins, Diego (Autor:in) / de Moraes, Francisco Roza (Autor:in) / Bosse, Rúbia Mara (Autor:in) / Carrazedo, Ricardo (Autor:in)
Engineering Structures ; 304
29.01.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
A comprehensive study of prestressed UHPFRC I-beams under cyclic loading
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