Composite beams with indented construction joint – comparison of results of laboratory tests and numerical analysis
Grzegorz Sadowski
Grzegorz.Sadowski@pw.edu.plDivision of Mechanics of Structures and Building Materials; Faculty of Civil Engineering, Mechanics and Petrochemistry; Warsaw University of Technology; ul. Łukasiewicza 17, 09-400 Płock, Poland (Poland)
https://orcid.org/0000-0001-6441-0875
Piotr Wiliński
Division of Mechanics of Structures and Building Materials; Faculty of Civil Engineering, Mechanics and Petrochemistry; Warsaw University of Technology; ul. Łukasiewicza 17, 09-400 Płock; (Poland)
https://orcid.org/0000-0002-8599-5099
Anna Halicka
Department of Building Structures; Faculty of Civil Engineering and Architecture; Lublin University of Technology; 40 Nadbystrzycka Street; 20-618 Lublin; (Poland)
https://orcid.org/0000-0001-5526-8862
Abstract
The paper presents a comparative analysis of the behaviour of a composite beam, consisted of a precast element with indented surface and new concrete layer, subjected to 4-point bending. The results obtained from the virtual model of the beam created using the finite element method (Abaqus/CEA 2019 software) were compared with the laboratory test results obtained with use of the digital image correlation (DIC) method for identifying the crack pattern. The virtual model of composite beam was calibrated by the choice of interface parameters ensuring that the value of load resulting in delamination between concrete layers was close to that value obtained in the laboratory tests. The comparative analysis showed that the pattern of bending and shear cracks and the pattern of interface crack obtained with the finite element method reflect the laboratory test results properly. It can be assumed that the crack between concrete layers is related to the appearance and propagation of shear cracks. On the basis of FEM analysis it can be concluded that the phenomena identified as “shear friction” and “dowel action” are significantly activated after the interface cracking.
Keywords:
composite concrete beam, interface shear resistance, crack, digital image correlation (DIC), finite element method (FEM)References
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Authors
Grzegorz SadowskiGrzegorz.Sadowski@pw.edu.pl
Division of Mechanics of Structures and Building Materials; Faculty of Civil Engineering, Mechanics and Petrochemistry; Warsaw University of Technology; ul. Łukasiewicza 17, 09-400 Płock, Poland Poland
https://orcid.org/0000-0001-6441-0875
Authors
Piotr WilińskiDivision of Mechanics of Structures and Building Materials; Faculty of Civil Engineering, Mechanics and Petrochemistry; Warsaw University of Technology; ul. Łukasiewicza 17, 09-400 Płock; Poland
https://orcid.org/0000-0002-8599-5099
Authors
Anna HalickaDepartment of Building Structures; Faculty of Civil Engineering and Architecture; Lublin University of Technology; 40 Nadbystrzycka Street; 20-618 Lublin; Poland
https://orcid.org/0000-0001-5526-8862
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