Development of Finite Element Analysis for Intermediate Length Coupling Beams Considering Bond‑Slip Interface

Finite element analysis is performed on four reinforced concrete coupling beams of intermediate length using 2-D plane stress elements, under monotonic load up to failure. The model is verified using the results from (Nabilah and Koh in KSCE J Civil Eng 21:2807–2813, 2017). The bond-slip interface f...

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Bibliographic Details
Published in:International journal of concrete structures and materials 2020, 14(5), 56, pp.767-776
Main Authors: Nabilah, Abu Bakar, Koh, Chan Ghee, Izian, Abd. Karim, Abd. Aziz, Farah Nora Aznieta
Format: Article
Language:English
Subjects:
Beams (structural)
bond-slip relation
Bonds
Building Materials
Coupling
coupling beam
Engineering
Finite element analysis
Finite element method
Flexing
Plane stress
Reinforced concrete
Shear deformation
Slip
Solid Mechanics
Stiffness
Structural Materials
Two dimensional models
토목공학
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Summary:Finite element analysis is performed on four reinforced concrete coupling beams of intermediate length using 2-D plane stress elements, under monotonic load up to failure. The model is verified using the results from (Nabilah and Koh in KSCE J Civil Eng 21:2807–2813, 2017). The bond-slip interface for the longitudinal reinforcement is modeled in the finite element, as it is found that it better predicts the load-deformation behavior compared to perfect bond. The comparison between finite element analysis and the experiment found that the model is able to predict the overall behavior of the structure, especially the maximum load capacity. The maximum deformation and the shear deformation from the finite element analysis are found to be underestimated, due to the inability of the model to predict shear deformation accurately. Flexural deformation (due to flexure and slip) is found to be well predicted, as the bond-slip behavior is modeled in the analysis. Generally, the shear deformation and slip are found to be significant in the intermediate length coupling beam and should not be ignored in the analysis. Finally, the effective stiffness prediction using finite element analysis is found to be overestimated and should be determined instead using existing equations.
ISSN:1976-0485
2234-1315
DOI:10.1186/s40069-020-00409-w