Implementation of interface damage model with friction to concrete-FRP shear connector
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https://orcid.org/0000-0003-0770-0504
Roman Vodička
Technical University of Košice, Slovakia
https://orcid.org/0000-0002-7702-3126
Daniel Dubecký
Technical University of Košice, Slovakia
Michala Weissová
Technical University of Košice, Slovakia
https://orcid.org/0000-0001-8894-9234
Abstract
The study investigates the application of fibre-reinforced polymer (FRP) composites in constructions of bridges. It highlights the main advantages of using FRP as a building material and points out its suitability for various structural applications. A numerical analysis was performed on different shape modifications of a jigsaw-puzzle type continuous shear connector. For the interface between concrete and FRP, a bilinear cohesive zone model with friction within a variationally based formulation of interface damage has been chosen and tested. This model captures the load displacement relation accounting for a softening region and offering a continuous response of key variables of stress and damage. Findings illustrate reliability of the cohesive bilinear model as a tool for predicting failure and show a promise for applying it in material design, or in design of FRP composite structures, their members and specifications of their construction details.
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