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Abstract

This study explores the combination of timber and concrete as an economic and ecological solution alongside structural benefits for both floor and bridge systems. The purpose of this study is to investigate shear connectors using a finite element formulation, as they are crucial to achieve composite action. In this regard, a notched connection will be investigated to analyse its characteristics while providing a comprehensive breakdown of their shear behaviour and failure modes through push-out and bending tests. Using different material models in the software ABAQUS, the finite element model will be validated against the experimental data of a previous research followed by a parametric study on the impact of the notch length. To conclude the study, a bending test will be modelled with a finite element model and compared against theoretical result from the Eurocodes to confirm the validity of the model.

The results of this work showed that a combination of cohesive zone and concrete damage plasticity models exhibits the best similarity for the load-slip behaviour of the connection. However, the bending model proved to be inaccurate compared to the theoretical results as failure appears at an earlier stage than expected.

This research showed that finite element analysis is a tool that if used with precision can be used to model accurately the shear behaviour of notched connections. Further research on the shear behaviour implementation for concrete would further improve the accuracy of the finite element models, and extent it to short- or long-term investigation of shear connections.

Course: Civil Engineering - MEng - U0178178YC

Date Deposited: 2025-01-20

URI/permalink: https://library.port.ac.uk/dissert/dis14690.html