A mechanics-based approach for modelling dowel cracking in RC beams

Conference Paper (2024)
Author(s)

J. Lu (TU Delft - Concrete Structures)

Yuguang Yang (TU Delft - Concrete Structures)

Max Hendriks (TU Delft - Engineering Structures, Norwegian University of Science and Technology (NTNU))

Research Group
Concrete Structures
More Info
expand_more
Publication Year
2024
Language
English
Research Group
Concrete Structures
Bibliographical Note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. @en
Pages (from-to)
1381-1389
ISBN (print)
9782940643257
Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Abstract

Dowel action is recognized as one of the major shear resistance mechanisms. Although the dowel action only contributes a relatively small portion of the total shear resistance, the shear failure of reinforced concrete members without shear reinforcement usually occurs accompanied by unstable dowel cracking. This paper presents a new description of the dowel splitting process and a mechanical model based on two theories, namely the Beam on Elastic Foundation (BEF) theory and fracture mechanics. The mechanical model analytically describes the three stages during the dowel splitting of the longitudinal rebar in an RC beam, which are the elastic stage, stable cracking stage and unstable cracking stage. The proposed model can capture the post-peak behaviour of the nature of dowel action. Finally, a simplified equation for engineering practices is proposed. The proposed expression shows promising agreement with the experimental data.

Files

Final_version-JL.pdf
(pdf | 0.761 Mb)
- Embargo expired in 13-05-2025
License info not available