Modelling and parametric study of the re-anchorage of ruptured tendons in bonded post-tensioned concrete

Abdelatif, Amged O.; Owen, John S.; Hussein, Mohammed F.M.

Abstract

The contribution of ruptured tendons to the residual strength of bonded post-tensioned concrete structures is currently assessed based on pre-tensioned concrete bond models. However, this approach is inaccurate due to the inherent differences between pre-tensioned and post-tensioned concrete. In this paper, a non-linear 3D finite element model is developed for the re-anchoring of a ruptured tendon in post-tensioned concrete. The model is validated using full-field displacement measurement from 33 post-tensioned concrete prisms and previous experimental data on beams from the literature. The influence of different parameters was investigated, including tendon properties (i.e. diameter, roughness), duct properties (i.e. diameter, thickness, material), initial prestress, concrete strength, grout strength, grout voids, stirrups, and strands, on the tendon re-anchorage. The most influential parameters are found to be tendon and duct properties.

Citation

Abdelatif, A. O., Owen, J. S., & Hussein, M. F. (2017). Modelling and parametric study of the re-anchorage of ruptured tendons in bonded post-tensioned concrete. Journal of Structural Engineering, 143(12), Article 04017162. https://doi.org/10.1061/%28ASCE%29ST.1943-541X.0001898

• Journal Article Type: Article
• Acceptance Date: May 26, 2017
• Online Publication Date: Sep 23, 2017
• Publication Date: Dec 1, 2017
• Deposit Date: Jun 6, 2017
• Publicly Available Date: Sep 23, 2017
• Journal: Journal of Structural Engineering
• Print ISSN: 0733-9445
• Electronic ISSN: 1943-541X
• Publisher: American Society of Civil Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 143
• Issue: 12
• Article Number: 04017162
• DOI: https://doi.org/10.1061/%28ASCE%29ST.1943-541X.0001898
• Keywords: Post-tensioned concrete; Re-anchorage; Corrosion; Tendon; Bond, Modelling; Finite element; Rupture; ESPI
• Public URL: https://nottingham-repository.worktribe.com/output/964005
• Publisher URL: http://ascelibrary.org/doi/10.1061/%28ASCE%29ST.1943-541X.0001898
• Additional Information: © 2017 American Society of Civil Engineers
• Contract Date: Jun 6, 2017