Corroded post-tensioned beams with bonded tendons and wire failure

• Published in: Engineering structures Vol. 31; no. 8; pp. 1687 - 1697
• Main Authors: Coronelli, Dario, Castel, Arnaud, Vu, Ngoc Anh, François, Raoul
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.08.2009; Elsevier
• Subjects: Applied sciences; Bonded tendons; Building structure; Buildings. Public works; Civil Engineering; Construction (buildings and works); Corrosion; Durability. Pathology. Repairing. Maintenance; Engineering Sciences; Exact sciences and technology; Finite elements; Post- tensioning; Prestressed concrete; Prestressed concrete structure; Testing; Finite elements; Post- tensioning; Prestressed concrete; Bonded tendons; Corrosion; Testing; Stress analysis; Construction; Steel; Experimental study; Modeling; Posttensioning; Finite element method; Experimental result
• ISSN: 0141-0296; 1873-7323
• DOI: 10.1016/j.engstruct.2009.02.043

The structural response of post-tensioned beams with bonded wires has been studied experimentally, and a numerical model is proposed. The tests simulated the effect of stress corrosion failure and development of anchorage of the wires on each side of the fracture. The residual structural performance for loading up to failure was also measured. The nonlinear finite element model with interface elements reproduces the different phases of prestressing wire breaking with rebonding and loading of the beam, taking into account local and global parameters. The distribution of damage caused by wire breaking has been assumed to occur in different locations and different failure modes were studied. Conclusions are drawn for the performance of deteriorating prestressed structures.