Experiments on the Hysteretic Response of Self-Centering RC Columns Prestressed by Unbonded Posttensioned Tendons

ABSTRACT

The prestressed column, where unbonded posttensioned tendons are arranged along the axis of the RC column, showed self-centering behavior after lateral loading. To investigate the detailed hysteretic response, nine prestressed RC columns with different axial loads and transverse reinforcement arrangements were tested and subjected to the combined action of cyclic horizontal loading and constant axial loading. The experimental results revealed the failure modes, and the drift capacity was analyzed using the ductility and plastic hinge zone length. The controlling effects on residual displacements varied over time during testing, and their mechanism was explained from the point of view of energy dissipation capacity.

KEYWORDS:

• Self-centering column
• unbonded posttensioned tendons
• hysteretic response
• drift capacity
• residual displacement

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

This work was supported by Scientific Research Fund of Institute of Engineering Mechanics, China Earthquake Administration [No.2019D20]; the National Natural Science Foundation of China [No.51778186].