Numerical and Finite-Element Analysis of Short Ultrahigh-Performance Fiber-Reinforced Concrete Columns
Publication: Journal of Structural Engineering
Volume 145, Issue 10
Abstract
This paper describes the development of numerical and finite-element (FE) models for investigating the behaviors of short ultrahigh-performance fiber-reinforced concrete (UHPFRC) columns under concentric or eccentric loading conditions. A generic mechanic-based partial-interaction (PI) approach that is applicable to both flexural and axial members manufactured by conventional fiber-reinforced concrete has been suitably modified to analyze the structural response of the short UHPFRC columns. Moreover, FE modeling was also conducted to study the behaviors of UHPFRC members subjected to different loading conditions. Both models aim to generate load-axial deflection () or load-midheight deflection () relationships for concentrically or eccentrically loaded columns, as well as a load-midspan deflection () relationship for a beam subjected to three-point bending. Simulated results display an excellent agreement with test results, and the model can accurately predict the structural response of the UHPFRC columns. To aid in the development of a design guideline for the short UHPFRC columns, a load-moment () interaction envelope generated by the numerical model is proposed, and it shows a good correlation to the experimental results.
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Acknowledgments
The authors would like to extend their sincere gratitude to Dr. Phillip Visintin for his valuable advises on PI models used for this study. The authors would also like to extend their gratitude to Douglas, Fairweather, Jolly, Sedev, and Reid, who conducted the active-confined cylinder and direct pullout tests presented in this paper.
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Information
Published In
Journal of Structural Engineering
Volume 145 • Issue 10 • October 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Jul 10, 2018
Accepted: Feb 22, 2019
Published online: Aug 9, 2019
Published in print: Oct 1, 2019
Discussion open until: Jan 9, 2020
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