Title:
Structural behavior of prestressed Ultra-High Performance Fibre-Reinforced Concrete beams with and without openings: comparison between experimental results and finite element modelling techniques
Author(s):
Redaelli, D.; Nseir, J.Y.
Publication:
Symposium Paper
Volume:
343
Issue:
Appears on pages(s):
474-483
Keywords:
Ultra-High Performance Concrete, Finite Elements, Prestressed Beams, Cellular Beams.
DOI:
Date:
10/1/2020
Abstract:
This paper presents the results of a numerical study carried out by the authors to better understand the structural behavior of prestressed beams with web openings and to identify
numerical modelling techniques that allow to adequately predict such behavior. Ultra-High Performance Fibre Reinforced Concrete (UHPC) beams are considered, with a focus on shear-controlled failure modes. For all the beams considered in this study, prestressing is used to resist the main bending moment. However, no other reinforcement is added to the beams, in order to emphasize the structural contribution of the fibers and to focus on solutions that could be economically competitive for the precast industry.
The results of non-linear simulations performed with existing finite elements codes are compared and validated against experimental results of tests carried out at the University of Applied Sciences of Western Switzerland. The main assumptions of the numerical
simulations are discussed, as well as the results and the limits of the analysis.
Related References:
L. Moreillon, J. Nseir, J. Tomás, R. Suter (2013), Structural Behaviour of Cellular Beams in UHPFRC, RILEM-fib-AFGC Int. Symposium on Ultra-High Performance Fibre- Reinforced Concrete UHPFRC 2013, October 1-3, 2013, Marseille, France
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AFGC (2013), Ultra-High Performance Fibre-Reinforced Concretes – Interim Recommandations, 2013
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