Title:
Use of a Probabilistic Explicit Cracking Model for Analysing the mechanical behaviour of an Ultra-High Performance Fibre Reinforced Concrete (UHPFRC) Beam Subjected to Shear Loading
Author(s):
Rossi, P.; Davian-Desnoyers, D.; Tailhan, J.L.
Publication:
Symposium Paper
Volume:
343
Issue:
Appears on pages(s):
484-493
Keywords:
Ultra-High Performance Fibre Reinforced Concrete; Numerical Model; Shear, Bending, Cracking
DOI:
Date:
10/1/2020
Abstract:
The objective of this paper is to verify the validity of the probabilistic explicit cracking model developed for SFRC to simulate the behaviour of a reinforced UHPFRC beam subjected to a bending load leading to shear failure. The relevancy of the model is evaluated
through the simulation of the mechanical behaviour of the beam. The parameters characterizing the tensile behaviour of the studied UHPFRC are determined from the 3-point bending tests performed on beams sawed from the reinforced UHPFRC beam. The results suggest that the probabilistic explicit cracking model is relevant to analyze the mechanical behaviour of a reinforced UHPFRC beam and provide precise information about the cracking process of this type of material. The good agreement between the experimental
result and the numerical simulations suggests that the studied UHPFRC behaves like usual FRC as the tensile strength and the mechanical effect of the fibres may be modelled by a perfectly brittle behaviour and a nonlinear softening behaviour.
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