Modélisation de poutres en béton armé endommagées par chargements cycliques : comportement en flexion et en cisaillement

Authors: Houde, Marie-Josée
Advisor: Bastien, JoséeJolin, Marc
Abstract: The objective of this research project is to develop a modeling tool (layer by layer) for the behavior of reinforced concrete members. For flexure, the model relies on the capacity to predict the behavior of a cracked section and also the behavior of the entire bent beam. Damage related to historic loading also applies, including permanent deformations and a diminished rigidity to the material. It is therefore possible to set up an alarm threshold by upgrading the reliability index of the structure which constitutes a complementary tool to telesurveillance or monitoring. An experimental program was setup to obtain results to validate the model with static and cyclic loading of instrumented beams. The comparison between the experimental results and the model predictions shows an excellent agreement for the static loading behavior, even though it is on the safe side of the performance index indicators. The phenomenon is nonetheless favourable for the proposed telesurveillance alarm threshold. Finally, the model can generate a rupture envelop including the interaction between the shear force and bending moment. The use of the modified compression field theory allows the follow-up of the crack inclination and the deformation in the stirrups at rupture. In summary, this prediction tool reveals to be a very useful one to simulate the behavior of reinforced concrete members subjected to shear and bending.
Document Type: Mémoire de maîtrise
Issue Date: 2007
Open Access Date: 12 April 2018
Grantor: Université Laval
Collection:Thèses et mémoires

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