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Effect of thermal cycles on rock massif stability

Abstract : This Ph.D. thesis deals with the effect of atmospheric thermal cycles in rocks. Focused on the real case of La Roque Gageac, a small town located in France, which experiences rock fall risks related to the atmospheric thermal variations. An experimental study is performed, in order to isolate the effect of atmospheric thermal cycles in the La Roque Gageac limestone. Rock samples were submitted to thermal cycles. The damage induced in the samples is evaluated through different measurements. In order to reproduce the macroscopic mechanical response of the rock under the applied thermal cycles, a constitutive model based on the concept of composite material defined by Vaunat & Gens (2003) is developed. This constitutive model has been implemented in the finite elements code CODE_BRIGHT and validated with the experimental results.
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Submitted on : Wednesday, April 18, 2018 - 3:00:54 PM
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Claudia Juliana Villarraga Diaz. Effect of thermal cycles on rock massif stability. Earth Sciences. Universite Toulouse 3 Paul Sabatier (UT3 Paul Sabatier), 2018. English. ⟨tel-01769973⟩

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