Soutenance de thèse de Mouhammed Achhab

The design of reinforced concrete railway bridges is strongly influenced by uncertainties and constraints related to engineering decisions, site conditions, and project evolution. These factors can significantly affect structural performance, yet they are not explicitly represented in conventional deterministic design approaches based on successive finite element analyses. This thesis proposes a forward design approach that integrates surrogate models with finite element simulations to efficiently explore a wide range of design scenarios under such uncertainties. A key contribution is the introduction of design uncertainties reflecting engineering choices, while implicitly accounting for aleatory uncertainties through Eurocode safety factors. The approach enables fast characterization of structural behavior and identification of configurations satisfying serviceability criteria, supporting a transition from a verification-based process toward a more exploration- and decision-oriented design methodology.

 

Composition du jury :

• Franziska Schmidt, ingénieure de recherche, Université Gustave Eiffel, examinatrice
• Luc Davenne, professeur des universités, Université Paris Nanterre (LEME), Rapporteur & Examinateur  
• Julien Baroth, professeur des universités, Université Grenoble Alpes (3SR), Rapporteur & Examinateur
• Frédéric Duprat, professeur des universités, INSA Toulouse (LMDC), Examinateur
• Cédric Giry, professeur EPF Engineering School / Université Paris-Saclay, Examinateur