« Ponts Connectés » IA2

Université Gustave Eiffel is participating in the work of the IA2 project, led by the company Sixense, as part of the "Connected Bridges" call coordinated by Cerema. This project aims to detect scour at bridge piers or structural damage using instrumentation based on a small number of sensors.

The IMSE laboratory notably organized the IA2 project plenary meeting on October 24, 2022. This event benefited from the participation of the university's vice-presidency for innovation, the management of the COSYS department, and the management of the COSYS/IMSE and MAST/EMGCU laboratories. In addition, the first-year PhD work of Solaine Hachem, supervised by Frédéric Bourquin, was awarded a thesis prize at the 2022 doctoral day organized by the COSYS department. It is also worth mentioning the recruitment in 2022 of Duc-Tam Vu for a 12-month postdoc.

As part of this project, the IMSE laboratory developed a reference numerical model (deliverable A0-5), which provides a configurable tool to create "instances" of bridges: the geometry, the number of spans, and various other parameters can be modified. The number of nodes or elements is therefore not a constant of the model. Moreover, the model is "dual" since it addresses the two targeted bridge families: there is thus a masonry bridge model and a composite bridge model. It allows for static, modal, and dynamic analysis. The target platform is Ubuntu-20.04 and the underlying finite element solver is CESAR, used via its Python interface (CESAR Pilot). This reference model was used in the postdoctoral work of B. Streichenberger to discuss the optimal placement of sensors on a masonry bridge, as the model easily enables sensitivity studies of the various model parameters.