Within Grand Paris Express, one of the issues of the extension of underground public transport lines is to evaluate the effect of tunnelling on existing foundations. No recommendations are available to propose static and dynamic reliable numerical calculation. In the case of boring machine and its impact on deep foundations, their response depends on the transverse and lateral distance between pile tip and tunnel head. Moreover, being a three dimensional process, boring representation in a transversal plane section requires phase construction in order to take into account boring machine advancement and action, making numerical modelling complex. The research project aims at making calculation of deformation due to tunnelling reliable. It would propose a procedure relying on some parameters (that can be obtained from reliable tests) and rheological models with already known validity limits. Project partners complementarity will allow to produce operational softwares to enforce this procedure. The project is organised around four main Work Packages (WP) that are detailed.