Full dynamic analyses of embedded cantilever structures. A comparison between numerical analyses and simplified approaches = Analyse dynamique complète des paroi cantilever. Une comparaison entre les analyses numériques et les approches simplifiées

The design of earth retaining structures under seismic conditions is a challenging geotechnical problem. Simplified pseudo-static approaches are often adopted but they do not take into consideration the real performance of the structure during earthquake conditions. Italian building code (NTC) does not deal all aspects involved in the design. This paper shows a numerical study with Plaxis 2D through full dynamic analyses to analyze the soil-structure interaction. Three seismic signals and three different stiffness of the structures were adopted to investigate the behavior of a cantilever wall. Results from these numerical analyses in terms of earth pressure, displacements and stresses on the structures were compared to those obtained by the pseudo-static approaches.