Abstract:

The stability of underground structures of great height in soft clays in urban areas requires a study which takes into account all the parameters which influence its behavior. The study of the Oued Smar—Algiers station which is carried out in an urban area is numerically analyzed in 3D. This analysis takes into account the effect of the environment of the structure, the geotechnical parameters, as well as the effect of the different implementation phases. The results obtained in terms of stresses and pore pressures are studied. Inclinometers installed in the wall according to a fixed grid, whose measurements taken after each excavation are compared with the displacements obtained numerically. The calculated horizontal displacements are lower than those measured in situ.

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