Back-analysis of an embedded retaining wall with a stabilizing base slab

A series of finite element analyses has been carried out as part of an inve stigation into the long-term behaviour of an embedded retaining wall in Lon don Clay supported by a stabilizing base slab. Three different soil models were used: the Brick model, the Schofield model, and an elastic/Mohr-Coulom b plastic model. In the case of the Schofield and elastic/Mohr-Coulomb plas tic models, two different soil stiffness profiles were investigated. The wa ll movements calculated in the finite element analyses depended more on the soil stiffness than on the soil model. With the temporary prop in place, t he lateral stresses and wall bending moments calculated depended on both th e soil model and the soil stiffness; however, in the long term following pl acement of the stabilizing base slab, the calculated bending moments depend ed more on the soil model than on the stiffness. The calculated ground move ments depended on both the soil model and the soil stiffness.