ABSTRACT
Modified Cam-Clay model into the three-dimensional stress space using the Mohr-Coulomb failure criteria.
2 DESCRIPTION OF THE PROBLEM
The problem comprises a 24-m-deep circular excavation with diameter of 20 m (Fig. 1). The retaining structure consists of a 1.0-m-thick reinforced concrete wall with length of 45 m (21 m below the excavation base).The excavation is carried out in a total time of 36 days at a uniform rate. The ground comprises a superficial 4-m-deep sandy layer and a 57-m-thick soft clay overlying a “rigid stratum”. The water table is at the ground surface.
