ABSTRACT
Bearing capacity for rigid deep foundations such as caissons under seismic loading are evaluated using the limit equilibrium technique. It is found that the bearing capacity depends on the earth pressures and the soil-shaft interface friction angles on the side of the foundation, particularly on the side of the passive resistance. The analysis includes the inertia of the involved soil mass and the structure induced in an earthquake. The solutions which shows stresses in the soil mass violating the failure criterion of the soil are rejected. The variation of the seismic accelerations within the depth of the foundation is not taken into consideration.
