Abstract
The static soil-footing interaction changes with the applied load in bearing capacity problem. The interaction at the limit state is required as the boundary condition in bearing capacity analysis so that the rigidity of footing is, hitherto, idealized as perfectly flexible or rigid to simplify the problem. This study presents the ultimate bearing capacity of footing by taking account of the finite rigidity of footing and the change in soil-footing interaction. The lower bound theorem in shakedown analysis is employed to consider the interaction redistribution. The ultimate bearing capacities of footing against uniform and eccentric concentrated load applications are estimated and discussed in comparison with the reported experiments. The change in ultimate bearing capacity with the rigidity of footing is taken into consideration in view point of static soil-footing interaction.
