Research of Weightless Subsoil Bearing Capacity under Stripe Shallow Foundation

In order to study the influence of stiffness on the mechanism of failure and ultimate bearing capacity of weightless and homogeneous subsoil.Mohr-Coulomb inscribed circle yield criterion and associated flow rule are adopted.The overall process of subsoil from elasticity to plasticity gradually is modeled by elastoplastic FEM through load increment method.Computed results of three sort of foundation mentioned above are compared and integrated with some important results of model test,some significant conclusions can be obtained.The relativly accurate subsoil bearing capacity of stripe shallow foundation can be calculated by adopting Mohr-Coulomb inscribed circle yield criterion and associated flow rule.The difference of N c between flexible foundation model and rigid foundation model increases with the angle of frictional resistance accretion.Both the location and the character of the first crack are qiute different.