Numerical Bearing Capacity Prediction of Unsaturated Soils by the Method of Stress Characteristics

Bearing capacity is often calculated for saturated state of the soil, due to its simple and conservative results. However, this assumption results in very uneconomic design for a wide range of climates. In this paper, the bearing capacity of unsaturated soils is studied numerically and then compared with experimental results obtained from different authors. A generalized method of stress characteristics based on Bishop (1959) effective stress concept and Mohr-Coulomb yield criterion is presented and solved numerically. It is revealed that the method of stress haracteristics can be generalized for unsaturated soils.

کلیدواژه ها:

Bearing Capacity ، Foundation ، Effective Stress ، Unsaturated Soil ، Stress Characteristics.