Abstract

Nowadays, mat foundation is widely used in construction field. The classic method for calculating internal forces in mat foundation is based on the assumption that the stress-strain relationship of soil ground is linear elastic. Using the above method, the soil model is Winkler model. The advantage of this model is simple and the result is rather accurate compared with practice. However, behaviour of soil is not only elastic but also plastic. Therefore, this paper examines soil model, its behaviour concerns with plastic property and it is advanced compared with the original Winkler model (called Modified Winkler model). After that, this model will be applied to calculate internal forces in mat foundation.