Based on deeply analyzing the closure effect and stress dispersion of crust,a critical edge pressure formula of soft clay foundation considering the two effects is derived.

Based on the elastic-plastic theory, the critical edge pressure and critical loading of subsoil have been analyzed and stUdied with realistic coefficient of earth pressure at rest (K0≠ 1 )in this paper.

Formula of critical edge load of strip foundation under complex stress state;

The calculation method of the critical edge load and the critical load of composite foundations reinforced by stone columns is provided by the application of Mohr-Coulomb\'s failure criterion to soil between stone columns.

Based on Lade-Duncan failure criterion,calculating methods of cohesion and internal frictional angle of soil mass under plane strain state are given firstly,and critical edge load,critical load and ultimate load of shallow foundations are further studied in detail by using the cohesion and internal frictional angle.

A few viewpoints about bearing capacity of foundation;

Study of bearing capacity of foundations considering both effects of intermediate principal stress and three-dimensional stress state;

A reliability analysis on bearing capacity of foundation of Qiaodong district of Shijiazhuang city;

Evaluation of foundation bearing capacity of highway engineering in collapsible loess regions;

Study on the construction site classification and its application of the foundation bearing capacity;

Calculation method of foundation bearing capacity based on division in loess area for highway engineering;