Abstract：Based on the similarity theory and the engineering factors，the equations of similarity rule are deduced on the temperature and deformation of a linear frozen soil wall for protecting deep foundation pit. The simulation design and model tests are made to study the temperature and deformation of frozen soil wall. The results indicate that the temperature distribution of frozen soil wall is approximately linear. It is feasible to use foam plates to keep the low temperature of frozen soil wall. The deformation of frozen wall is composed of rotational，elastic and bigger creep deformations，and it nonlinearly increases with the ground pressure and nonlinearly decreases with wall thickness. There is a power function relationship between wall’s exposing time and the deformation. The design method for frozen soil wall is also discussed. The deformation constraint condition and the concept of effective thickness are put forward for frozen soil wall，and all the factors should be comprehensively considered for the determination of effective thickness of frozen soil wall，such as the temperature distribution，the stability against overturn，the deformation constraint condition and the strength condition of frozen wall for protecting deep foundation pit.
