Abstract: The squeezing soft clay (with stone) method is widely used in soft soil treatment for structures or dike foundations, in which the water content is high and shear strength is low. The construction technology of the squeezing soft clay (with stone) method is easy to carry out and the economic benefit is obvious. The stones penetrate into the soil foundation by squeezing out soft soil until the weight can balance the bearing capacity of foundation soil. The study of section morphology and depth of the dike by the squeezing soft clay (with stone) method is very important in design stage. In this paper both the inverse trapezoid section and rectangle section morphologies are assumed and the effect of the soil upheavals is considered. Then the calculation formulas of penetration depths of the bulk consisting of crushed stones are deduced by the limit equilibrium concept, in which the weight of crushed stone bulk and the bearing capacity of the soil foundation are balanced. The accuracy and applicability of the formulas are verified by model test results and the observed data from practical construction projects. It turns out that the model test and observed data are consistent with the calculation results of formulas very well. The study results can provide reference for designing the squeezing silt.

Key words: squeezing soft clay (with stone) method, section morphology, integral sliding failure, model test