Calculation Method for Bearing Capacity of Foundation Soil Based on Potential Slip Line Theory

To solve the bearing capacity of foundation soil problem, through theoretical analysis and proof, a new method used to calculate bearing capacity of foundation soil is proposed, and the solving potential sliding curve and corresponding analytical program is devised. A continuous stress field of foundation soil is gained, by using the analysis of elastic-plastic finite element analysis of foundation soil for differ load; the numerical integration is used to make sure of the potential sliding curve, the most dangerous potential sliding surface, and the stability factor. The method has a rigor basis. Through many examples and engineering tests, the proposed method has good comparability with other method, and it can take into account many influence factors, such as the width and embedded depth of foundation, soil gravity, layered soil and etc, and it can also trace the trend of soil failure development and make clear the failure mechanism of foundation soil.