Method for analyzing ultimate bearing capacity of shallow replacement soil soft foundation

The invention discloses a method for analyzing ultimate bearing capacity of a shallow replacement soil soft foundation, which comprises the following steps of: taking a horizontal plane AC of a foundation as an upper boundary of an active failure area, constructing a pentagon AA1BC1C with a vertical plane in mirror symmetry by a midpoint of the horizontal plane AC, defining the pentagon AA1BC1C as a range of the active failure area, and taking a point B as a bottom vertex of the active failure area, and setting the line segment AA1 and the horizontal plane AC to form an included angle alpha. The method has the beneficial effects that according to subitems of the ultimate bearing capacity of the shallow replacement soil soft foundation, the included angle between the boundary line of the active failure area and the foundation bottom plate serves as an adjustable value, and the ultimate bearing capacity of the foundation is improved to the maximum degree through soil replacement with the minimum size. 本发明公开了一种浅