Concrete variable cross-section prefabricated square pile

A concrete variable cross-section prefabricated pile, comprising a pile body with large-section segments and small-section segments alternately arranged in a longitudinal direction, wherein a top surface and a bottom surface of the pile body are flat, the large-section segments and the small-section segments are integrally formed, and a cross-section of each of the large-section segments and a cross section of each of the small-section segments are substantially rectangular;

• wherein a lateral transition surface is formed between a side surface of the large-section segment and a side surface of one of the small-section segments which is adjacent to the large-section segment;
• wherein at least a part of the lateral transition surfaces have front edges and/or rear edges, lateral projections of the front edges and/or rear edges are deviated from the vertical direction, and a vertical projection of an intersection line between the lateral transition surface and a first horizontal plane is located outside a vertical projection of an intersection line between the lateral transition surface and a second horizontal plane, wherein the second horizontal plane is lower than the first horizontal plane;
• wherein one or both side surfaces of the small-section segment are perpendicular to the bottom surface of the small-section segment or are inclined to the inside of the pile body from top to bottom at a set angle.