Fecha de publicación: 30/09/2022 Fuente: WIPO Meat The invention relates to the technical field of foundation pit supporting, and discloses a joint box structure for forming a foundation pit supporting occlusion plain pile, which is inserted into a plain pile hole and comprises a plurality of standard knots and a bottom knot, the plurality of standard knots are sequentially butted up and down to form a standard section, and the top of the bottom knot is butted with the bottom of the standard section; the area, filled in a plain pile hole, of the connector box structure is consistent with an occlusive area of an occlusive pile, female connectors are arranged at the tops of the standard knots and the top of the bottom knot respectively, male connectors are arranged at the bottoms of the standard knots, and the male connectors of the adjacent standard knots are inserted into the female connectors to achieve butt joint. The female joint of the bottom section is butted with the male joint of the adjacent standard section; by means of the connector box structure, the formed plain pile has a vacant occlusion area, in the meat pile forming process, hard cutting of concrete is not needed, the connector box structure comprises a bottom section and a plurality of standard sections, the adjacent standard sections are in butt joint through male joints and female joints, operation is convenient, and corresponding butt joint can be achieved according to the actual depth.