Foundation reinforcement device and method

Abstract

The invention discloses a foundation reinforcement device and method. The foundation reinforcement device comprises a floral pipe (1) and a plurality of grouting discs (2). The floral pipe (1) is provided with a plurality of circles of grouting holes (5) with different layer heights and is further provided with locating holes with different layer heights. Each grouting disc (2) comprises a hollow disc body (7) and a plurality of grouting conduits (8). All the grouting conduits (8) are located on the side walls of the hollow disc bodies (7) correspondingly. Each hollow disc body (7) is provided with a locating assembly used for achieving locating with the corresponding locating holes in the floral pipe (1). The key of the reinforcement method lies in that after layer-by-layer filler filling and tamping, the grouting discs (2) are put in, during final grouting, slurry liquid enters the grouting discs (2) through the floral pipe (1) and then enters a soil body around an enlarging hole (22) through the grouting conduits (8) to form nodular concrete (24), and nodular concrete (24) of different pile bodies achieve mutual crosslinking. Through the foundation reinforcement device and method, the areas between piles can be reinforced effectively.

Description

technical field [0001] The invention relates to the field of soil foundation reinforcement treatment with collapsibility and excessive compression deformation, in particular to a foundation reinforcement device and a foundation reinforcement method. Background technique [0002] In loess and miscellaneous fill, silt, cohesive soil and other foundations, there are generally hazards of collapsibility and excessive compression deformation, and it is necessary to strengthen the foundation to improve its bearing capacity. The foundation reinforcement in the prior art mostly adopts the method of punching and expanding the foundation hole, that is, the foundation hole is drilled first, and then some filler is filled into the hole, and then the pillar hammer is repeatedly lifted and then dropped to expand the foundation hole by impact, and then expand the hole The middle-layer filling is further compacted by the column hammer, and then the column hammer punching and expansion pile i...

AI Technical Summary

Problems solved by technology

[0003] However, there is still a biggest defect in the way of foundation reinforcement in the prior art: that is, the influence range of the column hammer punching expansion pile on the compaction and reinforcement of the soil is small, only in the range of the pile body, and there is still a weak point between the piles. Unreinforced or reinforced areas with insufficient strength

Images