A Construction Method for Filling Wall Foundation with Deep Backfilling Soil

Abstract

The invention belongs to the technical field of building construction, and specifically relates to a construction method for filling a wall foundation with deep backfill soil. The auger drilling machine used in the construction method includes a body, a rotating column and an auger bit; the top of the body is provided with a The movement arm; the end of the movement arm is rotatably connected with a rotation column; the bottom surface of the rotation column is fixedly connected with a hydraulic cylinder; the bottom surface of the hydraulic cylinder is fixedly connected with a connecting column; the bottom surface of the connecting column is fixedly connected with a screw Drill bit; the auger bit includes a core column and a helical blade; the surface of the helical blade is provided with uniformly arranged rotating grooves; the internal rotation of the rotating groove is connected with a baffle plate; the present invention effectively improves the carrying capacity of the auger bit The ability of soil and rock avoids a large amount of soil and rock falling when the auger bit is exported to the pile hole, which reduces the drilling efficiency and affects the introduction of the steel pipe pile into the pile hole in the later stage, so as to improve the pile hole drilling capacity of the auger drill.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a construction method for filling a wall foundation with deep backfill soil. Background technique [0002] According to the formation and the soil rejection of the drill bit, it is divided into single-head single-screw, double-head single-screw, and double-head double-screw. The diameter of the drill hole is Ф400-1200mm. [0003] According to CN110924404A, a deep backfill soil filling wall foundation construction method, the deep backfill soil filling wall foundation construction method avoids pipeline deformation and filling wall cracking caused by backfill settlement. [0004] But in the prior art, after completing a drilling, it is necessary to export the auger bit. When the auger bit is exported, it can take out the earth and rocks, and then rotate or vibrate the auger bit outside the pile hole to make the earth and rock fall. Because the helical bl...

AI Technical Summary

Problems solved by technology

[0004] But in the prior art, after completing a drilling, it is necessary to export the auger bit. When the auger bit is exported, it can take out the earth and rocks, and then rotate or vibrate the auger bit outside the pile hole to make the earth and rock fall. Because the helical blade structure of the auger bit is helical, soil and rocks can easily slip off the surface of the helical blade, and a large amount of crushed soil and rocks inside the pile hole remain and cannot be effectively exported, which affects the introduction of steel pipe piles in the later stage. During the process, the soil and rocks on the side wall of the pile hole will also continue to fall due to the collision of the auger bit, and the side wall of the pile hole is not fully squeezed, which is prone to problems such as adduction or collapse of the pile hole

Images