Grouting pile head breaking and removing method

Abstract

The invention relates to grouting piles, in particular to pile heads of the grouting piles. A grouting pile head breaking and removing method includes the steps that when a grouting pile steel reinforcement cage is machined, each steel reinforcement of the top of the cage is sleeved with a plastic pipe, the length of each plastic pipe is designed from the designed pile top position to the top of the steel reinforcement cage, and the diameter of each plastic pipe is larger than that of the corresponding steel reinforcement; the pipe bottoms of the plastic pipes are tightened with adhesive tapeand iron wires, isolation powder fills in the plastic pipes, after the plastic pipes are full of the isolation powder, the pipe tops of the plastic pipes are sealed, and sealed pipe openings of the plastic pipes are tightened with iron wires; after construction of the grouting piles is finished, during breaking and removing of the pile heads of the concrete grouting piles, four separation holes are drilled at equal intervals around the piles at the designed pile top elevation, and the diameters of the holes are slightly smaller than the diameter of an air pick drill bit; symmetrical impact isperformed in the four separation holes through an air pick, and the concrete pile heads are directly cut off in the positions; and holes are symmetrically drilled in the positions one third away fromthe upper ends of the pile heads, two steel reinforcement hanging rings are mounted, the cut-off pile heads are hung away with machinery, and breaking and removing work of the pile heads is finished.By means of the grouting pile head breaking and removing method, the difficulty and intensity of the pile head breaking and removing are reduced.

Description

technical field [0001] The invention relates to cast-in-situ piles, in particular to pile heads of cast-in-place piles. Background technique [0002] In construction engineering, the pile head of the concrete pouring pile will exceed the design pile top elevation by at least 500mm during the actual pouring of concrete. This part is used as the height of the pile. elevation. The usual practice is to dig out the pile top to the design elevation after the construction of the cast-in-situ pile, mark the position of the designed pile top, and then use a pneumatic pick to chisel out the steel bars of the cast-in-situ pile along the marked circle until all the piles wrapped in the pile head are covered. Until the steel bars in the concrete are chiseled out, since there is no steel bar in the remaining middle part of the concrete, the pneumatic pick can be driven directly from the level of the design pile top level, and the concrete pile head will be interrupted from this position,...

AI Technical Summary

Problems solved by technology

[0003] It can be seen that the removal of the pile head of the cast-in-situ pile is relatively cumbersome, and the pile head will be broken after all the piles are constructed. Chiseling causes a large workload