A prefabricated pile grouting device

Abstract

The invention relates to a prefabricated pile grouting device, comprising a casing, a grouting box, a connecting piece, a grouting pipe and a grouting pipe. The grouting box is vertically fixed and suspended in the casing via the connecting piece, and the The middle part of the connecting piece has a fragile point that is easily broken under tension; one end of the grouting pipe is connected to the grouting box, and the other end extends through the upper wall of the casing to the outside of the casing; the vertical direction of the grouting box is The side wall is provided with a plurality of insertion holes, the grouting pipe is elastically inserted into the insertion holes, one end of the grouting pipe is located in the grouting box, and the other end elastically abuts against the side wall of the casing, and The side walls of the casing are provided with protruding holes located below the corresponding ends of the grouting pipes.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a prefabricated pile grouting device. Background technique [0002] The existing prefabricated pile grouting technology is described in the patent number "201310527345.8" and the patent name is "grouting prefabricated piles and grouting method": use a grouting pipe to inject a piece of concrete (should be cement slurry) into the foundation. . A piece of concrete is turned up along the outer wall of the prefabricated pile under the action of the grouting basin. When the pressure of the upturned concrete around the outer wall of the prefabricated pile reaches the set pressure value, the high-pressure grouting is completed, and the grouting pipe is pulled out. In practical application, in the process of lowering the pile, the outer wall of the prefabricated pile and the soil layer are squeezed to form a relatively dense soil layer. During the grouting process, the ceme...

AI Technical Summary

Problems solved by technology

In practical application, during the pile laying process, the outer wall of the prefabricated pile and the soil layer are squeezed to form a relatively dense soil layer. During the grouting process, the cement slurry will flow irregularly under the action of the grouting pressure, which will easily cause the grout to accumulate locally. , and there is no grout problem in other parts, so that the structural strength of the grout is insufficient after solidification

Images