High-pressure water injection humidifying compaction pile

Abstract

The invention discloses a high-pressure water injection humidifying compaction pile, and belongs to the technical field of foundation treatment. The compaction pile comprises a fixing block, a pile pipe, a cone head and a high-pressure water injection pipe, wherein the fixing block is arranged at the top of the pile pipe; the cone head comprises a cone head body and a cone tip, the front end of the cone head body is connected with the cone tip, and the root of the cone head body is connected with the bottom end of the pile pipe; a nozzle is arranged inside the cone tip; and one end of the high-pressure water injection pipe is connected to the outer side wall of the pile pipe, and the other end of the high-pressure water injection pipe penetrates through the bottom of the pile pipe and thecone head body and enters the cone tip to be connected with the nozzle. According to the high-pressure water injection humidifying compaction pile, the high-pressure water injection pipe and the nozzle are arranged on the compaction pile, so that synchronous high-pressure water injection can be realized during compaction for pore forming, and an effect of uniform humidification of the surface layer and the deep layer of a pile hole is achieved; and water resources are not wasted, and the construction period is reduced to a great extent.

Description

technical field [0001] The invention relates to the technical field of foundation treatment, in particular to a high-pressure water injection humidification type compaction pile. Background technique [0002] The compaction pile is a pile formed by pressing or driving a steel pipe with a pipe plug, valve or cone head into the underground compacted soil layer to form a hole, and then putting lime, sand and other fillers into the hole. The compaction pile composite foundation can effectively eliminate the collapsibility of large thickness loess in the treatment of collapsible loess foundation. However, when forming piles in loess with low water content, due to the hard soil, it is extremely difficult to form holes, it is difficult to reach the maximum dry density, and the compaction effect on the soil is not obvious. [0003] In the prior art, the pre-soaking method is adopted, and the water is often soaked unevenly from the surface layer to the deep layer, and the water cons...

AI Technical Summary

Problems solved by technology

However, when forming piles in loess with low water content, due to the hard soil, it is extremely difficult to form holes, it is difficult to reach the maximum dry density, and the compaction effect on the soil is not obvious

[0003] In the prior art, the pre-soaking method is adopted, and the water from the surface layer to the deep layer tends to be wetted unevenly, and the water consumption is large and the construction period is long, which will greatly extend the construction period

Images