Gravel grouting pile with extruding and expanding supporting discs and construction method thereof

Abstract

The invention discloses a gravel grouting pile with extruding and expanding supporting discs and a construction method thereof. The gravel grouting pile comprises supporting disc bodies, a grouting pipe, prefabricated holes, geotechnical cloth, gravel and a gravel slurry fixing pile body, the grouting pipe is arranged at the center position of the gravel slurry fixing pile body, the prefabricatedholes are annularly distributed on the pipe wall of the grouting pipe correspondingly, the geotechnical cloth wraps the outer parts of the prefabricated holes, the gravel wraps the upper part of the grouting pipe, the supporting disc bodies are located on the outer wall of the gravel slurry fixing pile body. The gravel grouting pile with the extruding and expanding supporting discs is formed by extruding and expanding through a special extruding and expanding device on the basis of a common gravel grouting pile, and still has the advantages of being free of noise and free of vibration during construction, the bearing disc diameter of an extruding and expanding supporting disc pile can reach about 2 times of the diameter of the pile body, the sum of the bearing area of each disc and each branch can reach several times of the main diameter section of the pile body, and compared with a straight rod pile, the vertical bearing capacity of the extruding and expanding supporting disc pile canbe increased by one time or even more than one time.

Description

technical field [0001] The invention relates to the technical field of pile foundation engineering, in particular to a gravel grouting pile with extruded and expanded support discs and a construction method thereof. Background technique [0002] The extruded and expanded branch pile technology is derived from the traditional cast-in-situ pile technology, but it is different from the traditional cast-in-place pile in that an extruded and expanded process is added. It is to add an extrusion and expansion process to the traditional cast-in-place pile technology, and use special equipment to set some branches or load-bearing plates along the pile body at different depths. Moreover, since the load-bearing plate is distributed on the pile body from top to bottom, a favorable bearing mode is formed for load bearing in layers, which effectively reduces the load and settlement on the bottom of the pile, making the pile have good stability As well as high bearing capacity, it has gre...

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Problems solved by technology

But in the long run, such a treatment method will occupy a large area of ​​land, and at the same time, the pollution to the environme

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