Grouting prefabricated pile and grouting method

A prefabricated pile and grouting technology, which is applied in sheet pile walls, buildings, and foundation structure engineering, can solve problems such as increasing the amount of steel and concrete used, low density of concrete pipe piles, and reducing the resistance to scuffing and bending. To achieve the effect of increasing the bearing area, increasing the bearing strength and expanding the friction force

Active Publication Date: 2016-06-22
浙江兆弟技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent is actually a kind of grouting pile. Its disadvantages are as follows: firstly, the construction progress is slow, time-consuming and labor-intensive, and the cost of pile making is high; Pre-compressed stress, so a large amount of steel and concrete consumption is increased, and at the same time, the pile's anti-removal and bending resistance are greatly reduced. Third, the cast-in-place grouting pile can only use self-falling concrete, so the density of concrete is much lower than that of the pile. Concrete centrifugally formed prefabricated piles
Therefore, the compactness of the formed concrete pipe pile is low, and the bearing capacity is far lower than that of the strong prefabricated pile.

Method used

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  • Grouting prefabricated pile and grouting method
  • Grouting prefabricated pile and grouting method
  • Grouting prefabricated pile and grouting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: with reference to attached Figure 1-5 . A grouting prefabricated pile, comprising a prefabricated pile 1, a reinforcement cage 6 in the prefabricated pile 1 is vertically provided with more than one grouting pipe 4 erected, and a plurality of circumferential grouting pipes 2 are embedded in the prefabricated On the wall of the pile 1, a plurality of circumferential grouting pipes 2 communicate with the vertical grouting pipes 4 respectively, and a grouting hole 7 is circumferentially opened on the surface of the circumferential grouting pipes 2 . The plurality of circumferential grouting pipes 2 communicate with the vertical grouting pipes 4 through respective three-way valves 5 . The spray hole is in the shape of an outwardly expanded trumpet. The three-way valve 5 is a pressure spool three-way valve, or an electromagnetic three-way valve. The upper part of the vertical grouting pipe 4 is a telescopic structure 3 . The telescopic structure 3 is a coi...

Embodiment 2

[0015] Embodiment 2: on the basis of embodiment 1, a kind of manufacture method of grouting pipe pile, make reinforcement cage 6 according to conventional method, vertical grouting pipe 4 and reinforcement cage wall are fixed, a plurality of circumferential grouting pipes 2 Distributed in the form of bamboo joints from top to bottom on the periphery of the reinforcement cage 6, and a plurality of circumferential grouting pipes 2 are respectively connected to the vertical grouting pipes 4 through three-way valves 5, and then put into the pipe pile forming mold for centrifugal pile making .

Embodiment 3

[0016] Example 3: On the basis of Example 1, a grouting method for grouting pipe piles. When in use, put the grouting pipe piles into the piles buried in advance, and then put the high-pressure cement slurry through the vertical grouting At pipe 4, immediately after the high-pressure cement slurry is discharged from the lower end of the vertical grouting pipe, a part of the cement slurry is poured downward into the foundation, and a part of the cement slurry is turned up along the outer wall of the pipe pile. When the soil is mixed with a part of the cement slurry and the upward turning pressure reaches the set pressure value, the circumferential grouting pipe 2 on the prefabricated pile wall opens the valve core to the pile body sequentially according to the set pressure value from bottom to top. The surrounding space is subjected to high-pressure grouting step by step until the uppermost circumferential grouting pipe 2 of the prefabricated pile completes the high-pressure gro...

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Abstract

The invention relates to a method that can not only effectively expand the friction force between the pipe pile and the foundation soil without causing any damage to the pipe pile, improve the bearing capacity of the pipe pile, but also facilitate the completion of pile connection and anti-corrosion of the pipe pile. At the same time, realize the grouting pipe pile and the grouting method of pressurized grouting between the pipe pile and the foundation, including the pipe pile. The upper and lower rings are embedded on the wall of the pipe pile, and a plurality of ring-shaped grouting pipes communicate with the vertical grouting pipes respectively, and grouting holes are circumferentially opened on the surface of the ring-direction grouting pipes.

Description

technical field [0001] The invention relates to a method that can effectively expand the friction force between the prefabricated pile and the foundation soil without causing any damage to the prefabricated pile, improve the bearing capacity of the prefabricated pile, and can conveniently complete the pile connection and anti-corrosion of the prefabricated pile. At the same time, the invention relates to a grouting prefabricated pile and a grouting method for realizing pressurized grouting between the prefabricated pile and soil, and belongs to the manufacturing field of prefabricated piles and prefabricated pile foundation treatment grouting forming methods. Background technique [0002] CN101058979A, title "a kind of construction method of pullout and compression grouting pipe pile", is characterized in that the construction method of pullout and compression grouting pre-pile is realized through the following steps: 1. According to the design elevation and aperture of the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/30E02D5/50E02D5/62
Inventor 周兆弟
Owner 浙江兆弟技术有限公司
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