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High-pressure rotary spraying and core inserting process to form pedestal pile

A technology of high-pressure rotary spraying and bottom-expanding piles, which is applied to sheet pile walls, buildings, and foundation structure engineering, and can solve the problem of low ratio between bearing capacity and price

Inactive Publication Date: 2003-09-10
雷玉华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by factors such as mixing, pressure, and equipment limitations, the stiffness mixing pile has limitations in mixing depth and pile diameter. After mixing the upper soft soil, the improvement is small, and only part of the side friction can be increased. Therefore, the bearing capacity is not high compared to the price

Method used

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  • High-pressure rotary spraying and core inserting process to form pedestal pile
  • High-pressure rotary spraying and core inserting process to form pedestal pile
  • High-pressure rotary spraying and core inserting process to form pedestal pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] It consists of a core pile (1), a pile body (2) and a pile bottom (3). The core pile (1) is cylindrical, and the core pile (1) is a reinforced concrete prefabricated pile with a square cross section. The pile body (2) is arranged relatively parallel to the surface of the core pile (1), the pile body (2) wraps the core pile (1), the lower end of the core pile (1) is the pile bottom (3), and the diameter of the pile bottom (3) It is larger than the core pile (1), and the section of the pile body (2) is circular, such as figure 1 , figure 2 , Figure 6 , Figure 7 , Figure 8 , Figure 11 , Figure 12 , Figure 13 shown.

Embodiment 2

[0040] It consists of a core pile (1), a pile body (2) and a pile bottom (3). The core pile (1) is cylindrical, and the core pile (1) is a cast-in-place pile with a circular cross section. The pile body (2) is arranged relatively parallel to the surface of the core pile (1), the pile body (2) wraps the core pile (1), the lower end of the core pile (1) is the pile bottom (3), and the diameter of the pile bottom (3) It is larger than the core pile (1), and the section of the pile body (2) is fan-shaped, such as figure 1 , figure 2 , Figure 9 , Figure 11 , Figure 14 shown.

Embodiment 3

[0042] It consists of a core pile (1), a pile body (2) and a pile bottom (3). The core pile (1) is cylindrical, and the core pile (1) adopts a steel structure pile with an H-shaped section. The pile body (2) is arranged relatively parallel to the surface of the core pile (1), the pile body (2) wraps the core pile (1), the lower end of the core pile (1) is the pile bottom (3), and the diameter of the pile bottom (3) It is larger than the core pile (1), and the section of the pile body (2) is semicircular, such as figure 1 , figure 2 , Figure 8 , Figure 10 shown.

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Abstract

The present invention relates to high-pressure rotary spraying and core inserting process to form pedestal pipe. The pedestal pile consists of core pile, column and pile depestal. The cylindrical or turned frustum-shaped core pile may be prefabricated reinforced concrete pile, in-situ deposited pile or other pile in different cross section shapes. The pile pedestal below the core pile has diameter greater than that of the core pile. The column has circular, semi-circular of fan-shaped cross section. There may be several auxiliary core piles around the main solid or hollow core pile and several rings in relatively great diameter around the column. The present invention has reasonable design, compact structure, high friction resistance, and wide application in building engineering, bridge engineering, civil engineering, water engineering, etc.

Description

technical field [0001] The invention relates to a load-bearing pile for various foundations such as construction engineering, bridge engineering, municipal engineering, water conservancy engineering, etc., and particularly relates to a high-pressure rotary spraying core-expanding pile. Background technique [0002] At present, among the structural types of various foundation pile foundations used in construction engineering, bridge engineering, municipal engineering, water conservancy engineering and other projects, there are single structural piles and combined structural piles. Single structure piles include sinking pipe piles, bored piles, prefabricated square piles, pipe piles, mixing piles, CFG piles, etc.; combined structure piles include rammed expansion piles, stiff mixing piles, 3M piles, etc. Above-mentioned pile type has some weak points separately or jointly. For example, the performance-price ratio of single-structure piles is low, especially the defects of imm...

Claims

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Application Information

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IPC IPC(8): E02D5/44E02D5/50
Inventor 雷玉华
Owner 雷玉华
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