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Single-hole composite anchoring pile

A technology for anchoring piles and bolts, used in sheet pile walls, buildings, infrastructure projects, etc., can solve the problems of stress concentration and inability to distribute loads evenly in ordinary anchoring piles, and achieve simple and economical construction machinery, high bearing capacity, and construction. The effect of low site conditions

Inactive Publication Date: 2007-11-14
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that ordinary anchorage piles are prone to stress concentration and cannot evenly distribute the load on the entire length of the pile body, and provide a method that can be separately loaded by different fixing sections so that the bonding stress is more evenly distributed on the entire pile body. In terms of the length of the body, the ground strength within the entire length of the composite anchor pile is used to the greatest extent, so as to reduce or eradicate the failure of pile side friction or partial failure of the single-hole composite anchor pile

Method used

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Effect test

Embodiment 1

[0015] In the single-hole composite anchor pile shown in the figure, 1 is the drill hole, 2 is the grouting pipe, 3 is the sleeve valve pipe, 4 is the anchor rod body, 5 is the grouting body, 6 is the sleeve valve pipe grout stopper, 7 For the sleeve valve pipe grouting hole, the 8th is the sleeve valve pipe flower pipe, and the 9th is a rubber sleeve. In the implementation process, the hole forming machine is first used to form a drill hole 1 with a diameter of 130mm and a depth of 12.5m, and insert the grouting pipe 2, the sleeve valve pipe 3 and the anchor body 4, the grouting pipe 2 and the sleeve valve pipe 3 The length is the same as the depth of the borehole 1, and each anchor body is installed with two secondary hot-rolled rebars with a diameter of 32mm, the lengths are 12m and 6m, and the lengths of the free sections are 7m and 0m respectively. First, use the grouting pipe 2 to carry out a grouting. The grouting material is ordinary silicon 32.5 grade cement, and the ...

Embodiment 2

[0017] In the implementation process, the hole forming machine is firstly used to form a drill hole 1 with a diameter of 150mm and a depth of 15m, inserting the grouting pipe 2, the sleeve valve pipe 3 and the anchor body 4, and the length of the grouting pipe 2 and the sleeve valve pipe 3 At the same depth as drilling hole 1, each bolt body is equipped with three secondary hot-rolled rebars with a diameter of 22mm, the lengths are 15m, 9m and 5m, and the lengths of the free sections are 8m, 5m and 0m respectively. First, use the grouting pipe 2 to carry out a grouting. The grouting material is ordinary silicon 32.5 grade cement, and the water-cement ratio of the slurry is 0.5:1. Pipe 3 implements secondary grouting, and the secondary high-pressure grouting is related to the undisturbed soil conditions, pile hole depth, position, and grouting sequence. According to the site conditions of a member store in this embodiment, the secondary medium-high pressure grouting pressure is ...

Embodiment 3

[0019] In the implementation process, the hole forming machine is firstly used to form a drill hole 1 with a diameter of 150mm and a depth of 16m. Insert the grouting pipe 2, the sleeve valve pipe 3 and the anchor rod body 4. The length of the grouting pipe 2 and the sleeve valve pipe 3 is At the same depth as drilling hole 1, each bolt body is equipped with three secondary hot-rolled rebars with a diameter of 25mm, the lengths are 11m, 8m and 5m, and the lengths of the free sections are 6m, 4m and 0m respectively. First, use the grouting pipe 2 to carry out a grouting. The grouting material is ordinary silicon 32.5 grade cement, and the water-cement ratio of the slurry is 0.5:1. Pipe 3 implements secondary grouting. The secondary high-pressure grouting is related to the undisturbed soil conditions, pile hole depth, position, and grouting sequence. According to the site conditions of a member store in this embodiment, the secondary high-pressure grouting pressure is designed to...

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Abstract

A single-hole compound anchor pile, belongs to the architectural engineering. Useig in the highway subgrade, the bridge ground, the building ground foundation reinforcement. Compound anchor pile including drill hole (1), thick liquid tube (2), sleeve valve tube (3), anchor rod body (4), note hydromass (5); And the sleeve valve tube (3) stops the thick liquid piston by the sleeve valve tube (6), the sleeve valve tube shoots the thick liquid hole (7), the sleeve valve tube floral tube (8), the rubber cup (9); In the implements process first to use the hole machinery to form the drill hole to the single-hole compound anchor pile designed depth, the insertion note thick liquid tube, the sleeve valve tube as well as the anchor rod body, pours the thick liquid tube and the sleeve valve tube length with the hole depth, implements thick liquid first using the note thick liquid tube, after size prehardening, implements two time mesohigh note thick liquid using the sleeve valve tube, two mesohigh note thick liquid pressure is 1-5MPa, pours the thick liquid current capacity is 10-60l / min. The merit is: The location condition requests lowly, machinery simple economy; The pile hole aperture is small, can arrange the battered pile conveniently, the effective resistance horizontal and the vertical load, the supporting capacity is high, is suitable for each kind of different soil texture.

Description

Technical field: [0001] The invention belongs to the field of construction engineering, and in particular relates to a single-hole composite anchor pile suitable for reinforcement of roadbeds, bridge foundations and building foundations. Background technique: [0002] With the expansion of capital construction scale, the number of civil works, especially high-level traffic projects, is increasing, and the construction difficulty is increasing, while the space for urban development is getting smaller and smaller, and structures have to be built on poor foundations, so the requirements for foundations are constantly increasing. Therefore, in the process of engineering construction, it is inevitable that a large number of natural foundations cannot meet the requirements of foundation bearing capacity or structural deformation. The pile-soil composite foundation has been widely used due to its simple process, convenient construction and low cost. Ordinary anchor piles install t...

Claims

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Application Information

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IPC IPC(8): E02D5/80E02D5/54E02D5/62
Inventor 高永涛吴顺川
Owner UNIV OF SCI & TECH BEIJING
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