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Construction method for large bearing capacity pile and pile foundation and inner hole deposition device

A construction method and technology of bearing capacity, which is applied in foundation structure engineering, sheet pile walls, buildings, etc., can solve the problems of high pile foundation cost and low pile bearing capacity

Inactive Publication Date: 2008-06-04
吕怀民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a construction method for large bearing capacity piles and pile foundations and in-hole sinking equipment in order to overcome the shortcomings of low pile bearing capacity and high pile foundation cost

Method used

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  • Construction method for large bearing capacity pile and pile foundation and inner hole deposition device
  • Construction method for large bearing capacity pile and pile foundation and inner hole deposition device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0154] Example 1. It can be seen from Fig. 1 and Fig. 3 that this embodiment 1 is a concrete hollow pile with a large bearing capacity and an anti-softening section.

[0155] product features. It comprises hollow pile body (1), pile core (12), pile point (9) (not drawing), is characterized in that: also comprises anti-softening section, and anti-softening section is hollow pile section (4), and hollow pile section (4) and the hollow pile body (1) are the same joint and body. The hollow pile section (4) is arranged at the lower end of the hollow pile; the length of the hollow pile section (4) is not less than the length of the pile body entering the bearing layer; the optimum length of the hollow pile section (4) is between 1-4 meters. The hollow pile section (4) includes a layer of sealing layer (13), and the sealing layer (13) is arranged on the inner wall position of the hollow pile body (1), or is arranged on the inner wall and the end face position; the most sealing laye...

Embodiment 2

[0157] Example 2. It can be seen from Fig. 2 and Fig. 3 that the present embodiment 2 is also a concrete hollow pile with a large bearing capacity with an anti-softening section.

[0158] product features. The hollow pile section (4) serving as the anti-softening section is an independent body; the concrete hollow pile is formed by connecting one section of the independent body hollow pile section (4) and another section or several sections of the concrete hollow pile body (1).

[0159] Construction method characteristics. The concrete hollow pile adopts A-prefabrication process, B-assembly process, and P-connection process. The semi-finished products (segmentation and fragmentation) are manufactured in the factory, and different piles and components are connected and assembled at the construction site, and then sinking into the underground rock and soil layer. The connection method adopts one or more of welding and mechanical connection. The sealing layer (13) of the holl...

Embodiment 3

[0161] Example 3. As can be seen from Fig. 4 and Fig. 6, the present embodiment 3 is a concrete hollow pile with a large bearing capacity of a core-filled pile section (6) with the same joint and body.

[0162] product features. The anti-softening section is the core-filled pile section (6). It includes a hollow pile body (1) and a pile core (12), and is characterized in that: the core-filling pile section (6) is arranged at the lower end of the hollow pile; the length of the core-filling pile section (6) is not less than the pile body entering the holding The length of the force layer; the optimal length of the core-filling pile section (6) is between 1-4 meters; the core-filling pile section (6) is the same section and body as the concrete hollow pile body (1). The pile is composed of a hollow pile body (1) and a filling body (11) filled in the pile core (12). The filling body (11) includes a rigid waterproof material, and the rigid waterproof material is made of a liquid ...

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Abstract

The invention belongs to the pile foundation field of civil engineering and the pile driving machinery field of the mechanical engineering. A hoop with great bearing capacity is provided with a soften-proof section and a thin wall sleeve (10); the construction method of the pile foundation is as follows: the pile is provided with a soften-proof section and a thin wall sleeve (10) and the measures of a device sinking a pile element or the lower end of a protective pipe or sinking a pressure bearing pole are adopted; a sinking device inside a hole has a hammer block suspender mechanism (19) consisting of a hydraulic pile pressing device, a pressure bearing pole device and a pile hammer striking device, a hydraulic hammer lifting mechanism of the pile hammer striking device, a hammer block elevation outside convex body mechanism (18) of the pile hammer striking device and a hollow hammer block mechanism of the pile hammer striking device. The invention has the advantages that: 1. the soften-proof section can avoid the humidification soften accident by the inundation of the supporting course; 2. because the thin wall sleeve (10) is arranged and the measure of using the sinking device inside the hole to sink the lower end is adopted, the tip of pile can be piled into the deep layer of a mantle of rock as the supporting course; 3. the cost of the pile foundation is greatly lowered; 4. the energy of the sinking device inside the hole piling into the deep layer of the mantle of rock is great, the structure is simple, the deadweight is reduced and the cost is low.

Description

technical field [0001] The invention relates to a large bearing capacity pile and a construction method of a pile foundation and an in-hole sinking device, belonging to the field of pile foundations in civil engineering and the field of pile machinery in mechanical engineering. Background technique [0002] In the existing concrete pile foundation, there are two problems of relatively small bearing capacity of a single pile and high cost of the pile foundation. [0003] There are three reasons for the relatively small bearing capacity of single piles: [0004] First, the seepage of cracks in the pile body softens the bearing layer (especially the prefabricated hollow pile), resulting in a reduction in the bearing capacity of the pile end. First of all because the concrete pile body inevitably produces a large amount of cracks in the process of manufacture and construction (mainly including: 1, the separation crack between the surface of the pipe pile end (14) plate and the ...

Claims

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Application Information

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IPC IPC(8): E02D5/22E02D7/00E02D5/50
Inventor 黄强刘金砺滕延京刘金波吕怀民吕屾
Owner 吕怀民
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