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Spiral concrete prefabricated tubular pile for overhead transmission line

A technology for overhead transmission lines and prefabricated pipe piles, which is applied to sheet pile walls, buildings, infrastructure projects, etc., can solve problems such as increased project investment costs and loosening, and achieves improved tensile capacity, prevention of loosening, and reduction of concrete consumption. the effect of material and cost inputs

Pending Publication Date: 2017-09-08
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the tower foundations with the above two structures are used, there is a problem: in the case of a large foundation force, it is necessary to increase the length of the pipe pile or increase the diameter of the pipe pile to meet the friction generated by the transmission line tower foundation. However, increasing the length of the pipe pile or increasing the diameter of the pipe pile will directly affect the increase of the project investment cost.
[0004] Authorized announcement number CN200985507Y discloses a pipe pile with a concrete bottom cover, a pile cap and a pile wing. The pile wing in the vertical direction is set in its structure. The contact area between the wing and the ground is effective, especially when the pile is used in the soft soil environment, the structure has the risk of loosening

Method used

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  • Spiral concrete prefabricated tubular pile for overhead transmission line
  • Spiral concrete prefabricated tubular pile for overhead transmission line
  • Spiral concrete prefabricated tubular pile for overhead transmission line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 1 to Figure 3 As shown, the present invention includes a pipe pile main body 1 and a spiral protrusion 2 integrally formed on the outer wall of the pipe pile main body. The upper end surface of the preset connection bolt 3.

[0032] The manufacturing process of the present invention comprises the following steps: the first step is to manufacture the mould, the mold adopts a steel structure including a flange-connected left half-ring mold and a right half-ring mould, and the left half-ring mold and the right half-ring mold are produced by a stamping device. Matching spiral grooves; the second step is to make a steel frame, and preset connecting bolts on the upper end of the steel frame to accept the lower end of the tower; the third step is to set the mold on the outside of the steel frame and pour concrete on the mold At the same time, the centrifugal equipment is used to drive the mold and the steel frame to rotate to ensure that the concrete is evenly...

Embodiment 2

[0035] Such as Figure 4 As shown, the present invention includes a pipe pile main body 1 and a spiral protrusion 2 integrally formed on the outer wall of the pipe pile main body. The upper end surface of the main body 1 is preset with a connecting bolt 3 , a backing plate 4 is sleeved on the connecting bolt 3 , and a disc spring assembly 5 is arranged between the lower end surface of the backing plate 4 and the upper end surface of the pipe pile main body 1 .

[0036] The structure of this embodiment is basically the same as that of Embodiment 1. The difference is that the disc spring assembly 5 and the backing plate 4 are sleeved on the connecting bolts. In the case of swaying, the disc spring assembly 5 provides sufficient deformation space for the lower end of the pole tower, thereby preventing hard damage to the tower body, cross arms or hanging points of the pole tower, and improving the stability and reliability of the present invention during use.

Embodiment 3

[0038] Such as Figure 5 and Figure 6 As shown, the present invention includes a pipe pile main body 1 and a spiral protrusion 2 integrally formed on the outer wall of the pipe pile main body. The pipe pile main body 1 is a hollow columnar structure. The upper end surface of the pipe pile main body 1 is preset with a connecting bolt 3, the connecting bolt 3 is sleeved with a backing plate 4, and a disc is set between the lower end surface of the backing plate 4 and the upper end surface of the pipe pile main body 1. The spring component 5 and the pile tip 6 are integrally formed at the lower end of the pipe pile main body 1, and the outer wall of the pile tip 6 is integrally formed with a spiral protrusion 2 .

[0039] The structure of this embodiment is basically the same as that of Embodiment 2. The difference is that there are many spiral protrusions 2 and the end faces are in a triangular structure. In the stone environment, the structural design can quickly screw the p...

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Abstract

The invention belongs to the technical field of power equipment and particularly relates to a spiral concrete prefabricated tubular pile for an overhead transmission line. The spiral concrete prefabricated tubular pile comprises a tubular pile body and a spiral protrusion integrally formed on the outer wall of the tubular pile body. Connecting bolts are arranged on the upper end face of the tubular pile body, the connecting bolts are sleeved with a cushion plate, and a disc spring assembly is arranged between the lower end face of the cushion plate and the upper end face of the tubular pile body. By arranging the spiral protrusion on the outer wall of the tubular pile body, basic acting force of an overhead transmission line tower is increased, the service life of the prefabricated tubular pile is not affected, meanwhile, materials can be saved, the cost can be reduced, and the spiral concrete prefabricated tubular pile is free of maintenance.

Description

technical field [0001] The invention belongs to the technical field of electric power equipment, and in particular relates to a spiral concrete prefabricated pipe pile for an overhead power transmission line. Background technique [0002] With the continuous development of power grid technology, the tower structure and foundation form of overhead transmission lines are also constantly changing. Among them, towers of overhead transmission lines are the main supporting structures of overhead lines, mostly composed of reinforced concrete or steel, and the foundation of towers is towers. The main supporting structure of the tower foundation needs to choose different foundation forms for structural design according to the size of the foundation force of the tower foundation, geological and landform conditions, construction machinery and equipment, etc. [0003] Concrete prefabricated pipe piles are used in the foundation of the pole tower structure. In order to make the concrete ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/30E02D5/56
CPCE02D5/30E02D5/56
Inventor 胡鑫程安民郭新菊席小娟奚妍李宁王喜俊刘裕强张祥辉王文峰杨敏尉志峰梅广似丁世询
Owner STATE GRID CORP OF CHINA
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