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Tube pile provided with posttensioned prestressing steel noose hole and posttensioned prestressing pulling tube pile

A post-tensioning prestressing, steel noose technology, applied in sheet pile wall, construction, infrastructure engineering, etc., can solve the problem of not seeing pullout-resistant pipe piles, etc.

Inactive Publication Date: 2012-04-11
从卫民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no pullout-resistant pipe pile with this structure

Method used

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  • Tube pile provided with posttensioned prestressing steel noose hole and posttensioned prestressing pulling tube pile
  • Tube pile provided with posttensioned prestressing steel noose hole and posttensioned prestressing pulling tube pile
  • Tube pile provided with posttensioned prestressing steel noose hole and posttensioned prestressing pulling tube pile

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Such as figure 1 , 2 As shown, a pipe pile provided with a post-tensioned prestressed steel cable hole includes a pipe pile body 1, and a hole 3 is arranged on the inner circumference of the pile body 1 coaxially. Each hole center of the holes 3 is equidistant from the center of the pile body, and the holes 3 are equally divided into a circle in the pile body 1 .

Embodiment 2

[0017] Such as figure 1 , 2 As shown, the present invention includes a pipe pile body 1, and a cap surface 2 provided at the upper end of the pile body 1 . A week coaxial line is provided with hole 3 in pile body 1, post-tensioned prestressed steel cable 4 lower ends are provided with enlarging head 5, and upper end passes hole 3 that pile body 1 is established, is connected and fixed by connector 6 after stretching. The upper end of the steel rope 4 and the connecting piece 6 arranged thereon are buried in the bearing platform 2 .

[0018] Such as figure 2 As shown, each hole center of the hole 3 is equidistant from the center of the pile body 1, and the holes 3 are equally divided into a circle in the pile body 1.

[0019] In this embodiment, the connecting piece 6 is selected as an anchor clamp, and the expanding head 5 is selected as an extruded anchor.

[0020] The preparation process of the present invention: when the pipe pile is prefabricated, steel rope holes are...

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Abstract

The invention discloses a tube pile provided with a posttensioned prestressing steel noose and a posttensioned prestressing pulling tube pile, comprising a tube pile body and a bearing platform board at the upper end of the pile body, a hole is arranged at a circle of coaxial line in the pile body, the lower end of the posttensioned prestressing steel noose is provided with the expanded head, the upper end penetrates through the hole arranged on the pile body, is tensioned and is connected and fixed by virtue of a connecting piece, and the upper end of the steel noose and the connecting piece thereof are arranged in the bearing platform board. By adopting the invention, application range of the tube pile is expanded, posttensioned prestressing is adopted, rigidity of the pile body is greatly improved, the pile body is extruded under the prestressing longitudinal action and is radially enlarged, soil body is extruded, and uplift resistance is improved, thus pile length can be shortened; and meanwhile cracking phenomenon as the pile body is tensioned is overcome.

Description

technical field [0001] The invention relates to the construction field, in particular to pipe piles. Background technique [0002] Pretensioned prestressed reinforced concrete pipe piles are widely used in the construction of houses, roads, bridges and other projects due to their superior performance. Its main function is that it can be mechanically driven into the hard rock formation underground like a nail, and can better support the weight of large buildings such as houses and bridges. However, the pipe pile cannot be used as an uplift pile, which limits the application of the pipe pile. The strength of post-tensioned prestressed steel cables is 7-8 times that of ordinary steel bars. If steel cables are used to replace the original pre-tensioned steel bars, the amount of steel used will be saved. Also do not see the pullout-resistant tubular pile of this structure at present. Contents of the invention [0003] The technical problem to be solved by the present inventi...

Claims

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Application Information

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IPC IPC(8): E02D5/58E02D5/30
Inventor 从卫民
Owner 从卫民
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