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Post-grouting prestressed concrete hollow pile and its manufacturing method

A technology of post-grouting piles and hollow piles, which is applied in the direction of sheet pile walls, buildings, and foundation structure engineering, etc., can solve the problems of restricting the application of post-grouting technology, reduce the effect of soil squeezing, reduce input costs, and reduce adverse effects

Active Publication Date: 2017-04-12
上海市房屋建筑设计院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has not been popularized and applied in prestressed hollow piles, which greatly limits the application of post-grouting technology.

Method used

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  • Post-grouting prestressed concrete hollow pile and its manufacturing method
  • Post-grouting prestressed concrete hollow pile and its manufacturing method
  • Post-grouting prestressed concrete hollow pile and its manufacturing method

Examples

Experimental program
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Effect test

Embodiment Construction

[0023] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] Such as Figure 1 to Figure 5 As shown, a post-grouting prestressed concrete hollow pile includes several hollow pile units, a post-grouting pile tip 6, and a pile top grouting pipe connector 14; each hollow pile unit includes a lower end plate 1 and an upper end plate 2 , rear grouting lower connector 3, rear grouting upper connector 4, grouting pipe 5, sealing washer and sealing ointment 8; the lower end plate 1 is fixed on the bottom of the hollow pile unit pile body, and the rear grouting The lower connector 3 is installed in the center hole of the lower end plate 1, and is sealed by a sealing gasket and sealing ointment 8, and two pile body grouting valves 7 and the pile body of the hollow pile unit are symmetrically fixed on the side wall of the lower end plate 1 External communication; the upper end plate 2 is fixed on the top...

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PUM

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Abstract

The invention relates to a post-grouting prestressed concrete hollow pile and the manufacturing method thereof. The hollow pile comprises multiple hollow pile units, a post-grouting pile tip and a pile butt grouting pipe connecting piece, wherein each hollow pile unit comprises a lower end plate, an upper end plate, a post-grouting lower connecting piece, a post-grouting upper connecting piece, a grouting pipe, a sealing washer and sealing cement. On the premise that the traditional pile foundation production and construction technology is only changed slightly, the advantages of prestressed hollow piles and the advantages of the post-grouting technology are combined effectively, original production equipment and construction equipment are fully utilized, investment is reduced, the bearing capacity of a single pile can be improved greatly, soil compaction effect is reduced, and construction efficiency is improved.

Description

technical field [0001] The invention relates to a post-grouting prestressed concrete hollow pile and a manufacturing method thereof, belonging to the field of prestressed hollow pile production and construction. Background technique [0002] The prestressed hollow pile has a high degree of mechanized construction on the construction site, fast construction speed, and clean site, which can avoid the occurrence of mud flow on the bored pile construction site, and there will be no manual excavation pile construction site to pump water and pile up soil. The hectic scene of the soil, the strength of the pile body is high and so on. However, due to factors such as the smooth body of the prestressed hollow pile and the small diameter of the pile tip, the frictional resistance between the pile and the soil is small, and the bearing capacity of the pile tip is limited. It often makes its higher pile body strength not fully utilized, thereby increasing the number of pile foundations ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/58
Inventor 王成毅申海娥
Owner 上海市房屋建筑设计院有限公司
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