Prestressed concrete pipe pile combining post grouting technology with expanding technology, and production method thereof

Abstract

The invention relates to a prestressed concrete pipe pile combining a post grouting technology with an expanding technology. The prestressed concrete pipe pile comprises a prestressed concrete pipe pile body, a hemispheric pile head, a grouting hole, valves, hinges, a grouting pipe, line spray pipes, a hydraulic jack, a high-strength alloy blade, a blade fixing plate, a cubic thick steel cushion block, a blade outlet gap and spouting ports, wherein a grouting device is arranged in the prestressed concrete pipe pile body, the grouting device comprises a grouting pipe and the grouting hole, andthe grouting hole is formed in the outlet end of the grouting pipe; the line spray pipes are arranged at the two sides of the prestressed concrete pipe pile body; one spouting port is formed in each line spray pipe; one valve and one hinge are welded to each spouting port; and each valve is connected to the grouting hole through the corresponding hinge. The prestressed concrete pipe pile disclosedby the invention has the following beneficial effects: due to the adopted pile-side post grouting technology, the exertion level of pile-side friction resistance can be increased to a large extent; and moreover, compared with the traditional point grouting technology, the pile-side friction resistance is much easily increased due to line grouting, so that the bearing capacity of a pile body is improved.

Description

technical field [0001] The invention relates to a novel prestressed concrete pipe pile, in particular to a prestressed concrete pipe pile combined with post-grouting and diameter-expanding techniques and a manufacturing method thereof. Background technique [0002] As an ancient form of foundation, pile foundation is also the most widely used form of building foundation. With the development of science and technology, especially mechanical technology, the pile foundation has also changed from simple to complex, and various pile foundation construction techniques have emerged as the times require, and prestressed concrete pipe piles are one of the representatives. Prestressed concrete pipe piles have high pile body strength, strong compression and crack resistance, and factory prefabricated construction, which ensures the quality of the pile body. Compared with solid prefabricated piles, it has a lower cost and a shorter construction period. Reduce time cost, so it is widely...

AI Technical Summary

Problems solved by technology

[0004]In summary, although the current research on post-grouting pile technology and diameter expansion technology is very common, but for prefabricated pile diameter expansion technology and the two technologies The combined literature has not been reported, so in view of this situation, comprehensively consider the defects existing in the current pipe pile construction, seek a new type, avoid the soil plug effect, and facilitate the exertion of pile side friction resistance, combined with post-grouting and diameter expansion technology. Prestressed concrete pipe piles and their manufacturing methods are very important

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