V-shaped prestressed enclosure pile and its construction method

Abstract

The invention provides a V-shaped prestress fender post comprising a post body and stranded wires embedded in the post body and used as main reinforcements. The V-shaped prestress fender post is characterized in that the post body is of a V-shaped section consisting of an enlarged upper end part, a lower end part and a web plate; stirrups are embedded in the enlarged upper end part; a reinforcing net is embedded in the web plate; and the stranded wires are longitudinally embedded in the enlarged upper end part and the lower end part. The bending rigidity in two directions of the V-shaped prestress fender post is high; the section stress of the V-shaped prestress fender post is reasonable; and especially the high-tensile steel stranded wires are used as the main reinforcements, so that the use amount of steel bars is greatly reduced, and the V-shaped prestress fender post is small in wall thickness, light in deadweight and less in soil squeezing.

Description

Technical field [0001] The invention relates to the field of geotechnical engineering and prefabricated component manufacturing, in particular to a prefabricated pile for deep foundation pit support and a manufacturing method. Background technique [0002] Deep foundation pit retaining piles in soft soil areas usually use bored piles, which are expensive and difficult to discharge mud and pollute the surrounding environment. Traditional prefabricated reinforced concrete retaining piles have self-heavy weight, low bending stiffness and serious soil squeezing. Patents 201210290146.5 and 201220098276.4 disclose an I-shaped or U-shaped retaining pile. Although the wall thickness is small and soil squeezing is small, the manufacturing process is complicated, the work efficiency is low, and the cost is high. A prefabricated pre-stressed enclosure pile manufactured by the long-wire method without side molds and its manufacturing method have not been reported yet. Summary of the inventi...

AI Technical Summary

Problems solved by technology

[0002] The deep foundation pit protection piles in soft soil areas usually use bored piles, which are expensive, difficult to discharge mud, and pollute the surrounding environment. However, traditional prefabricated reinforced concrete protection piles are heavy in weight, low in bending rigidity, and severely squeezed. Patents 201210290146.5 and 201220098276.4 disclose an I-shaped or U-shaped enclosure pile. Although the wall thickness is small and the soil is less squeezed, the manufacturing process is complicated, the work efficiency is low, and the cost is high.

A kind of prefabricated prestressed enclosure pile and its manufacturing method which are manufactured by long-line method without side formwork have not been reported yet.

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