Prestressed high-strength concrete hollow support pile and manufacturing method thereof

Abstract

The invention provides a prestressed high-strength concrete hollow support pile and a manufacturing method thereof. The prestressed high-strength concrete hollow support pile comprises a reinforcement cage framework and a concrete pile body. The cross section of the prestressed high-strength concrete hollow support pile is of a polygonal hollow pipe shape. The prestressed high-strength concrete hollow support pile comprises an upper pile body flange plate, a lower pile body flange plate, a left pile body supporting leg, a right pile body supporting leg, a pile body tenon and a pile body mortise, wherein the upper pile body flange plate and the lower pile body flange plate are arranged symmetrically; each pile body flange plate is formed by welding two or more longitudinal prestress main ribs and two or more hoop ribs in a crossed mode; hoop ribs are evenly distributed between the upper pile body flange plate and the lower pile body flange plate in a surrounding mode; the pile body tenon is located on one side of the left pile body supporting leg, the pile body mortise is located in one side of the right pile body supporting leg, and the pile body tenon and the pile body mortise are in engaged fit; reserved grouting slots are formed in the middle of the pile body tenon and the middle of the pile body mortise symmetrically. The prestressed high-strength concrete hollow support pile is firm in structure, good in soil conserving and water stopping effect, easy and convenient to construct and low in project cost, and by adoption of the mechanical and automatic producing and processing procedures, the construction period is short and efficiency is high.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a prestressed high-strength concrete hollow support pile and a manufacturing method thereof. Background technique [0002] In the field of civil engineering, there are many forms of building support structures currently used. Commonly used permanent retaining support structures include: cast-in-place underground diaphragm wall, gravity reinforced concrete retaining wall, cast-in-situ bored pile, prefabricated corrugated Sheet piles or U-shaped sheet piles, prefabricated flat piles, etc., as well as traditional mortar block stone and dry block stone structures. Most of the traditional support structures adopt the method of cast-in-place, which has long construction period, low work efficiency, high engineering cost, and complicated construction procedures. Moreover, the durability of mortar block stone and dry block stone structures is poor, and they expand and cool when...

AI Technical Summary

Problems solved by technology

This kind of prefabricated corrugated sheet pile has the following defects: it adopts the pedestal method production process, and the degree of mechanization and automation is low; it is labor-intensive, the output is small, and the work efficiency is low; The pre-embedded rubber waterstop is used at the groove-and-groove joint of the pile body. Due to the extrusion friction during the construction process, the rubber waterstop will be twisted, deformed, broken, squeezed, and grooved. Therefore, after the construction is completed , the phenomenon of water seepage at the junction of two piles is common

Therefore, neither corrugated sheet piles nor prefabricated sheet piles can completely solve the problem of water stop when applied to support projects that require high anti-seepage functions, and the cost is high. also restricted

[0004] Prestressed pipe piles, which are mainly used in construction pile foundation projects in China, are mainly designed to withstand vertical compressive loads. The cross-sectional shape is designed as a circular ring, and the prestressed main reinforcement is also arranged in a circular shape. This distribution of the main reinforcement is obtained. The bending moment of the pile body is very small, so it cannot be applied to the retaining and supporting projects that need to resist large horizontal loads; and the prestressed hollow square pile and the solid square pile, because there is no connection groove designed, and the extrusion during construction The soil effect is large, so that the piles cannot be tightly connected with the piles. When used in soil retaining and supporting projects, the gap between the two piles is large, which makes it difficult to fix the soil and stop water, and cannot meet the project quality requirements.

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