Prestressed high-strength concrete hollow support pile

Abstract

The invention provides a prestressed high-strength concrete hollow support pile. The prestressed high-strength concrete hollow support pile comprises a reinforcement cage framework and a concrete pile body, the cross section of the concrete pile body is in a polygonal hollow tube shape, and the concrete pile body comprises a pile body upper flange plate, a pile body lower flange plate, a pile body left side supporting leg, a pile body right side supporting leg, a pile body tenon and a pile body mortise groove. The pile body upper flange plate and the pile body lower flange plate are symmetrically arranged and are both formed by welding more than two longitudinal prestressed main reinforcements and more than two hoop reinforcements in a crossed manner; the hoop reinforcements are uniformly distributed between the pile body upper flange plate and the pile body lower flange plate in a surrounding manner; the pile body tenon and the pile body mortise groove are located on one side of the pile body left supporting leg and one side of the pile body right supporting leg correspondingly, and the pile body tenon and the pile body mortise groove are meshed and matched. Grouting reserved hole grooves are symmetrically formed between the pile body tenon and the pile body mortise groove. According to the prestressed high-strength concrete hollow support pile, the structure is stable, the soil fixing and water stopping effects are good, construction is easy and convenient, the construction cost is low, mechanical and automatic production machining procedures are adopted, the construction period is short, and the efficiency is high.

Description

[0001] This application is a divisional application of the invention patent of the parent application titled "a prestressed high-strength concrete hollow support pile"; the application number of the parent application is: CN201610046345.X; the application date of the parent application is: 2016-01 -25. technical field [0002] The invention relates to the technical field of civil engineering, in particular to a prestressed high-strength concrete hollow support pile. Background technique [0003] 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 ...

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

[0005] 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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