A special-shaped high-bearing capacity concrete pile and its production method

Abstract

The invention discloses a special-shaped high bearing capacity concrete pile comprising a hollow special-shaped pile body and an end plate, wherein at least one surrounding rib which is perpendicular to the special-shaped pile body in an axial direction is arranged on the outer surface of the special-shaped pile body; and the vertical distance between each two adjacent surrounding ribs is 300-5000mm. The surrounding ribs are crossed to form at least one special-shaped rib with an acute angle A which is more than 0 degree and less than or equal to 90 degrees. The invention further provides a production method of the special-shaped high bearing capacity concrete pile, comprising the following steps of: conducting centrifugal or vibrating molding while casting concrete in the entire molding process, continuously injecting concrete without interruption until the total amount of the concrete is completely injected according to the total amount of the concrete needed by a molded product and the total molding time of 7-20min; and pouring the surplus paste in an inner hole to be clean after the molding. The production method has the following advantages that the centrifugal or vibrating molding is conducted while concrete is cast, so that a great deal of time is saved and the production efficiency is increased; the surplus paste after the concrete molding is reduced and even is avoided; the pile is molded to be more compact, so that the concrete intensity of the pile body is enhanced.

Description

technical field [0001] The invention relates to a special-shaped high-bearing-capacity concrete pile, and also relates to a production method of the special-shaped high-bearing-capacity concrete pile. Background technique [0002] At present, there are many materials used in the construction industry for pile foundations. The most commonly used ones are concrete solid square piles, concrete hollow square piles, pipe piles, cast-in-place concrete piles, and steel piles. [0003] Above concrete pile is used in engineering construction, has following weak point: [0004] 1. The concrete compressive strength of solid square piles and cast-in-place piles is generally below C45, and the strength is relatively low; 2. The construction is subject to great interference from the outside world, such as high temperature and rainy days; 3. The resistance level of pipe piles and hollow square piles 1. The mechanical properties such as shear resistance and vertical bearing capacity are sm...

AI Technical Summary

Problems solved by technology

[0004] 1. The concrete compressive strength of solid square piles and cast-in-place piles is generally below C45, and the strength is relatively low; 2. The construction is subject to great interference from the outside world, such as high temperature and rainy days; 3. The resistance level of pipe piles and hollow square piles 1. The mechanical properties such as shear resistance and vertical bearing capacity are small. 4. It is easy to break during production, transportation and hoisting; 5. The thickness of the concrete protective layer is small, so it is difficult to use in the erosive geological environment; 6. The reinforcement ratio is low , the rigidity of the pile body is poor, and the bearing capacity is weak in terms of seismic performance; 7. The stability in soft soil is poor; 8. The outer surface is relatively smooth, and the outer frictional resistance is small; 9. The cross-sectional area is small and the vertical bearing capacity is small; 10. , Square piles and cast-in-place piles use a large amount of concrete and steel, which seriously wastes national resources and causes great environmental pollution during construction

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