Pretensioned prestressed concrete quadrilateral pile and production method thereof

Abstract

The invention discloses a pretensioned prestressed concrete quadrilateral pile, which is characterized by comprising a plurality of main reinforcements, wherein the main reinforcements are welded with spiral reinforcements; the heads of the main reinforcements are greater than the diameters of the main reinforcements; both ends of the main reinforcements are connected with quadrilateral end plates respectively; concrete is poured outside a reinforcement cage frame consisting of the main reinforcements and the spiral reinforcements; the concrete is combined with the reinforcement cage frame into an integral quadrilateral pile body; and the center of the quadrilateral pile body is provided with a central round hole passing through the whole quadrilateral pile body. Aiming to overcome the deficiencies in the prior art, the invention provides the pretensioned prestressed concrete quadrilateral pile which has the advantages of high molding quality, high bearing capacity of a single pile, damage resistance during use of the reinforcement frameworks, high bending resistance bearing capacity, high shearing resistance, convenient stacking, and difficult damage during hoisting, transporting and transferring the pile. The invention also aims to provide a production method of the pretensioned prestressed concrete quadrilateral pile.

Description

technical field [0001] The invention relates to a pretensioned prestressed concrete quadrangular pile, and also relates to a production method of the pretensioned prestressed concrete quadrangular pile. Background technique [0002] At present, there are many precast concrete pile foundations used in construction projects, mainly concrete solid square piles, concrete hollow square piles, prestressed concrete pipe piles, precast concrete pouring piles, etc. Its main performance is as follows: [0003] The precast concrete solid square pile has a large friction area, but it has a large self-weight, and it is prone to cracks and breaks during hoisting, transportation, and construction transfer. It consumes too much concrete, steel and other materials during production, and it is not easy to weld. Due to the low strength of concrete , easy to burst piles and other defects. [0004] Cast-in-situ piles are greatly affected by the weather, and cannot be constructed in rainy days,...

AI Technical Summary

Problems solved by technology

[0007] 1. The seam of the pile body is just on the rounded corners or right angles of the four sides, which is prone to problems such as grout leakage and affects the forming quality of the square pile;

[0008] 2. The main reinforcement and stirrup of the steel cage skeleton are not firmly rolled and welded, and they are easy to loose

[0009] 3. The burns of the main bars during welding range from 1.0 to 20 mm, which greatly reduces the use area of ​​the steel bars and seriously affects the performance of the steel bars.

[0010] 4. The joints of the pile body are easy to be damaged and damage the pile body

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