Preparation method for prestress concrete pile

Abstract

The invention relates to the technical field of construction engineering, in particular to a preparation method for a prestress concrete pile. The preparation method comprises the following steps thata first end plate and a second end plate are prepared, and screw-thread steel and a prestressed tendon are fixed on the first end plate; the length of the prestressed tendon is stretched by 30%-60% through a tensioning device; the screw-thread steel is cut off to enable the length of the screw-thread steel to be equal to the length of the prestressed tendon; the second end plate is correspondingly fixed to the screw-thread steel and the prestressed tendon; the length of the prestressed tendon and the length of the screw-thread steel are synchronously stretched by 30%-60% by utilizing the tensioning device; stirrups are bound outside the prestressed tendon and the screw-thread steel to form a whole framework of the pile; a template is prefabricated on the whole framework, concrete is poured and tamped, and maintenance is carried out after pouring is finished. The preparation method has the advantages that secondary tensioning of PC steel bars is utilized, so that the yield strength ofthe steel bars is enhanced, then the overall bending and shearing resistance of the pile body is improved, the reinforcing ribs are arranged on the end plates, so that the binding degree of the end plates and the concrete is increased.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a preparation method of a prestressed concrete pile. Background technique [0002] Prestressed piles have the advantages of durability and low cost, and have been widely used in pile foundation projects such as buildings and bridges, and are often used in deep foundation pit slope support. During the construction process, prestressed piles are usually installed by hammering piles or static pressure piles. This construction method puts forward high requirements on the bending and shearing resistance of the pile body, but the preparation of prestressed piles in the prior art The traditional method is backward, and the tensioning method of prestressed tendons and steel bars cannot fully exert the mechanical properties of the materials, resulting in a decrease in the flexural and shear strength of the pile, and the pile body is prone to fracture during the pile drivi...

AI Technical Summary

Problems solved by technology

During the construction process, prestressed piles are usually installed by hammering piles or static pressure piles. This construction method puts forward high requirements on the bending and shearing resistance of the pile body, but the preparation of prestressed piles in the prior art The traditional method is backward, and the tensioning method of prestressed tendons and steel bars cannot fully exert the mechanical properties of the material, resulting in a decrease in the flexural and shear strength of the pile, and the pile body is prone to fracture during the pile driving process

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