Production technique for hollow square concrete pile

Abstract

The invention discloses a production technique for a hollow square concrete pile. The cross section of the hollow square concrete pile is square. A square central hole penetrating through the whole hollow square concrete pile is formed in the center of the hollow square concrete pile in the direction of the longitudinal axis of the hollow square concrete pile. The hollow square concrete pile is manufactured through centrifugal forming. A mold adopted by the production technique comprises an outer mold body and an inner mold body. Grouting pipes are arranged outside the outer mold body. Grouting holes communicating with the area between the outer mold body and the inner mold body are formed in each grouting pipe at intervals. By the adoption of the production technique of the hollow square concrete pile, the problem that a central hole of a square pile produced through an existing centrifugal method is a round hole can be solved, and the wall thicknesses of concrete piles are made identical.

Description

technical field [0001] The invention relates to the improvement of the forming process of concrete hollow square piles in the field of civil engineering, or the improvement of the production process of prefabricated concrete hollow columns. Background technique [0002] Most of the existing prefabricated concrete hollow square piles are formed by the centrifugal molding method. The center is a round hole, forming a section with an outer square and an inner circle. The wall thickness of the pile is different, and the concrete is unevenly distributed on the section, resulting in waste of concrete; In the process, the pile damage rate is too high, burying a hidden danger to the safety of the building. [0003] The patent application No. 2007100685456 discloses a technology for producing concrete square piles by centrifugal method. The cross-sectional shape of the square piles is square, and the center is a round hole. The patent application number 2010102568497 discloses a met...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing prefabricated concrete hollow square piles are formed by the centrifugal molding method. The center is a round hole, forming a section with an outer square and an inner circle. The wall thickness of the pile is different, and the concrete is unevenly distributed on the section, resulting in waste of concrete; The pile damage rate is too high during the process, which bury hidden dangers to the safety of the building

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