A mold for forming variable-section piles

Abstract

The invention discloses a mold for forming variable-section piles. The mold cavity of the mold forms at least one regular polygonal thick hole section and at least one regular polygonal fine hole section along the length direction, and the regular polygonal thick hole section and the regular polygonal thick hole section The regular polygon fine hole section is connected; wherein, the hole wall of the regular polygon fine hole section is provided with at least one groove; the mold is in the cross section of the regular polygon coarse hole section, and the hole wall reaches the mold The shortest linear distance of the central axis is D1; ​​the mold is in the cross-section of the regular polygon fine hole section, the shortest linear distance from the hole wall to the central axis of the mold is D2, and the difference between D1 and D2 is greater than The groove depth of the groove. The mold for forming variable-section piles has the advantage of simple structure, and can meet the requirements of forming variable-section piles with better pullout resistance and bearing performance.

Description

technical field [0001] The invention relates to the field of pipe pile molds, in particular to a mold for forming variable-section piles. Background technique [0002] Under normal circumstances, reinforced concrete prefabricated piles are round piles or square piles prefabricated through molds in the factory, and then transported to the location where the pile is located, and a certain degree of technical measures such as hammering and static pressure are applied to it. On the basis of the application, the pile body enters the predetermined position. Compared with other piles, the reinforced concrete prefabricated pile shows a relatively strong load capacity, relatively small settlement deformation, and good construction performance during the actual application process. It has the advantages of simplicity, low cost and relatively high efficiency, so it has been widely used in pile foundation engineering. Existing concrete prefabricated piles are usually straight piles wit...

AI Technical Summary

Problems solved by technology

[0005] Although the above-mentioned concave-convex prefabricated pile mold can be used to make variable-section piles that improve the uplift bearing performance through the concave-convex molded plate, there is a problem of complex structure in the concave-convex precast pile mold; The inner wall of the mold and the lower mold fits together, which makes the outer end surface of the prefabricated reinforcement of the formed prefabricated pile flush with the outer wall surface of the large diameter section of the prefabricated pile. Then, when the prefabricated pile is used, the prefabricated reinforcement separates the surrounding soil into multiple parts. Isolated arc-shaped block, which makes the arc-shaped block and the outer wall of the small-diameter section not tightly fitted, resulting in a limited increase in the relative friction between the pile body and the surrounding soil, thereby improving the uplift bearing performance of the concave-convex prefabricated pile limited

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