Prestressed concrete hollow square pile and formation die

Abstract

The invention provides a prestressed concrete hollow square pile and a formation die. The quadrate pile comprises a quadrate pile body and a quadrate metal end plate, wherein all four corner edges of the quadrate pile body and the quadrate metal end plate are arc corner edges having same radius, and the radius of the arcs is 5 to 9 millimeters. The formation die comprises an upper die, a lower die, a lock catch device, and hoisting bolts, wherein the upper die and the lower die are buckled to form the formation die, and an internal cavity of the die is quadrate; four internal corner edges of the quadrate part are internal arc corner edges having same radius, and the radius of the arcs is 5 to 9 millimeters; a positioning pin is arranged at the part where the upper die is jointed with the lower die; and the hoisting bolts are coarse-tooth bolts having pitch of 2 to 4 millimeters. The prestressed concrete hollow square pile and the formation die have the effects that main ribs of the prestressed concrete hollow square pile body are consistent in stretching stress after being formed and stretched; the pile body has an attractive looking, the protective layer is uniform, and the high strength is achieved; the structural bearing capacity is high, the foundation bearing capacity is high, a material is saved, the flexural rigidity is high, the efficiency of the hoisting bolt on the formation die of the prestressed concrete hollow quadrate pile on dismounting and mounting is great, the service life is long, and the cost is low.

Description

technical field [0001] The invention relates to a concrete pile and a forming mold thereof, in particular to a prestressed concrete hollow square pile and a forming mold. Background technique [0002] The existing prestressed concrete hollow square pile and its forming mold, from the Chinese patent (200710068545.6) "prestressed high-strength concrete square pile and its manufacturing method and forming mold", its two ends are provided with square metal end plates connected with the steel cage, The four sides of the two square metal end plates are provided with welding grooves, the center is a round hole, and there are threading holes and tension holes symmetrically between the round hole and the four sides; the stirrups of the steel cage are continuously welded to the main reinforcement in a spiral shape; The shape of the board is square, and its four corners are two pairs of arcs, one large and one small. The arc radius is 5-10mm; the pile core is a cylindrical middle hole...

AI Technical Summary

Problems solved by technology

Due to the poor sealing performance of the tongue-and-groove board, slurry leakage is prone to occur during the molding process, resulting in the product being scrapped

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