Prestress high intensity concrete square pile and its production method and moulding die

Abstract

The invention belongs to the architecture field, which relates to an improvement with the foundation pile shape and the structure and the manufacturing method of the foundation pile and the foundation pile shaper in the architecture field, in particular the invention is a prestressing force high strength concrete square pile and the manufacturing method thereof and the shaping device. In the invention a square terminal plate is disposed on the two ends of the square pile, and the four sides of the terminal plate is provided with a groove, while the center is equipped with a circular hole, and between the circular hole and the four sides, a strain hole and a threading hole are arranged symmetrically; a stirrp of a reinforcement cage in a twist is welded on the principal reinforcement continuously, wherein the principal reinforcement is the steel strand or the steel bar; the concrete square pile and the four-side corners of the terminal plate are in a stress elimination arc, and the pile core is a columnar mid level outlet having the same diameter with the terminal plate central circular hole. The manufacturing method is characterized in that, the principal reinforcement has the fix ed length and blanking, and the stirrp of the reinforcement cage is welded in the seam welder with the high degree of mechanisation; the principal reinforcement is stretched in a group of a whole pile fixed value, wherein the stretching performance is good and the balance is consistent; the disposable high pressure has short shaping time, low energy consumption, high product grade; the die design meets with the shaping requirement of the shape, which is convenient to use.

Description

technical field [0001] The invention belongs to the construction field, and relates to an improvement in the shape and structure of a foundation pile in the construction field, a method for manufacturing the foundation pile, and a forming tool for the foundation pile. Specifically, it is a prestressed high-strength concrete square pile, its manufacturing method and forming mold. Background technique [0002] There are many pile materials in the market as foundation pile engineering, such as pipe piles, various square piles, cast-in-situ piles, bored piles, etc. These piles are mainly divided into two categories: non-prestressed components and prestressed components. Prestressed component piles include pipe piles, centrifugal prestressed square piles, etc. Their disadvantages are that they are often brittle, the time from cracking to failure is short, and the ductility of the pile body is poor. When an earthquake occurs, the building collapses instantly, so that the people ...

AI Technical Summary

Problems solved by technology

But they have common disadvantages: the former is that the inner cavity section of the upper and lower molds is an isosceles right triangle, and they form a square after buckling.

[0006] If the centrifugal forming mold is improved, it is good; but there is another problem: when the square pile is particularly thick, the power of the centrifuge can no longer overcome its weight, and as the pile shape increases, the centrifugal force will cause the inner and outer layers of the pile body to lose weight. Concrete layering, concrete layering will seriously weaken the axial bearing capacity of the pile body, the centrifugal forming method is not suitable for making super large centrifugal concrete square piles

However, the traditional vibratory pile-making method inherently has the problem of uneven vibration and impermeability. Making such a super-large centrifugal concrete square pile will also lead to serious stratification of the upper and lower concrete, and it cannot be used. This problem is urgently needed. people to solve

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