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Partially prestressed and partially non-prestressed concrete hollow pile

A hollow square pile, non-prestressed technology, used in sheet pile walls, buildings, infrastructure engineering and other directions, can solve the problems of low reinforcement ratio, integrity, and difficulty in meeting high requirements for shear, bending and tensile properties. , to achieve the effect of improving the pile formation rate, the construction pile formation rate and the shear resistance capacity.

Inactive Publication Date: 2014-02-19
SHANGHAI ZHONGJI PILE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Recently, special-shaped triangular piles have also appeared, but the reinforcement ratio is low, and the integrity of the pile body, shear, bending, and tensile properties are difficult to meet the higher engineering requirements

Method used

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  • Partially prestressed and partially non-prestressed concrete hollow pile
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  • Partially prestressed and partially non-prestressed concrete hollow pile

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Embodiment Construction

[0025] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.

[0026] figure 1 is a perspective view of the present invention, figure 2 It is a sectional view of the present invention.

[0027] Such as figure 1 and 2 Shown: the partially prestressed and partially non-prestressed concrete hollow square pile provided by the present invention, the longitudinal axis direction of the partially prestressed and partially non-prestressed concrete hollow square pile is provided with a hollow square pile that runs through the entire partially prestressed and partially non-prestressed concrete The central through hole of the part of the prestressed part of the non-prestressed concrete hollow square pile, the outer circumference of the cross section is a rounded square or rectangle, and the inner circumference is a circle, and the part of the prestressed pa...

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Abstract

The invention relates to a partially prestressed and partially non-prestressed concrete hollow pile. The cross section periphery of the partially prestressed and partially non-prestressed concrete hollow pile is a rounded square or a rounded rectangle and the inner circumference is a circle; the length of the outer side and the inner circle diameter are combined according to certain values; the sectional geometric dimensioning in the whole vertical axis direction is identical. Longitudinal main ribs comprise prestress ribs and non-prestress ribs; the number of the prestress ribs and the non-prestress ribs is set according to a certain ratio and the arrangement is designed according to a certain rule; stirrups are fixed outside the main ribs in a roll welding mode or a binding connection mode; the thickness of outer protective layers of the prestress ribs is not less than 40 mm; the thickness of inner protective layers is not less than 35 mm; areas with the length of 1000 to 2000 mm at the pile ends are stirrup dense areas and the interval is from 40 to 70 mm; the stirrup interval is from 60 to 100 mm except the two end dense areas. The partially prestressed and partially non-prestressed concrete hollow pile has the advantages of effectively improving the fragility, increasing ductility, improving earthquake proof, transformation and mechanical performances and being widely applied and popularized to areas having a high requirement for earthquake fortification intensity.

Description

technical field [0001] The invention belongs to the construction field and relates to the improvement of the shape and structure of foundation piles in the construction field, in particular to a partially prestressed and partially non-prestressed concrete hollow square pile. Background technique [0002] There are many building materials for foundation pile engineering in the market, 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. Non-prestressed components mainly include traditional square piles, immersed pipe piles, etc. The performance is that the single pile bearing capacity is relatively low, the bending (tension) and shearing resistance are poor, the construction period is long, and the pile quality does not meet the design requirements. Prestressed component piles include pipe piles, centrifugal prestressed square piles, etc. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/58E02D5/30E02D27/34
Inventor 梁军起
Owner SHANGHAI ZHONGJI PILE IND
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