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Prestressed reinforced concrete solid square pile and manufacturing technique thereof

A reinforced concrete and prestressed technology, applied in sheet pile walls, foundation structure engineering, buildings, etc., can solve problems such as difficult to ensure uniform temperature field, difficult to control quality, low production efficiency, etc., to improve the mechanical properties of piles, The effect of improving crack performance and improving labor efficiency

Inactive Publication Date: 2013-05-22
江苏固丰管桩集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low production efficiency and difficult quality control
Even if the covering method is used for steam curing, the quality is still difficult to control because the temperature field is difficult to ensure uniformity

Method used

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  • Prestressed reinforced concrete solid square pile and manufacturing technique thereof
  • Prestressed reinforced concrete solid square pile and manufacturing technique thereof
  • Prestressed reinforced concrete solid square pile and manufacturing technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, the present embodiment provides a prestressed reinforced concrete solid square pile, including a pile body 6, a pile cap 5 and a pile tip 7, wherein:

[0044] Described pile body 6 comprises concrete, pile body reinforcement cage, and described pile body reinforcement cage is square, is formed by roll welding of several longitudinal main reinforcements 1 and spiral stirrup 2; Described longitudinal main reinforcement 1 preferably adopts spiral groove steel bar, And its two ends are provided with piers; The cross-section main body of described pile body 6 is square, and side length is 600mm; or chamfering or any combination thereof; within the range of 150mm at both ends of the pile body reinforcement cage is a stirrup densification area, the spiral stirrup 2 pitch of the stirrup densification area is 50mm, and the spiral stirrup 2 pitch of the remaining areas is 85mm; in the present embodiment , the longitudinal main reinforcement 1 is 12, wh...

Embodiment 2

[0048] Such as figure 2 As shown, the present embodiment provides a prestressed reinforced concrete solid square pile, including a pile body 6, a pile cap 5 and a pile tip (not shown in the figure), wherein:

[0049] Described pile body 6 comprises concrete, pile body reinforcement cage, and described pile body reinforcement cage is square, is formed by roll-welding of several longitudinal main reinforcements 1 and spiral stirrup 2; The longitudinal main reinforcement 1 of described pile body reinforcement cage preferably adopts Spiral channel steel bar, and its two ends are provided with pier head; The cross section main body of described pile body 6 is square, and side length is 600mm; The four corners of the cross section of described pile body 6 are right angles or inner arc angles Or outer arc angle or chamfer or any combination thereof; within the range of 140mm at both ends of the pile body reinforcement cage is the stirrup density area, the spiral stirrup 2 pitch of t...

Embodiment 3

[0053] When the actual required square pile is longer, for the convenience of manufacture and transportation, it can be made in two sections, that is, an upper section pile is added at the pile cap end of the prestressed reinforced concrete solid square pile provided by the present invention, and the upper section The pile includes an upper section pile body and an upper section pile cap arranged at both ends of the upper section pile body. The structure of the upper section pile body and the upper section pile cap is consistent with the structure of the pile body and the pile cap in Embodiment 2. Herein No longer. For the convenience of pile cutting, the pile cap at the head end of the upper pile is only provided with an end plate, without pile hoops and anchor bars.

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Abstract

The invention belongs to the field of construction materials and provides a prestressed reinforced concrete solid square pile and a manufacturing technique thereof. The prestressed reinforced concrete solid square pile comprises a pile body, a pile cap and a pile point, wherein the pile body comprises concrete and a pile body reinforcement cage. The pile body reinforcement cage is square and is formed by roll welding of a plurality of longitudinal main ribs and spiral stirrups. The pile cap is arranged at one end of the pile body and comprises an end plate, wherein the end plate is a square steel plate. The pile point is arranged at the other end of the pile body. The pile point is a steel pile point or a reinforced concrete pile point. The prestressed reinforced concrete solid square pile has the advantages that the structural design is reasonable, excellent anti-cracking performance is achieved, and efficiency of the manufacturing technique is high. The prestressed reinforced concrete solid square pile is suitable for an industrialized production mode.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a prestressed reinforced concrete solid square pile and a production process thereof. Background technique [0002] In the process of strength development of concrete, accompanied by volume shrinkage, when the tensile stress generated by restrained shrinkage exceeds the immediate tensile strength of concrete, or the tensile strain exceeds the immediate ultimate tensile strain of concrete, cracks will occur inside the concrete. Due to the high density of the prefabricated reinforced concrete solid square pile, the tensile strength of the concrete is much lower than its compressive strength. During the hoisting and transportation process, the cracks generated during the strength development of the pile body concrete will expand under the action of external force. Unicom, resulting in cracking in the lower part of the pile concrete. [0003] For existing prefabricated reinforced c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/30E02D5/58E02D5/72
Inventor 朱克平张风臣汤永柳华文升朱加刚张栋
Owner 江苏固丰管桩集团有限公司
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