Horizontal force supporting pile and production process thereof

A production process and horizontal force technology, applied in sheet pile walls, manufacturing tools, infrastructure engineering, etc., can solve problems such as steel bar fracture and poor ductility, and achieve the effects of improved ductility, low cost, and improved overall performance

Inactive Publication Date: 2009-11-04
JIANHUA CONSTR MATERIALS (JIANGSU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, in order to overcome the deficiencies of the existing technical problems, the present invention provides a horizontal force bearing pile and its production process, which can well make up for the poor bending resistance of the existing pipe piles, the failure is brittle failure, and the extension Poor performance, the pipe pile spreads rapidly after cracking, the steel bar in the tension zone quickly enters yield and shrinks until it breaks, the ultimate bending moment and the cracking moment are not much different, which improves the overall performance of the pipe pile, and the process is simple and the cost is low. , cost-effective

Method used

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  • Horizontal force supporting pile and production process thereof
  • Horizontal force supporting pile and production process thereof
  • Horizontal force supporting pile and production process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1 , 2 As shown, the pile type of this embodiment is ¢500X100, the traditional formula can be used to design the concrete 4 with a strength grade of C60, and the prestressed steel bars 2 can be thirteen high-strength prestressed concrete steel rods with a diameter of ¢10.7. It is 1570Mpa, and the non-prestressed steel bar 1 can adopt four HRB335 rebars with a diameter of ¢12.

[0029] First, the prestressed steel bar 2, non-prestressed steel bar 1, and spiral bar 3 are fixed in length, cut and blanked, and then the prestressed steel bar 2 is headed, and the wire is cold drawn into a cold drawn wire; the prestressed steel bar 2 and the spiral bar 3 are roll-welded into a Steel cage, and then the non-prestressed steel bars 1 are longitudinally bound and evenly distributed on the inner side of the spiral bars 3 in the tensile area 7 of the pipe pile section to make a steel bar skeleton cage 5; after making the end plate 6, the steel bar skeleton cage 5 and ...

Embodiment 2

[0032] Such as image 3 Shown, repeat embodiment 1, have following difference: prestressed reinforcing bar 2 can adopt twelve high-strength prestressed concrete steel bars that diameter is ¢ 10.7, and its tensile strength is 1570Mpa, and non-prestressed reinforcing bar 1 can adopt eight HRB335 threaded steel with a root diameter of ¢12, non-prestressed steel bars 1 are bound longitudinally and evenly distributed on the inside of spiral bars 3 in two symmetrical fan-shaped tension areas with an included angle of 120 degrees on the pipe pile section.

Embodiment 3

[0034] Such as Figure 4 Shown, repeat embodiment 1, following difference is arranged: prestressed reinforcing bar 2 can adopt twelve high-strength prestressed concrete steel bars that diameter is ¢ 10.7, and its tensile strength is 1570Mpa, and non-prestressed reinforcing bar 1 can adopt ten Two HRB335 rebars with a diameter of ¢12, the non-prestressed steel bar 1 is bound longitudinally and evenly distributed in the inner side of the spiral bar 3 in a circular shape.

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Abstract

The invention discloses a horizontal force supporting pile and a production process thereof. The horizontal force supporting pile comprises concrete, a reinforcement cage and end boards fixed on two ends of the reinforcement cage, wherein the reinforcement cage consists of prestressed reinforcement, helical reinforcement and nonprestressed reinforcement; the prestressed reinforcement can be made of PC steel bars with high tensile strength; the nonprestressed reinforcement is arranged on the helical reinforcement in a tensile zone of a tubular pile, and is vertically bound on the helical reinforcement, and does not participate prestressed tension after the tubular pile is in die closing, thereby changing the defects that the prior tubular pile has poor anti-bending strength, brittle fracture and poor ductility, the tubular pile spreads fast after fracture, and the reinforcement in the tensile zone quickly yields and contracts until fracture, nearly the same of ultimate bending moment and cracking bending moment, and the like. The horizontal force supporting pile and the production process improve the whole performance of the tubular pile, and have the advantages of simple process, low cost, high cost performance, wide application range and the like.

Description

Technical field: [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a horizontal force bearing pile and a production process thereof. Background technique: [0002] In the process of building construction, pipe piles are used more and more widely. Prestressed concrete pipe piles use the method of pre-pressurization to indirectly increase the tensile strength of concrete, overcome the shortcomings of easy cracking of concrete, and delay the cracking of concrete components. Improve the crack resistance and stiffness of the components, and achieve the effect of saving steel bars and reducing self-weight. [0003] However, it is generally believed in engineering circles that the bending resistance of prestressed concrete pipe piles is poor, the damage is brittle failure, and the ductility is poor. It is not much different from the cracking bending moment. The main way to increase the cracking moment is to increase the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/58E02D5/30B28B21/68B28B21/60B28B21/92
Inventor 许景新
Owner JIANHUA CONSTR MATERIALS (JIANGSU) CO LTD
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