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Production process of short tubular piles

A production process and short tube technology, which is applied in the field of prestressed high-strength concrete pipe pile production technology, can solve the problems of lack of pipe pile production technology, and achieve the effect of low production cost and high efficiency

Active Publication Date: 2010-02-10
湖北天利建筑技术有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, there are many specifications of pipe piles, pipe piles are divided into 300mm, 350mm, 400mm, 450mm, 500mm, 550mm, 600mm, 800mm, 1000mm according to the outer diameter, and the length is 7-16m; but there is a lack of pipe piles (or anchor rods) shorter than 3 meters. Pile) and its production process

Method used

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  • Production process of short tubular piles
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  • Production process of short tubular piles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The production technology of short pipe pile (two meters long, the pipe pile of diameter 300mm), it comprises the following steps:

[0031] 1) Prepare high-performance concrete (using existing known technology): high-performance concrete includes cement, admixtures, coarse aggregate (such as gravel), fine aggregate (such as sand), and water reducing agent (high-efficiency water reducing agent) and water; use PO52.5 cement 420kg, admixture 80kg, water 160kg, crushed stone 1093kg, sand 750kg, water reducer 27kg for each cubic meter of concrete; select various raw materials; cement, admixture, coarse aggregate, fine Aggregate, water reducing agent and water are mixed and stirred to obtain high-performance concrete. The admixture is Class II fly ash, and Class II fly ash that meets the requirements of the national standard can be used. The function of the water reducer is to reduce the amount of water without affecting the workability of the concrete and increase the streng...

Embodiment 2

[0042] It is basically the same as Example 1, except that the high-performance concrete adopts other existing known compositions and proportions (that is, the existing high-performance concrete is applicable to the present invention).

Embodiment 3

[0044] It is basically the same as embodiment 1, and the difference is that the 2-meter-long reinforcement cage is changed into a 1-meter-long reinforcement cage, and the mold is selected from an existing 15-meter-long mold; 8 1-meter-long reinforcement cages with pile heads are made of 7 connecting devices are connected into one; finally, 8 sections of 1-meter-long short pipe piles are obtained.

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Abstract

The invention relates to a production process of prestressed high-strength concrete tubular piles. The production process of short tubular piles is characterized by comprising the following steps: 1,preparing high-performance concrete; 2, manufacturing a steel reinforcement cage with pile heads: firstly welding the steel reinforcement cage with the length of 1-3 meters through steel reinforcements, then respectively welding collar plates at both end parts of the steel reinforcement cage, and welding end plates on the collar plates to obtain the steel reinforcement cage with the pile heads andthe length of 1-3 meters; 3, connecting the steel reinforcement cage with the pile heads and the length of 1-3 meters into a whole by adopting a connecting device to obtain the conjoined steel reinforcement cage with the pile heads; 4, putting the conjoined steel reinforcement cage with the pile heads into a mould; 5, distributing materials; 6. then carrying out longitudinal tension; 6, putting the tensioned pile mould with the materials on a centrifuge for centrifugal forming; 7, putting the centrifugalized pile mould with the materials into a steam maintenance pool for steam maintenance; and 8, stripping after steam maintenance; then removing the connecting device; and obtaining a multisection tubular pile with the length of 1-3 meters. The production process has the characteristics ofhigh efficiency and low production cost.

Description

technical field [0001] The invention relates to a production process of prestressed high-strength concrete pipe piles. Background technique [0002] Pretensioned Spun High Strength Concrete Pile (Pretensioned Spun High Strength Concrete Pile), also known as PHC pile, is a new type of industrialized prefabricated pile. It is a slender hollow ring-shaped prefabricated concrete member with equal cross-section produced by pre-tensioning, pre-stressing, centrifugal forming and high-pressure steam curing in the prefabrication plant. [0003] Application Status of PHC Pipe Pile: In 1992, my country formulated the national standard "Pretensioned Prestressed Concrete Pipe Pile" GB13476-92. Since 1993, the Ministry of Construction has included "high-strength prestressed concrete pipe piles" as a key promotion project. In 1995, relevant scientific research, design, pipe pile factories and construction units were organized to compile the "Technical Regulations for Prestressed Concrete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B21/62B28B21/68
Inventor 袁奕李树清汪贵平袁内镇
Owner 湖北天利建筑技术有限责任公司
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