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Production process of prestress FRP-rib (fiber reinforce plastic-rib) concrete pipe pile

A technology of concrete pipe piles and manufacturing technology, which is applied in sheet pile walls, foundation structure engineering, construction, etc., can solve problems such as steel bar corrosion and pipe pile damage, and achieve strong bearing capacity, strong corrosion resistance, and novel manufacturing technology Effect

Active Publication Date: 2013-04-17
ZHEJIANG DONGXIN BUILD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when it is exposed to seawater or groundwater containing corrosive substances, under the action of humidity, temperature, carbon dioxide gas, and chloride ions, the gradual neutralization of concrete will corrode the steel bars, which will eventually lead to failure and destruction of pipe piles.

Method used

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  • Production process of prestress FRP-rib (fiber reinforce plastic-rib) concrete pipe pile
  • Production process of prestress FRP-rib (fiber reinforce plastic-rib) concrete pipe pile
  • Production process of prestress FRP-rib (fiber reinforce plastic-rib) concrete pipe pile

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] The manufacturing process of prestressed FRP reinforced concrete pipe pile comprises the following steps:

[0029] 1) Concrete production: freshly mixed concrete with a low slump of 4 to 5 cm is produced by a concrete forced mixer, and the concrete strength grade is not lower than C60 or C80;

[0030] 2) Fabrication of FRP cage skeleton: make FRP main reinforcement 1 and FRP stirrup 2 according to the required size, and use plastic, nylon rope or non-metal tension belt to bind the FRP main reinforcement and FRP stirrup, and the finished FRP cage The skeleton is similar in appearance to the traditional steel cage;

[0031] 3) Production of the end plate: the end plate 3 is circular, and several small holes 4 and several large holes 5 are evenly arranged on the end plate 3, among which the small holes 4 are holes for piercing the FRP main rib 1, and the large h...

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Abstract

The invention relates to a production process of a prestress FRP-rib (fiber reinforce plastic-rib) concrete pipe pile. The production process is characterized by comprising the following steps of 1) concrete production, 2) FRP-rib frame skeleton production, 3) end board production, 4)pulling board production, 5) sleeve anchoring, 6) installation of the FRP-rib frame skeleton, 7) concrete material distribution, 8) moulding, 9) prestress tension, 10) centrifugal processing, 11) maintenance and 12) demoulding. By creatively choosing the FRP-rib as a substitute of the pipe pile steel bar and utilizing a tension method applicable to the FRP-rib, structural durability is improved. Compared with common prestress pipe piles, the prestress FRP-rib pipe pile has higher corrosion resistance; while compared with a FRP rib pile, the prestress FRP-rib concrete pipe pile has the advantages of high strength and high bearing capacity. Besides, with novel production process of reasonably utilizing a FRP-rib tension process on a pipe pile, and good effects are achieved.

Description

technical field [0001] The invention relates to a manufacturing process of a prestressed FRP reinforced concrete pipe pile. Background technique [0002] With the development of social construction, various new pile structures have been widely used in our country. Among them, prestressed concrete pipe piles are widely used in large-scale constructions such as high-rise buildings, railways, and ports due to their excellent quality, high strength, high bearing capacity, and strong penetration capacity. However, when it is exposed to seawater or groundwater containing corrosive substances, under the action of humidity, temperature, carbon dioxide gas, and chloride ions, the gradual neutralization of concrete will cause steel bars to corrode, and eventually lead to failure and destruction of pipe piles. Contents of the invention [0003] Aiming at the problems existing in the prior art, the object of the present invention is to provide a technical solution for the manufacturi...

Claims

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Application Information

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IPC IPC(8): E02D5/58E02D5/30
Inventor 徐森跃吴忠良陈浩潘威斌金强
Owner ZHEJIANG DONGXIN BUILD
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