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One-stage prestressed concrete pipe

A concrete pipe and prestressing technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve problems such as water leakage, rubber ring slippage at the pipe socket, and poor adaptability, so as to ensure the overall quality and reduce Construction cost, easy counterpart effect

Inactive Publication Date: 2011-03-30
TIANJIN ZEBAO CEMENT PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pipe mouth of such an angle joint has poor adaptability to the uneven settlement of the foundation. If it is laid on a soft ground, the pipe foundation must be prepared well, otherwise the rubber ring at the pipe socket will slip due to uneven settlement of the foundation and cause water leakage

Method used

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  • One-stage prestressed concrete pipe
  • One-stage prestressed concrete pipe

Examples

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Comparison scheme
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Embodiment Construction

[0011] As shown in the figure: the one-stage prestressed concrete pipe (YYG) is a prefabricated prefabricated concrete pipe with two-way prestressed in the concrete pipe wall, which is prepared by vibratory extrusion process of concrete 1, circumferential prestressed steel bar 2 and longitudinal prestressed steel bar 3 Concrete pipe body 4. Its socket 5 is arranged on the left side of concrete pipe body 4, and socket 6 is arranged on the right side of concrete pipe body 4, and pipe socket and socket joint are sealed with a circular solid rubber sealing ring 7 during installation.

[0012] Shorten the length a of the outer slope of the socket by 20mm, that is, 30mm for DN400~1600, 40mm for DN1800~2000, and grind to a smooth level; shorten the length b of the socket face of the first-stage prestressed concrete pipe (YYG) Increase the value to more than 100mm, and grind it to the level of smoothness; increase the total depth c value of the first-stage prestressed concrete pipe (Y...

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Abstract

The invention discloses a one-stage prestressed concrete pipe. A socket is formed on the left of the pipe body, and a jack is formed on the right of the pipe body. The one-stage prestressed concrete pipe is characterized in that: the length of an inverted slope outside the socket is shortened by 20mm, so that the length of the socket working face is more than or equal to 100mm; and the total depth of the socket is increased by 10mm. The allowable relative rotation angle of a pipe joint can be increased, the construction efficiency is improved, the construction cost is reduced, the capacity of the pipe of resisting nonuniform settlement of foundation is improved, the integral quality of pipeline projects is ensured, the maintenance cost for the utilities pipelines is reduced, and the service life of the whole pipeline is prolonged.

Description

technical field [0001] The invention relates to a prestressed concrete pipe, in particular to a one-stage prestressed concrete pipe. Background technique [0002] One-stage prestressed concrete pipe (YYG) is a non-metallic pipe successfully trial-produced in the mid-1960s in my country. Because of its simple processing technology and low cost (only 60% of steel pipe), it is widely used in urban water supply and drainage, long-distance water delivery, farmland irrigation and various water conservancy projects. According to the national standard "Prestressed Concrete Pipe (GB5696-2006)" of the People's Republic of China, the first-stage prestressed concrete pipe (YYG) adopts a socket-type interface with a circular rubber seal ring, and the pipes of different pressure levels from DN400 to 1600 The length and size of the socket and the socket are exactly the same, only the diameter of the ring and the diameter of the apron used are different. The pipes with different pressure g...

Claims

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Application Information

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IPC IPC(8): F16L9/08F16L25/10
Inventor 王明泽郭俊贵
Owner TIANJIN ZEBAO CEMENT PROD
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