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
CN101994876AInactive Publication Date: 2011-03-30TIANJIN ZEBAO CEMENT PROD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TIANJIN ZEBAO CEMENT PROD
Publication Date
2011-03-30
Estimated Expiration
Not applicable · inactive patent

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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.
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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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