A kind of butt joint construction method of FRP sand pipe

Abstract

The invention provides a construction method for butt jointing of FRP sand-filled pipes. Grouting hole, the grouting hole extends to the outer peripheral surface of the sleeve pipe, insert two FRP sand pipes with the same outer diameter into the sleeve pipe from the left and right ends of the sleeve pipe to make them dock in the sleeve pipe, and then through the filling The grout hole is filled with an appropriate amount of sealing mortar, and the construction is completed after the sealing mortar is condensed. Adopting the technical scheme of the present invention, the FRP sand-filled pipe has the advantages of light weight, smooth inner wall surface, and strong corrosion resistance. By using sealing mortar for sealing, the sealing operation of the butt joint construction of the FRP sand-filled pipe is simplified, and the construction efficiency is improved. , compared with the prior art, it reduces the processing accuracy requirements for the corresponding seals in the butt joint construction, the sealing mortar is not easy to be damaged after being condensed, has a long service life, and improves the sealing effect.

Description

technical field [0001] The invention relates to the technical field of pipelines, in particular to a construction method for butt jointing of FRP sand-filled pipes. Background technique [0002] In the construction of municipal engineering, there are many ways to connect pipelines. At present, the common method of butt connection of FRP pipes with sand inclusions is double O-ring socket connection, that is, through the socket method, the extrusion of double O-shaped rubber seal rings is used. Elastic deformation occurs, causing contact pressure on the sealing contact surface to achieve a sealed connection. This method often causes different degrees of leakage due to damage to the sealing ring on the edge of the socket, too small compression ratio of the sealing ring, aging of the sealing ring, etc. During construction, due to insufficient ellipticity of the socket, installation is difficult, a large number of air bubbles are generated, and it is difficult to install. Guaran...

AI Technical Summary

Problems solved by technology

This method often causes different degrees of leakage due to damage to the sealing ring on the edge of the socket, too small compression ratio of the sealing ring, aging of the sealing ring, etc. During construction, due to insufficient ellipticity of the socket, installation is difficult, a large number of air bubbles are generated, and it is difficult to install. Guarantee the construction quality of the joints, seriously affecting the progress of the project

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