Sealing joint used for connecting bamboo-like prestress plastic pipes and provided with plug boards

Abstract

The invention discloses a sealing joint used for connecting bamboo-like prestress plastic pipes and provided with plug boards. The sealing joint is formed through butt joint combination of a pair of semicircular pipes, the structures of the semicircular pipes are symmetric about the mirror image, and a clamping device is arranged on the edge of a butt joint face. The inner circle of each semicircular pipe is provided with two large annular grooves, two small annular grooves and sealing gasket grooves, wherein the two large annular grooves are formed in the two sides of the length middle point of the semicircular pipe; the two small annular grooves are formed in the outer sides of the two large annular grooves respectively; the two sides of each large annular groove are each provided with one sealing gasket groove. Sealing gaskets are arranged in the sealing gasket grooves. The sealing joint has the advantages that the elastic sealing gaskets tightly press the two sides of large annular ribs of the bamboo-like prestress plastic pipes, the sealing effect is good during vacuumizing construction, and compactness and fullness of vacuum prestress hole grout are facilitated; the plug boards are used for fastening and fixing the two bamboo-like prestress plastic pipes to achieve sealed connection, operation is easy and convenient, and performance is reliable.

Description

technical field [0001] The invention relates to a sealing joint of a plastic pipe in the construction of a prestressed steel strand, in particular to a sealing joint connecting a bamboo-shaped prestressed plastic pipe with an inserting plate. Background technique [0002] In recent years, with the development of the construction industry, prestressed concrete has been gradually promoted. Compared with traditional reinforced concrete, prestressed concrete has the advantages of high strength and material saving. Now the most advanced technology is vacuum grouting and post-tensioning prestressing. concrete technology. Its feature is to pour concrete first, embed metal pipes or plastic pipes in the concrete in advance, and then pull the prestressed steel strands in the pre-embedded metal pipes or plastic pipes after the concrete reaches a certain strength, and then use anchors to install the prestressed steel strands. The steel strands are fixed on the components, and finally a...

AI Technical Summary

Problems solved by technology

[0003] At present, bamboo-shaped prestressed plastic pipes are more advanced in pre-embedded pipe fittings. The bamboo-shaped prestressed plastic pipes have high strength and good quality. The way of adhesive tape is connected to each other. These connection methods are cumbersome to deal with, and the exhaust pipe cannot be installed, and the sealing effect is poor, and air leakage is easy to occur, which affects the density and fullness of the vacuum prestressed channel grouting.

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