Reinforced Concrete Pipe Jacking Joints

Abstract

The invention relates to the technical field of ejection pipes of non-excavation works, in particular to a reinforced concrete ejection pipe joint connector. The connector is positioned at a connection between a front pipe joint and a rear pipe joint which are adjacent. The connection part of the connector at least comprises a pipe joint outer wall sealing connecting part and a pipe joint inner wall sealing connecting part. The pipe joint outer wall sealing connecting part at least comprises a socket steel bushing ring positioned at the rear end of the front pipe joint and a socket steel ringpositioned at the front end of the rear pipe joint. The pipe joint inner wall sealing connecting part at least comprises the structure that steel bushing rings separately arranged on the front pipe joint inner wall and the rear pipe joint inner wall. Each steel bushing ring at least comprises an annular steel ring and an annular slab. Ribbed plates and bolted holes are uniformly distributed on thefront side and the rear side of the slab. The ribbed plate and the bolted holes are staggered mutually in position. The bolted holes in the front pipe joint slab are corresponding to those of the rear pipe joint slab. The bolted holes corresponding to one another are connected by bolts and nuts. The pipe joint connector adopting the technical scheme can completely meet the need of projects with high waterproof requirements, and can adapt to complex construction environments such as high water pressure and soft ground.

Description

technical field [0001] The invention relates to the technical field of trenchless engineering pipe jacking, in particular to reinforced concrete pipe jacking joint joints. Background technique [0002] In recent years, with the acceleration of social modernization, trenchless technology, especially pipe jacking technology, has been rapidly promoted and applied. Pipe jacking technology is widely used in the field of municipal engineering, in which electric power pipe jacking is used for the underground laying of cables, mainly large-diameter reinforced concrete pipes, and the interface form is mainly F-shaped steel sockets. Electric pipe jacking construction has high requirements on the waterproof performance of pipe joints, but in many engineering projects, water leakage occurs in pipe joints. Especially in weak formations with high water pressure, traditional wedge-shaped rubber rings or O-rings cannot withstand sufficient water pressure to achieve a complete sealing effec...

AI Technical Summary

Problems solved by technology

Electric pipe jacking construction has high requirements on the waterproof performance of pipe joints, but in many engineering projects, pipe joints leak water.

Especially in weak formations with high water pressure, traditional wedge-shaped rubber rings or O-rings cannot withstand sufficient water pressure to achieve a complete sealing effect. wedge rubber ring

In addition, due to the uneven settlement of the pipeline, on the one hand, it is easy to cause the uneven pressure of the sealing rubber ring, which weakens its sealing effect; Ring deformation hinders pipe joint jacking construction

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