Hand-digging pipe-jacking butt joint connection structure and construction method thereof

Abstract

The invention discloses a hand-digging pipe-jacking butt joint connection structure. The hand-digging pipe-jacking butt joint connection structure comprises a prefabricated structure and a cast-in-place structure, wherein the prefabricated structure is positioned on a first pipe-jacking pipe segment; the cast-in-place structure is positioned in a butt joint middle part between pipe-jacking pipe segments on both sides; the cast-in-place structure comprises an omega steel plate, a water stop structure and structural concrete; the omega steel plate is closely attached to an inner side of the prefabricated structure; and the water stop structure is closely attached to a soil side of the prefabricated structure. The hand-digging pipe-jacking butt joint connection structure has the advantages ofrelatively high integrity and capability of preventing water leakage due to staggering during pipe jacking. The invention further discloses a construction method for the hand-digging pipe-jacking butt joint connection structure.

Description

technical field [0001] The invention relates to the technical field of civil engineering, and more specifically relates to a hand-digging type pipe jacking butt joint connection structure. The invention also relates to the construction method of the hand-excavated pipe jacking butt joint connection structure. Background technique [0002] In the field of civil engineering, pipe jacking technology is widely used, especially in areas where surface deformation needs to be controlled. Pipe jacking technology is divided into mechanical pipe jacking and hand digging pipe jacking. Among them, hand digging pipe jacking is widely promoted because of its simple equipment and low technical difficulty. [0003] Hand digging pipe jacking has great dependence on geological conditions. When the pipe jacking distance is long, the pipe jacking faces problems such as high pipe jacking resistance and difficult advancement. At this time, it needs to be jacked from both sides. After the top i...

AI Technical Summary

Problems solved by technology

After the top is in place, the remaining distance of about 1m is usually manually excavated and directly poured concrete to form a ring. At this time, the cast-in-place part and the pipe jacking joints on both sides are three independent entities, and the integrity is poor. The connection part of the middle butt joint is prone to misalignment, which will lead to problems such as water leakage

have an extremely adverse impact on subsequent operations

Images