Pipe jacking pipe joint retaining device

Abstract

The invention discloses a pipe jacking pipe joint retaining device, which comprises a machine frame, wherein the machine frame is arranged between a back jacking jack and a pipe joint to be jacked; first connecting elements are respectively arranged at two sides of the pipe joint to be jacked; the machine frame is provided with a reaction frame at each of two sides of the pipe joint to be jacked; and second connecting elements corresponding to the first connecting elements are arranged on the reaction frames. The pipe jacking pipe joint retaining device has the advantages that before the pipe jacking stopping and back jacking jack retraction, the backward retreating of a pipe jacking machine head and the pipe joint in a passage after the back jacking jack retraction is prevented by a reaction system of the reaction frames through the mutual connection coordination of the first connecting elements arranged at the two sides of the pipe joint and the second connecting elements arranged on the reaction frames. The defects of the pipe jacking pipe joint releasing construction are overcome; the backward retreating phenomenon of the pipe jacking machine head and the pipe joint after the main jacking jack retraction in the pipe jacking construction is reasonably and effectively controlled; and the stability of a pipe jacking front side soil body and the safety of a pipeline and a front soil body are ensured.

Description

technical field [0001] The invention relates to the field of tunnel engineering construction, in particular to a device for preventing the retreat of pipe jacking pipe joints. Background technique [0002] The pipe jacking tunnel construction technology has been widely used in urban underground highways, pedestrian passages, water supply and drainage pipelines and other tunnel projects due to its large-scale equipment and the promotion of rectangular pipe jacking equipment. However, due to the particularity of the pipe jacking construction process: after completing the jacking of a pipe section, the jack must be retracted before the next pipe section is hoisted into the well. The pipe jacking head and the pipe joint will retreat 20-30cm together, which will cause the soil pressure balance between the pipe jacking head and the soil in front to be destroyed, which will easily cause the soil in front of the pipe jacking head to collapse, resulting in the settlement of the road ...

AI Technical Summary

Problems solved by technology

[0009] 1) Rebar tie rods need to be welded and cut repeatedly, and the material consumption is large, which affects the progress of the project;

[0010] 2) The welding quality of the tie rod is not good enough, it is easy to break, and in severe cases, it will cause engineering accidents;

[0011] 3) When the soil pressure on the front of the pipe jacking is high, there is a risk of pulling out the steel door, causing engineering accidents;

[0012] 4) The construction period is greatly affected by the weather

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