The method of making large lateral opening of large section pipe jacking

Abstract

The invention discloses a construction method for opening of a lateral large hole in a large-section jacking pipe. Two or more steel pipe sections are connected successively in the longitudinal direction to form an open-hole type jacking pipe piece structure in a jacking pipe working well, and after the adjacent steel pipe sections are connected and fastened through bolt components, a continuous hole is opened in the lateral faces of at least two steel pipe sections. The open-hole type jacking pipe piece structure is formed by successive connection of the steel pipe sections in the jacking pipe working well, and accordingly the hoisting difficulty and the requirement for the hoisting site can be reduced, and the size of the working well is reduced. Structural strength at joints is guaranteed so that holes large in size can be opened in the two or more steel pipe sections and at the joints of the steel pipe sections, and the situations of heavy pipe pieces, difficulties in hoisting and deviation rectifying and the like caused by opening of the large hole in the same reinforced concrete pipe piece are prevented. The construction method can be applied to jacking pipe construction.

Description

technical field [0001] The invention relates to the technical field of large-section pipe jacking, in particular to a method for laterally opening large holes in large-section pipe jacking. Background technique [0002] When building municipal pipelines in cities, smaller diameter pipe jacking methods are often used for construction. In recent years, with the development of cities, the application of large-section pipe jacking has become more and more extensive, such as urban underground pedestrian passages, urban underground power tunnels, and urban underground comprehensive pipe corridors. [0003] With the diversified development of the city, some buildings (structures) need to be connected laterally with the pipe-jacking section, such as the lateral connection between the pipe-jacking underground pedestrian passage and the basement of surrounding properties or the entrance of the subway passage, and the pipe-jacking underground comprehensive pipe gallery Lateral access ...

AI Technical Summary

Problems solved by technology

However, when the size of the required large-section pipe jacking opening is relatively large, if an integral reinforced concrete segment is used, the segment will have a long longitudinal length, a huge body, and heavy weight, which poses a threat to the hoisting and installation of the segment. The transportation and site bring great troubles, and the long reinforced concrete segment is difficult to correct, which will affect the later use. size, increase project cost

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