Method for one-pile-three-use in underground engineering

Abstract

The invention relates to a three-purpose method for one pile in underground engineering. Its essence is a technology for combining temporary enclosure structures and permanent structures in underground engineering, and the temporary enclosure pile wall can be used as an enclosure during the construction stage of underground engineering. It will not be scrapped after the protection function, but will also play the role of the surrounding permanent engineering piles (pressure bearing or anti-floating) after the completion of the underground engineering construction; at the same time, it will also serve as a component of the external wall of the underground engineering, and jointly bear the horizontal lateral pressure and The pressure of civil air defense plays the role of "one pile with three purposes" in this way. The beneficial effects of the invention are as follows: 1) The traditional temporary enclosure engineering piles that need to be discarded can also be used as surrounding engineering piles and components of the basement exterior wall, so as to play a permanent role and greatly save engineering investment. 2) It has the advantages of simple construction, simple construction machinery, low cost and strong applicability. 3) The enclosure piles are constructed close to the outer wall of the underground project, which solves the problem that the enclosure piles cannot be implemented due to site restrictions in the old city.

Description

technical field [0001] The invention relates to a construction method for underground engineering, in particular to a method for three uses of one pile in underground engineering. Background technique [0002] The foundation pit enclosure of underground engineering is a difficult and high-investment project, which is a temporary auxiliary structure and will be scrapped after the construction of the underground engineering is completed. In addition, in urban underground projects, it is often impossible to construct enclosure piles at a certain distance from the outer wall of the underground project due to the limitations of the surrounding sites. At present, the temporary underground diaphragm wall used for enclosure is also used as the permanent exterior wall of underground engineering in large-scale underground engineering at present, which is called "two walls in one" technology, but its construction is complicated and the cost is very high. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] The foundation pit enclosure of underground engineering is a difficult and high-investment project. It is a temporary auxiliary structure and will be scrapped after the construction of the underground engineering is completed.

In addition, in urban underground projects, often due to the limitations of the surrounding sites, it is impossible to construct enclosure piles at a certain distance from the outer wall of the underground project.

At present, in large-scale underground projects, the temporary underground diaphragm wall used for enclosure is also used as the permanent exterior wall of underground projects, which is called "two walls in one" technology, but its construction is complicated and the cost is high

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