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

Abstract

The present invention relates to a method of one pile for three applications in the underground engineering, in particular to a combination technology of a temporary enclosure structure and a permanent structure. The temporary enclosure structure can not be rejected after enclosure in the construction phase of the underground engineering, and plays a role in the surrounding permanent engineering pile (load bearing or floating resistance) after completion of the engineering; meanwhile, as a composition of an external wall of the underground engineering, the horizontal lateral pressure and the civil air pressure, one pile for three applications. The present invention has the beneficial effects that: (1) the temporary enclosure structure to be rejected in the traditional construction method plays a role in the surrounding engineering pile and the external wall of the basement for permanent use, which saves a lot of investment; (2) the present invention has the advantages of easy construction and construction machinery, low cost, high adaptability and etc. (3) the enclosure pile is constructed against the external wall of the underground engineering, which removes the difficulty of failure of the enclosure pile restricted by area in old urban areas.

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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