Underground Diaphragm Wall Joint Waterproof Structure and Its Construction Method

Abstract

The invention belongs to the technical field of construction and particularly relates to a waterproof structure for an underground diaphragm wall joint and a construction method thereof. The waterproof structure comprises a first underground diaphragm wall and a second underground diaphragm wall, wherein the first underground diaphragm wall and the second underground diaphragm wall mutually intersect. The end portion, connected with the first underground diaphragm wall, of the second underground diaphragm wall is provided with a straight bending section. The bending section extends to the outer side of a pit and leans on the first underground diaphragm wall. The portion, extending to the inner side of the pit, of the second underground diaphragm wall is provided with a single row of three-shaft stirring piles continuously extending in the length direction of the wall. The portion, extending to the outer side of the pit, of the second underground diaphragm wall is provided with a plurality of rows of parallel three-shaft stirring pile sets continuously extending in the length direction of the wall. The joint portion between the bending section of the second underground diaphragm wall and the first underground diaphragm wall is provided with a plurality of high-pressure jet grouting piles used for sealing. The waterproof structure has a plurality of bending points, is good in anti-permeability effect, and has the advantages of less construction difficulty, convenient operation, low manufacturing cost and the like.

Description

technical field

[0001] The invention belongs to the technical field of building construction, and in particular relates to an underground continuous wall joint waterproof structure and a construction method thereof. Background technique

[0002] The underground diaphragm wall has the characteristics of high structural rigidity, integrity, impermeability and durability, and can be used as a permanent soil and water retaining and load-bearing structure; it can adapt to various complex construction environments and hydrogeological conditions There is basically no noise and no vibration during the construction of existing buildings, and the impact on adjacent buildings and underground pipelines is small; underground walls of various depths, widths and shapes can be built. Due to a series of advantages, the underground diaphragm wall is more and more widely used in urban subways and deep foundation projects.

[0003] However, for construction sites with complex geological condit...

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