Waterstop structure at junctions of occlusive piles and diaphragm wall

Abstract

The invention belongs to the technical field of construction engineering and relates to a waterstop structure at the junctions of occlusive piles and a diaphragm wall. Occlusive pile concrete piles and occlusive pile plain piles are arranged alternately and are occluded mutually to form the occlusive piles. The diaphragm wall is occluded with the adjacent occlusive pile plain pile. Steel floral tubes are welded to a reinforcement cage on the side adjacent to the diaphragm wall and the adjacent occluded occlusive pile plain pile. Grouting tubes are buried on the outer side of the junctions between the occlusive pile plain piles and the diaphragm wall. Jet grouting piles are arranged on the outer side of the junctions between the occlusive pile plain piles and the diaphragm wall. Through a series of structures and measures that the diaphragm wall is occluded with the adjacent occlusive pile plain pile, the steel floral tubes are buried between a wall body of the diaphragm wall and the occlusive piles, the two rows of the grouting tubes are driven on the outer side of the junctions between the diaphragm wall and the occlusive piles and the jet grouting piles are arranged on the outerside of the occlusive piles and the diaphragm wall, the problem existing in waterstop at the junctions between the occlusive piles and the diaphragm wall is solved, the waterproof and anti-leaking properties of the junctions are improved, and the stability and safety of the foundation pit are enhanced.

Description

Technical field: [0001] The invention belongs to the technical field of construction engineering, and relates to a water-stop structure at the joint between an occlusal pile and an underground continuous wall of a foundation pit support structure. Background technique: [0002] With more and more subway projects in our country, all kinds of buildings around the foundation pits of urban subways are dense, the surrounding environment and water and land geological conditions are complex, and the construction is difficult. It is necessary to explore new foundation pit support methods. [0003] At present, the foundation pit support forms commonly used in subway engineering include occlusal piles and underground diaphragm walls. The occlusal pile refers to the foundation pit support structure formed by the interlocking of reinforced concrete piles and plain piles between the adjacent piles in the row of piles arranged in the plane, which is used as the foundation pit support stru...

AI Technical Summary

Problems solved by technology

However, the problem of water-stopping at the joints between the occlusal piles and the underground diaphragm wall is a major and difficult point. Once water leakage occurs at the joints between the occlusal piles and the underground diaphragm wall, not only is it very difficult to stop the leakage, but it will also affect the foundation pit and the surrounding environment safety

At present, there is no effective system construction method

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