Method for stopping water at joints between occlusive piles and diaphragm retaining wall

Abstract

The invention belongs to the technical field of construction engineering, and relates to a method for stopping water at the joints between occlusive piles and a diaphragm retaining wall. Occlusive pile concrete piles and occlusive pile plain concrete piles are arranged at intervals and are connected with each other in an occlusive manner to form the occlusive piles. The diaphragm retaining wall isconnected with the adjacent occlusive pile plain concrete piles in an occlusive manner, and steel flower tubes are welded to the diaphragm retaining wall and the portions, on the adjacent sides of the adjacent occlusive pile plain concrete piles, of a reinforcing bar cage. Grouting pipes are buried into the outer sides of the joints of the occlusive pile plain concrete piles and the diaphragm retaining wall. Jet grouting piles are arranged on the outer sides of the joints of the occlusive pile plain piles and the diaphragm retaining wall. Through the occlusion of the diaphragm retaining walland adjacent pile bodies, the steel flower tubes are buried between a diaphragm retaining wall body and the occlusive piles, the double rows of grouting pipes are arranged on the outer sides of the joints of the diaphragm retaining wall and the occlusive piles, and jet grouting pile reinforcing is carried out on the outer sides of the occlusive piles and the diaphragm retaining wall; and by usingthe series of structure and measures, the problem of water stop at the joints of the occlusive piles and the diaphragm retaining wall is solved, the waterproof performance and leakage-proof performance of the joints are improved, and the stability and safety of a foundation pit are improved.

Description

Technical field: [0001] The invention belongs to the technical field of construction engineering, and relates to a water-stopping method 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 str...

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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