Water-stopping method at joint between occlusal pile and ground connecting wall

Abstract

The invention belongs to the technical field of construction engineering, and relates to a water-stopping method at the joint of an occlusal pile and an underground continuous wall. The occlusal piles and the occlusal piles are arranged at intervals and interlocked to form an occlusal pile. The ground connection wall and the adjacent occlusal piles The plain pile is occluded, the steel flower tube is welded on the steel cage on the adjacent side of the ground connection wall and the adjacent occlusal pile plain pile, the grouting pipe is buried outside the joint between the occlusal pile plain pile and the ground connection wall, and the rotary grouting pile is installed on the occlusion The outer side of the joint between the plain pile and the ground connection wall is occluded with the adjacent pile body through the ground connection wall, steel flower pipes are buried between the ground connection wall wall and the occlusal pile, and double-row grout is placed outside the joint between the ground connection wall and the occlusal pile. A series of structures and measures such as the grout pipe, and the rotary grouting pile reinforcement on the outside of the occlusal pile and the ground connection wall have solved the problem of water-stopping at the joint between the occlusal pile and the underground diaphragm wall, and improved the waterproof and anti-leakage performance of the joint. Enhance the stability and safety of the foundation pit.

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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