Air curtain sunk shaft foundation and construction method thereof

A foundation construction and air curtain technology, applied in the direction of foundation structure engineering, caissons, buildings, etc., can solve the problems of cumbersome auxiliary work, poor rectification effect of sinking, and caisson loses the best rectification state, so as to ensure normal use Effect
CN101078218AActive Publication Date: 2007-11-28CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
Publication Date
2007-11-28

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Abstract

The invention relates to a foundation for air curtain caisson and the construction method, belonging to the bridge foundation construction technology field. Air curtain caisson makes use of pipes pre-buried in caisson wall and air shrine on external wall to apply high-pressure air to peripheral circumstance so that frictional resistance between caisson wall and soil is decreased and the caisson sinks smoothly. The construction method for foundation of air curtain caisson comprises casting caisson in segment and in place, sucking mud and sinking, height addition, air curtain sinking, caisson absorbing mud and sinking, caisson rectification technology, clearing foundation, and closing bottom so on. The invention is suitable for construction of caisson foundation with all kinds of usage, especially sand formation and clayey stratum with certain water content. The construction method for foundation of air curtain caisson can be used on bank and on water. It can not be constrained by water depth.
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Description

technical field

[0001] The invention relates to an air curtain caisson foundation and a construction method thereof, belonging to the technical field of bridge foundation construction.

[0002] The air curtain caisson is to apply high-pressure air to the surroundings by using the pipelines pre-buried in the well wall and the air niche on the outer wall to reduce the friction between the well wall and the soil and make the caisson sink smoothly. The air curtain caisson foundation construction method is suitable for caisson foundation construction for various purposes, especially for sandy soil and cohesive soil layers with relatively high groundwater levels. The construction method of the air curtain caisson foundation can be on the shore or on the water, and is not limited by the water depth. Background technique

[0003] In soft soil foundations such as sandy soil and cohesive soil layer, caisson is a safe and reliable structure to improve the bearing capacity of the found...

Claims

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