Method for sinking bucket foundation with force bearing ring structure

Abstract

The invention discloses a method for sinking a bucket foundation with a force bearing ring structure. The top of the bucket foundation is provided with a sealing top cover; the centre of the sealing top cover is provided with a reserved negative pressure hole and is connected with a negative pressure system; a reserved air infusion pipe is arranged outside the wall of the bucket foundation; the lower end outlet of the reserved air infusion pipe is positioned at the subfoundation on the lower part of the force bearing ring structure; and the upper end of the reserved air infusion pipe is connected with air infusion equipment on the surface of water. The method comprises the following implementation steps: 1) after the bucket foundation sinks in position by the self weight, starting the reserved air infusion pipe to continuously provide high-pressure air for the subfoundation on the lower part of the force bearing ring structure to ensure that a soil body is blown away and the bucket foundation sinks continuously; and 2) when the sink resistance of the bucket foundation exceeds a sink force provided by air injecting and ground breaking, pumping the negative pressure in the bucket foundation through the reserved negative pressure hole so as to ensure that the bucket foundation sinks continuously. The method has the characteristics of simple structure, simple and convenient construction, high efficiency and non-interference by sea conditions, and simultaneously, has the advantages of fast installation speed, low cost, strong safety and capability of realizing automatic monitoring operation in the sink process.

Description

Technical field [0001] The invention relates to a sinking method of a cylindrical foundation with a load-bearing ring structure, which belongs to the sinking construction technology of the cylindrical foundation in port, ocean, water conservancy and bridge engineering. Background technique [0002] At present, in port, ocean, water conservancy and bridge projects, during the sinking construction of the cylindrical foundation with bearing ring structure, due to the relatively large cross-section of the bearing ring structure, it brings great difficulties to the sinking of the cylindrical foundation. Subsidence construction by conventional methods is time-consuming and expensive. Contents of the invention [0003] The object of the present invention is to address the above existing problems and provide a sinking method for a cylindrical foundation with a load-bearing ring structure. The construction equipment using this method is simple, easy to operate, can increase the ins...

AI Technical Summary

Problems solved by technology

[0002] At present, in port, ocean, water conservancy and bridge projects, during the sinking construction of the cylindrical foundation with bearing ring structure, due to the relatively large cross-section of the bearing ring structure, it brings great difficulties to the sinking of the cylindrical foundation. Subsidence construction by conventional methods is time-consuming and expensive

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