Large wall thickness foundation sinking method by combining diversion and negative pressure technology

A combined and basic technology, applied in the field of foundation sinking with large wall thickness, can solve the problems of large resistance and the inability to effectively sink the structure in place, so as to increase the installation speed, avoid the interference of environmental conditions, and simplify the sinking process Effect

Active Publication Date: 2010-06-02
JLANGSU DAODA OFFSHORE WIND CONSTR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for the structure type with large wall thickness, the resistance will be greater, and the traditional sinking method will not be able to satisfy the effective sinking of the structure in place

Method used

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  • Large wall thickness foundation sinking method by combining diversion and negative pressure technology
  • Large wall thickness foundation sinking method by combining diversion and negative pressure technology
  • Large wall thickness foundation sinking method by combining diversion and negative pressure technology

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Embodiment Construction

[0014] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0015] An embodiment of the present invention is as follows: a concrete cylindrical foundation with a diameter of 35m and a height of 15m, the thickness of the foundation wall 5 is 0.5m, and 12 vertical holes with a diameter of 0.3m are arranged at equal intervals along the perimeter on the foundation wall 5, that is, suction The mud pipe 3 and the air supply pipe and / or water supply pipe 4 (also known as the diversion pipe) with a diameter of 5 cm are placed in the middle of the mud suction pipe 3, and the hole of the mud suction pipe 3 is tapered to expand to a height at the bottom of the foundation wall 5 It is a cone cavity 6 of 0.5m, and a loose soil cavity 7 with a height of 0.5m formed by a partition plate 8 is connected below the botto...

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Abstract

The invention discloses a large wall thickness foundation sinking method by combining diversion and negative pressure technology. A diversion system of a wall of a foundation and a negative pressure system of a top cover of the foundation are combined; the diversion system of the wall of the foundation comprises vertical holes reserved at equal intervals along the circumference of the supporting wall; dredging pipes are arranged in the vertical holes; the middles of the dredging pipes are provided with diversion pipes; the bottom of the dredging pipes are provided with a trumpet-shaped conical cavity and a ripping cavity which is divided by clapboards arranged at the bottom of the vertical holes; in the negative pressure system of the top cover of the foundation, a negative pressure extracting hole is reserved on the sealed top cover; and the dredging pipes and the diversion pipes all penetrate the sealed top cover. The large wall thickness foundation sinking method has the advantages that: in a foundation sinking system by combining the diversion and negative pressure technology, by guiding seawater and applying negative pressure, the large wall thickness bucket foundation is sunk into various foundation soil bodies in economic expenditure; the sinking process is more simple; the installation speed is greatly improved; the interference of the environmental conditions can be avoided; and full automatic monitoring operation in the sinking process can be realized and the construction quality and safety are guaranteed.

Description

Technical field [0001] The invention relates to the large-wall-thickness foundation construction technology in port, ocean, water conservancy and bridge engineering, in particular to a large-wall-thickness foundation sinking method combined with diversion and negative pressure technology. Background technique [0002] At present, in port, ocean, water conservancy and bridge projects, large concrete cylindrical structures and large-wall thick cylindrical foundations are more and more widely used. At present, the large-scale cylindrical structures are sunk into the foundation soil, and the method that can be implemented There are mainly foundation pit excavation method with high cost, ballast method with limited scope of application, vibration method with high requirements on equipment, and sinking methods such as high-pressure jet and air suction and discharge. When a large cylindrical structure sinks, the resistance mainly comes from the friction and cohesion resistance of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D23/08
Inventor 练继建丁红岩张浦阳
Owner JLANGSU DAODA OFFSHORE WIND CONSTR TECH CO LTD
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