Deepwater suction type barrel-shaped foundation intermittent penetration equipment and installation method

A suction barrel-shaped foundation and barrel-shaped foundation technology, which is applied in basic structure engineering, caisson, construction, etc., can solve problems such as liquefaction instability and soil damage, and achieve the effects of inhibiting development, improving sealing, and improving installation quality.

Inactive Publication Date: 2015-09-23
ZHEJIANG UNIV
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Problems solved by technology

[0006] According to a large number of practical engineering experience and research results, when the internal suction force continuously applied exceeds the maximum design allowable suction force, it is likely to cause damage to the soil in the cylinder or liquefaction instability, and the excessive soil plug will rise rapidly in a short time

Method used

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  • Deepwater suction type barrel-shaped foundation intermittent penetration equipment and installation method
  • Deepwater suction type barrel-shaped foundation intermittent penetration equipment and installation method
  • Deepwater suction type barrel-shaped foundation intermittent penetration equipment and installation method

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Embodiment Construction

[0033] Refer to attached figure 1 to attach Figure 4 . The process of utilizing the present invention to install the suction barrel foundation is described as follows:

[0034] 1) During the on-site installation, firstly, the offshore engineering installation ship 4 transports the suction barrel foundation 1 to the designated installation location. The negative pressure tank body has parts that cooperate with the bolts 9 or nuts. The shaped foundation 1 is mechanically connected by bolts 9, the anchor chain 3 is connected with the anchor eye 10 on the suction barrel foundation 1, and the suction barrel foundation is hoisted downward from the buoy box 5 and dropped to the seabed. After the suction barrel foundation is embedded into the seabed to a certain depth under the action of its own weight and sealed, the pumping installation begins.

[0035]2) The mechanical connection between the buoyancy tank 5 and the suction barrel-shaped foundation is mainly connected by the st...

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Abstract

The invention provides deepwater suction type barrel-shaped foundation intermittent penetration equipment and an installation method. A suction type barrel-shaped foundation is mechanically connected with a negative-pressure tank; and the negative-pressure tank can serve as a carrier of such installation equipment as a submersible pump, a sensor and electronic equipment to overcome limitations of a deepwater environment to installation conditions. The equipment in the negative-pressure tank allows to control applied suction in an intermittent form, so that the disturbance to a seabed soil mass can be effectively reduced under the condition of not prolonging the installation time, the development of a soil plug in a suction type barrel-shaped foundation is restrained, and the installation quality is improved.

Description

technical field [0001] The invention relates to installation equipment and an installation method of a suction bucket foundation, in particular to sinking equipment and an installation method of a suction bucket foundation in deep water. Background technique [0002] The key target of exploration and development of global oil and gas resources in the 21st century is in the ocean, and 44% of the total oil and gas reserves in the future will come from the deep water area of ​​the ocean. The South China Sea is rich in oil and gas reserves, and is currently an important frontier for my country's oil and gas development, as well as a hot spot for deep-sea resource development. [0003] The suction barrel foundation is a large cylindrical thin-walled steel structure with an open bottom and a closed top with a water outlet. It has the characteristics of accurate positioning, low cost, convenient construction, and reusability. It is the most widely used foundation type in engineeri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D23/08E02D27/52
Inventor 国振沈侃敏
Owner ZHEJIANG UNIV
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