Deep sea combined cylinder foundation structure and construction method thereof

A basic structure and combined cylinder technology, applied in ship parts, ships, floating buildings, etc., can solve the problems of poor permeability, low strength, strong structure, etc., and achieve the effects of convenient transportation, low construction difficulty, and reasonable geometric dimensions.

Pending Publication Date: 2021-05-14
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These characteristics determine that the seabed soil in the deep water area of ​​the South China Sea has different mechanical properties from those in the near-shallow sea. It is

Method used

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  • Deep sea combined cylinder foundation structure and construction method thereof
  • Deep sea combined cylinder foundation structure and construction method thereof
  • Deep sea combined cylinder foundation structure and construction method thereof

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] A construction method for a deep-sea composite barrel foundation structure is carried out according to the following steps:

[0023] Step S1, hoisting the completed suction cylinder foundation 6, positioning steel pipe 15 and other necessary equipment onto the transport ship, fixing them, and transporting them to the construction sea area.

[0024] Step S2, according to the height of the suction cylindrical foundation 6, determine the anchorage height of the connecting plate 12 connected to the longitudinal rib 11 on the positioning steel pipe 15, and use high-strength bolts 14 to sequential...

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Abstract

The invention belongs to the technical field of anchoring structures in ocean engineering, and relates to a deep sea combined cylinder foundation structure and a construction method thereof. The combined cylinder foundation form comprises three suction type cylinder foundations, wherein the three suction type cylinder foundations are distributed in a triangular shape, the distance between the cylinder foundations is larger than 1.5 times of the cylinder diameter, and the cylinder foundations are converged at a certain height in a deep sea through a flexible anchor chain; the matched construction and installation device comprises a positioning steel pipe, a connecting plate and an underwater robot. The construction and installation method comprises the steps of connection of an offshore cylinder type foundation and an auxiliary installation device, overall putting into mud, real-time orientation monitoring, negative pressure installation of the cylinder type foundation and recovery of the auxiliary installation device. The overall bearing performance of the foundation can be improved and increased, the anchor group effect of the combined cylinder foundation can be brought into play to a greater extent, the combined cylinder foundation is suitable for deeper and worse marine environments, the geometric dimension of the suction type cylinder foundation tends to be more reasonable, the weight is lighter, the construction difficulty is lower, the transportation is more convenient, and the installation and recycling construction difficulty is reduced.

Description

technical field [0001] The invention belongs to the technical field of foundation structures of marine engineering, and in particular relates to a novel suction combined cylinder foundation anchoring type for a deep-sea oil and gas exploitation platform and a deep-sea oil storage device. Background technique [0002] In recent years, the development and utilization of marine resources has gradually moved towards the deep sea. With the development of deep-sea floating platforms, traditional drag anchors, gravity anchors and driven piles have technical difficulties in deep-water installation and cable-stay resistance. Due to poor mooring performance and other reasons, the traditional foundation type is restricted by environmental and other factors and cannot meet its anchoring requirements. Compared with the traditional foundation type, the suction cylinder foundation has been used as an excellent foundation due to its advantages of fast installation speed, low construction co...

Claims

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Application Information

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IPC IPC(8): B63B75/00B63B35/44B63B21/50
CPCB63B21/50B63B35/44B63B75/00
Inventor 王胤李佳康王康杰张世兴亓振
Owner DALIAN UNIV OF TECH
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