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Offshore single-pile base structure and installation method thereof

A single-pile foundation and installation method technology, which is applied in foundation structure engineering, sheet pile walls, buildings, etc., can solve the problems of high cost, many pile legs, and long construction period, and achieve simple construction, material saving, and material saving Effect

Active Publication Date: 2010-08-25
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The jacket type has a high bearing capacity and a wide range of water depth applications, but the cost is high, and there are many pile legs, the offshore construction period is still a bit long, and there are certain problems in adapting to the harsh offshore climate

Method used

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  • Offshore single-pile base structure and installation method thereof
  • Offshore single-pile base structure and installation method thereof
  • Offshore single-pile base structure and installation method thereof

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] As shown in Figure 1, the main body of the single pile foundation structure of the present invention is a large-diameter (3m-6m) steel pipe pile 1. out of the water. A flange member 2 is welded at the upper end of the steel pipe pile 1 . As shown in FIG. 2 , the flange member 2 is composed of a flange 21 , a flange neck 22 and a boss 23 , wherein the boss 2 can be formed by the flange neck 22 itself. In the factory, the flange neck 22 is consolidated on the annular inner wall of the flange 21, and the upper part of the flange neck 22 protrudes from the flange 21 to form a boss 23; or the flange neck 22 and the flange 21 are pressed together The above form can be integrally forged as a whole.

[0023] The flange member 2 is welded on the steel pipe pile 1 through the flange neck 22, and the flange neck 22 can be welded on the inner wall of th...

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Abstract

The invention relates to an offshore single-pile base structure and an installation method thereof. The structure comprises a tubular pile, a flange component and an annular platform, wherein the flange component comprises a flange disc and a flange hub, the flange hub is arranged on the inner wall of the flange disc, the flange hub is welded on the upper end of the tubular pile, and the upper part of the flange hub which is exposed out of the tubular pile and the flange disc is used as a striking lug boss; and an annular component is arranged on the wall of the tubular pile, and the annular platform is connected with the annular component through a bolt. The installation method comprises the following steps: barge positioning, pile feeding, pile sinking, hoisting and hammer stopping, and is characterized in that the lower end of the pile is clamped by a pile clamping device when striking the pile, and the lug boss on the top part of the flange hub is struck by a striking hammer, so the flange and the tubular pile are free from being damaged. The offshore single-pile base structure is applicable to shallow water area and middle-deep water area, and has simple and rapid construction, low cost and strong adaptability.

Description

technical field [0001] The invention relates to an offshore pile foundation structure and an installation method thereof, in particular to a single pile foundation structure suitable for various marine engineering structures in shallow water areas, especially an offshore wind turbine and an installation method thereof. Background technique [0002] The design of marine engineering in shallow water areas, especially the foundation structure of offshore wind turbines, should consider the geological structure of the seabed, offshore distance, offshore wind, wave loads, ocean currents, ice, etc., and can be divided into gravity type and pile foundation type in terms of structural form. And barrel foundation, etc., among which the pile foundation structure is the most widely used. The pile foundation type is divided into the jacket type and the concrete cap type. The concrete cap type is generally used in the pier structure. Although the cost is low, it cannot overcome the influe...

Claims

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Application Information

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IPC IPC(8): E02D27/52E02D27/44E02D5/28E02D7/00E02D7/08
Inventor 尚景宏林伟明罗锐朱鹏
Owner CHINA NAT OFFSHORE OIL CORP
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