Oblique skirt type suction foundation suitable for soft soil foundation

A technology of suction foundation and soft soil foundation, which is applied in infrastructure engineering, water conservancy projects, artificial islands, etc., can solve the problems of limited bearing capacity of foundation structures, achieve the effects of improving vertical bearing capacity, convenient construction, and reducing engineering costs

Inactive Publication Date: 2017-09-01
TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

In order to enhance the bearing capacity of the traditional suction foundation, Li Dayong and Li Shanshan added a straight skirt structure to the traditional suction foundation. The limitation of the skirt depth and skirt width of the skirt structure makes the bearing capacity of the foundation structure increased by the straight skirt structure limited

Method used

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  • Oblique skirt type suction foundation suitable for soft soil foundation
  • Oblique skirt type suction foundation suitable for soft soil foundation
  • Oblique skirt type suction foundation suitable for soft soil foundation

Examples

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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] see figure 1 , a kind of oblique skirt type suction foundation suitable for soft soil foundation, comprising a main barrel 2, a foundation top plate 1 fixed on the main barrel 2, and a skirt structure ring fixed on the outer edge of the foundation top plate, the skirt structure It is an oblique skirt structure 3, and the oblique skirt structure 3 is trumpet-shaped.

[0016] In this embodiment, the main barrel 2 adopts a cylindrical structure and is made of steel or reinforced concrete, which is convenient for construction and use. According to design calculations, it is found that the angle θ between the horn-shaped body of the inclined skirt structure 3 and the vertical is preferably 20°-30°. The lower end of the trumpet-shaped body...

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Abstract

The invention discloses an oblique skirt type suction foundation suitable for a soft soil foundation. The oblique skirt type suction foundation comprises a main bucket, a foundation top plate fixedly connected to the main bucket, and a skirt structure annularly fixed to the outer edge of the foundation top plate. The skirt structure is an oblique skirt structure, and the oblique skirt structure is in a horn shape. The horn-shaped oblique skirt structure is adopted, and when a structure object on the foundation is subjected to horizontal and vertical loads, the foundation area is increased in the vertical direction through a horn-shaped body of the oblique skirt structure, and therefore the vertical bearing force of the foundation is increased. Meanwhile, due to existence of the horn-shaped body of the oblique skirt structure, the uplift bearing force of the foundation is increased. The horn-shaped body of the oblique skirt structure generates the vertical pressure component under the action of the horizontal loads, accordingly, the horizontal bearing force of the foundation is increased, and therefore the vertical bearing force, the uplift bearing force and the horizontal bearing force of the suction foundation can be improved, and the safety coefficient of the suction foundation is improved; and meanwhile, construction is convenient, and the project cost can be reduced.

Description

technical field [0001] The invention belongs to the field of engineering structure foundation engineering, in particular to an oblique skirt type suction foundation suitable for soft ground. Background technique [0002] The suction foundation uses negative pressure for construction, which has the characteristics of convenient construction, fast construction speed, low cost and reusability. It is widely used in domestic offshore oil and gas platforms, such as the Chengbei CB20B offshore platform built in Shengli Oilfield in 1999. The platform uses a suction foundation; the JZ20-2 oil field in the South China Sea uses a single-point mooring suction anchor foundation; the wind measuring tower built in Changyi, Shandong in 2011 uses a large-diameter suction foundation. In large-scale engineering construction, whether the bearing capacity of the suction foundation (vertical bearing capacity, pull-out bearing capacity, and horizontal bearing capacity) meets the requirements is di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/52
CPCE02D27/525E02B2017/0078
Inventor 陈宇张宝华孙熙平李铁良
Owner TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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