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Compound bucket foundation with skirtboard and construction method thereof

A cylindrical foundation and composite technology, which is applied in basic structure engineering, construction and other directions, can solve the problems of limited ability to resist seabed scouring and high cost, and achieve the effect of reducing the height of soil plugs, lowering the cost and improving the penetration force.

Inactive Publication Date: 2017-05-31
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These foundations usually require large-scale equipment for transportation and installation, resulting in high costs for construction in sea areas, and the above-mentioned foundations have limited ability to resist seabed erosion

Method used

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  • Compound bucket foundation with skirtboard and construction method thereof
  • Compound bucket foundation with skirtboard and construction method thereof
  • Compound bucket foundation with skirtboard and construction method thereof

Examples

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Embodiment Construction

[0032] 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:

[0033] Such as Figure 1 to Figure 3 As shown, this embodiment provides a composite tubular foundation with apron, which is mainly composed of reinforced concrete transition section 1, reinforced concrete roof 2, and steel tubular structure 4.

[0034] The steel cylindrical structure 4 has a diameter of 10-50m and a wall thickness of 10-100mm. The outer edge of the top cover of the steel cylindrical structure 4 expands out of the cylindrical foundation side wall 7, and the diameter of the top cover of the steel cylindrical structure 4 is 1.2 to 2 times the diameter of the bottom annular cylinder wall. The outer edge of the top cover of the steel cylindrical structure 4 is welded with a steel skirt plate 3 extending downward from the top cove...

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Abstract

The invention belongs to the field of offshore wind power foundations and discloses a compound bucket foundation with a skirtboard and a construction method thereof. The foundation comprises a steel bucket structure, a reinforced concrete top cover and a reinforced concrete transitional section; the outer edge of the top cover of the steel bucket structure is expanded out of the steel bucket structure and a steel skirtboard is welded; the lower portion of the reinforced concrete top cover is connected to the steel bucket structure through a shearing force nail and the upper portion is in pouring connection to the reinforced concrete transitional section. The construction method comprises the following steps: performing self-weight submerging and negative pressure submerging successively till the bottom of the steel skirtboard enters a seabed; and then extracting water through a water extraction pipe on the inner wall of the steel skirtboard to increase the sinking force of the compound bucket foundation. The foundation provided by the invention is simple in structure, convenient to construct and low in cost, and self-floating towing and negative pressure sinking can be performed, and the skirtboard is additionally arranged, so that the antidumping and anti-erosion properties of the foundation in normal use can be enhanced. Moreover, the sinking force of the foundation is effectively improved, and meanwhile, soil plug development in the steel bucket foundation is reduced.

Description

technical field [0001] The invention belongs to the field of offshore wind power foundations, and in particular relates to a composite cylindrical foundation for offshore wind power and a construction method thereof. Background technique [0002] At present, in offshore equipment projects such as offshore wind power projects, the foundation structure usually includes: monopile, tripod, jacket foundation, gravity foundation, negative pressure cylinder foundation and floating platform structure. These foundations generally require large-scale equipment for transportation and installation, resulting in high costs for construction in sea areas, and the ability of the above foundations to resist seabed erosion is limited. [0003] Offshore foundation structures are often faced with the scouring effect of reciprocating ocean currents, and scouring has a certain degree of influence on the bearing capacity of foundation structures. Therefore, how to improve the conventional composi...

Claims

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Application Information

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IPC IPC(8): E02D27/42E02D27/18E02D27/52
CPCE02D27/425E02D27/18
Inventor 郭耀华张浦阳丁红岩练继建
Owner TIANJIN UNIV
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