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Cylindrical structure and pile group combined type offshore wind turbine foundation

A combined, wind turbine technology, applied in infrastructure engineering, construction, etc., can solve problems such as pushing up offshore construction costs, increasing project construction periods, and high construction costs, reducing offshore construction time, strong vertical force, The effect of less steel consumption

Inactive Publication Date: 2013-03-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A longer construction period will push up the cost of offshore construction and increase the construction period of the entire project
The tripod foundation is a kind of jacket foundation, and the construction cost is usually relatively high
Because it belongs to the shallow foundation type, this type of foundation is more suitable in low seismic intensity areas, but in high seismic intensity areas, earthquake liquefaction may affect its safety

Method used

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  • Cylindrical structure and pile group combined type offshore wind turbine foundation
  • Cylindrical structure and pile group combined type offshore wind turbine foundation

Examples

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Embodiment Construction

[0012] 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:

[0013] see Figure 1 ~ Figure 2 , a combined wind turbine foundation with a cylindrical structure and pile groups, including a polygonal or concrete roof 3 arranged on its top, the concrete roof 3 is closely connected with the cylindrical steel wall 1; the cylindrical steel wall 1 is equipped with multiple A sub-compartment panel 2 arranged in a honeycomb shape, a prestressed connecting section 8 perpendicular to it is provided at the center of the concrete roof 3, and a plurality of radially arranged concrete roofs 3 are arranged around the prestressed connecting section 8 Prestressed beams 4, all prestressed beams 4 are evenly distributed on the periphery of prestressed connecting section 8, and connecting beams 5 are arranged between two a...

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Abstract

The invention discloses a cylindrical structure and pile group combined type offshore wind turbine foundation, comprising a cylindrical steel wall and a concrete top cover arranged at the top of the cylindrical steel wall, wherein a plurality of radially-arranged pre-stress beams, a plurality of connection beams and a pre-stress connection section are cast on the concrete top cover; the pre-stress connection section is vertically arranged at the center of the concrete top cover; the pre-stress beams are uniformly arranged around the rim of the pre-stress connection section along the circumference of the pre-stress connection section; the connection beam is arranged between each two pre-stress beams; a guide pipe is pre-embedded at the middle part of each connection beam; steel pipe piles infiltrated into the foundation are arranged inside the guide pipes; and the steel pipe piles and the guide pipes are poured with high-strength mortar. The cylindrical structure and pile group combined type offshore wind turbine foundation provided by the invention not only has the advantages of strong horizontal force resistance and vertical force resistance of a cylindrical foundation, but also has the advantage of good foundation liquefaction of a pile foundation. Meanwhile, with the adoption of the structure, the onshore scale prefabrication and the offshore floating transportation of a cylindrical structure can be realized; and the offshore construction time and the construction difficulty can be reduced. Therefore, the wind turbine foundation has very high economical benefits.

Description

technical field [0001] The invention relates to an offshore wind power foundation type, which is developed on the basis of traditional single-pile and multi-pile foundations, and is a new type of foundation structure type for offshore wind turbines that combines a composite cylindrical structure with group piles. Background technique [0002] Nowadays, the global energy is becoming increasingly tense, and wind energy, as a green, clean and renewable energy, has been favored by energy developers in various countries. According to statistics, the total amount of wind energy that can be developed in the world is about 20 billion kW, which is ten times the total amount of hydropower that can be developed. In recent years, wind power has developed rapidly, and its market is growing at a rate of 40% every year. It is estimated that by 2020, the total installed capacity of wind power in the world will reach 1.26 billion kW, accounting for 12% of the world's total demand. Compared ...

Claims

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Application Information

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IPC IPC(8): E02D27/44E02D27/42
Inventor 练继建王海军丁红岩燕翔
Owner TIANJIN UNIV
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