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A wind turbine pier foundation and its construction method

A foundation and pier technology, applied in the field of foundation foundation in geotechnical engineering, can solve the problems of collapsibility of loess, insufficient lateral bearing capacity of soft soil, etc., and achieve short construction period, stability and settlement control performance guarantee, The effect of improving the bearing capacity

Active Publication Date: 2016-05-25
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fan pier foundation suitable for soft soil and collapsible loess areas, which can overcome the problems of insufficient lateral bearing capacity of soft soil and collapsible loess

Method used

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  • A wind turbine pier foundation and its construction method
  • A wind turbine pier foundation and its construction method
  • A wind turbine pier foundation and its construction method

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Embodiment Construction

[0020] Briefly describe the construction steps below in conjunction with the accompanying drawings, and specifically describe the present invention: figure 1 Among them, the components are: high-strength prestressed anchor rod 1; C40 concrete cap 2; C15 concrete retaining wall 3; inclined pile 4; inner corrugated pipe 5; cable line 6; backfill soil 7; anchor pile 8.

[0021] A fan pier foundation, including a central pier foundation, characterized in that anchor piles 8 are arranged at the bottom of the central pier foundation, several inclined piles 4 are arranged around the central pier foundation, and a C40 concrete cap 2 is arranged on the top of the central pier foundation. The steel bar at the top of the inclined pile 4 is connected with the steel bar of the C40 concrete cap 2, and the C40 concrete cap 2 and the inclined pile 4 are poured into one body. The center pier foundation includes an outer bellows and an inner bellows 5 arranged in the outer bellows. Concrete is ...

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Abstract

The invention relates to a fan pile pier foundation and a construction method thereof, and discloses a fan pile pier foundation, which comprises a center pier foundation. The fan pile pier foundation is characterized in that an anchor rod pile is arranged at the bottom part of the center pier foundation, 8-12 inclined piles are arranged around the center pier foundation, a concrete pile cap is arranged at the top part of the center pier foundation, a reinforced bar at the top part of each inclined pile is connected with a reinforced bar of the concrete pile cap, the concrete pile cap is cast together with the inclined piles, and a prestressed anchor rod is arranged in the center pier foundation. The fan pile pier foundation has the advantages that the problems of insufficient bearing capacity and loess collapsibility of soft soil are solved; at the premise of meeting the domestic standard requirements, the material is saved, the construction period is shortened, the whole safety, stability and settling control property are sufficiently guaranteed, and the higher practicality is realized for the ground foundation reinforcing and foundation design of wind power generators in eastern coastal areas and northwestern collapsibility loess areas of China.

Description

technical field [0001] The invention relates to the field of foundations in geotechnical engineering, in particular to a foundation reinforcement and foundation structure design for a wind power generating set, and in particular to a wind turbine pier foundation suitable for soft soil and collapsible loess areas. Background technique [0002] my country's eastern coastal areas and northwest regions are rich in wind energy resources. As a clean and renewable energy, wind energy will gradually become an important part of new energy in my country's sustainable development strategy. At present, wind power generation has the advantages of mature technology, outstanding commercial value and environmental benefits, and its development momentum is rapid. The above-ground part of the wind turbine is generally about 80 meters high, and a huge bending moment is generated during operation, which requires extremely high bearing capacity and anti-overturning stability of the foundation. O...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D27/12E02D27/44
CPCE02D27/16E02D27/425E02D27/44
Inventor 范益群王海峰徐海勇
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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