Height-adjustable modular prestress fan foundation and construction method thereof

A wind turbine foundation and prestressing technology, which is applied in basic structure engineering, construction, etc., can solve problems such as large amount of foundation earthwork and cast-in-place concrete, water and soil conservation, large environmental impact, and non-recyclable and reused wind turbine foundation, etc., to achieve Quick and convenient lifting and installation, shortened construction period and high degree of mechanized operation

Pending Publication Date: 2021-01-05
YELLOW RIVER ENG CONSULTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional wind turbine foundations include rib beam foundations, extended foundations, anchor rod foundations, etc. The binding of steel bars is complicated and time-consuming, the formwork support is complicated, and the construction quality and progress are difficult to guarantee; , the environmental impact is relatively large; thirdly, when building wind farms in tidal flat areas, flood control issues need to be considered, but the foundation of traditional wind turbines cannot meet the flood control requirements; After the operation period of the farm is over, the foundation of the fan cannot be recycled and reused, resulting in a large waste of resources

Method used

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  • Height-adjustable modular prestress fan foundation and construction method thereof
  • Height-adjustable modular prestress fan foundation and construction method thereof
  • Height-adjustable modular prestress fan foundation and construction method thereof

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Experimental program
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Effect test

Embodiment 1

[0038] Such as Figure 1-3 As shown, the height-adjustable modular prestressed fan foundation of the present invention includes eight assembled units (the number can be adjusted according to the specific situation), the above-mentioned assembled units have the same structure, and they are spliced ​​sequentially along the horizontal direction and connected through horizontal The fastening connection between the parts and the prestressed locking components constitutes a hollow closed ring structure. Each of the above-mentioned assembled units is composed of a central part and a flange part extending outside the central part. The central part is higher, and its top is used to install the fan (that is, the fan cap), and the flange part is to increase the central part. At the same time, it can also be assembled, positioned and fastened by setting up relevant mechanisms on the flange.

[0039] Specifically, the flange portion of each assembly unit includes a bottom plate 1.1 extend...

Embodiment 2

[0044] In order to deal with the flood control problem, simplify the construction and reduce the investment cost, the center part is prefabricated into two parts, that is, the fixed section 6.1 which is located at the lower part and the flange part is connected together and the height adjustment section 6.2 which is prefabricated separately at the upper part. Usually, the number of the height-adjusting section 6.2 and the fixed section 6.1 are the same. It is also possible to reduce the number of divisions of the height-adjusting section 6.2 while meeting the splicing requirements and keeping the splicing structure and the locking structure unchanged. Volume prefabrication to reduce the workload of prefabrication and hoisting. When assembling the height adjustment section 6.2 and the fixed section 6.1, the upper anchor plate 4.2 is located on the top surface of the height adjustment section 6.2, the lower anchor plate 4.3 is located on the bottom surface of the fixed section 6....

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Abstract

The invention discloses a height-adjustable modular prestress fan foundation. The foundation comprises a plurality of splicing units, a horizontal connecting piece and a prestress locking assembly. The splicing units are sequentially spliced in the horizontal direction to form a closed annular structure, and each splicing unit is composed of a center part and a flange part arranged at the outer side of the center part in an extending manner. The horizontal connecting piece comprises first fastening bolts, second fastening bolts and third fastening bolts, the first fastening bolts and the second fastening bolts are arranged at the center parts, the third fastening bolts are arranged at the flange parts, and the first fastening bolts, the second fastening bolts and the third fastening boltsare all used for connecting the adjacent splicing units; and the prestress locking assembly comprises longitudinal anchor rods arranged in the center parts, upper anchor plate arranged on the top faces of the center parts and lower anchor plates arranged on the bottom faces of the center parts, and the longitudinal anchor rods are connected with the upper anchor plates and the lower anchor platesin a fastened manner. All modules can be produced in batches through factory prefabrication and combined with field assembly, the construction speed is greatly increased, and the construction period is shortened; and the height of the center part can be flexibly adjusted according to construction requirements so as to meet flood control requirements of projects.

Description

technical field [0001] The invention relates to the technical field of tower foundations for wind power engines, in particular to a height-adjustable modularized prestressed wind turbine foundation and a construction method thereof. Background technique [0002] In recent years, with the continuous optimization and adjustment of the national energy structure, wind power generation in the field of new energy has been valued, coupled with the strong support of national policies in various aspects, domestic wind power has developed rapidly. Traditional wind turbine foundations include rib beam foundations, extended foundations, anchor rod foundations, etc. The binding of steel bars is complicated and time-consuming, the formwork support is complicated, and the construction quality and progress are difficult to guarantee; , the environmental impact is relatively large; thirdly, when building wind farms in tidal flat areas, flood control issues need to be considered, but the foun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/44
CPCE02D27/44
Inventor 许昌萧燕子侯欣欣吉晓红翟利军樊小发张洪星梁春光杜媛杰陈飞野
Owner YELLOW RIVER ENG CONSULTING
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