Height-adjustable modular prestress fan foundation and construction method thereof

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...

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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

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