Wind power generation tower prestress anchor bolt cage

Abstract

The invention relates to a wind power generation tower prestress anchor bolt cage which comprises an anchor bolt, an upper flange and a lower flange. The anchor bolt penetrates through an anchoring nut, the lower flange, a positioning nut, an anchor bolt casing pipe, an adjusting nut, the upper flange, a T-shaped flange at the bottom of a wind power generation tower and a locking nut in sequence. The upper flange is an annular steel plate, an anchor bolt hole is an inverted-cone hole, and the adjusting nut can support the upper flange and adjust the levelness of the upper flange; the lower flange is an annular steel plate, a lower flange support bolt and a support nut bear the weight of the lower flange and can adjust the levelness of the lower flange, the lower flange is fixed through a pressing nut, and the lower flange support bolt is supported on a base plate. According to the wind power generation tower prestress anchor bolt cage, the anchor bolt and foundation concrete are separated through the anchor bolt casting pipe, the anchor bolt applies pretension force, and the concrete is subjected to the stress; the position and levelness of the upper flange are adjusted through the adjusting nut; the inverted-cone hole of the upper flange enables the center area, the inner edge and the outer edge of the T-shaped flange at the bottom to be pressed against the upper flange more tightly, and the inverted-cone hole is filled with sealing materials. The wind power generation tower prestress anchor bolt cage enables the integrality of the connection of a tower frame and the foundation to be good, is even in rigidity, and improves durability and anti-fatigue performance of connection.

Description

technical field [0001] The invention belongs to the technical field of connection between a wind power generation tower and a foundation, and in particular relates to a prestressed anchor bolt cage of a wind power generation tower. Background technique [0002] The connection between the wind power tower and the foundation of the single-tube tower structure is generally realized by embedding the foundation ring in the reinforced concrete foundation, and flange connection between the tower and the foundation ring. The disadvantages of the foundation ring connecting the tower and the foundation are: the foundation ring isolates its internal and external reinforced concrete, the combination of the two is poor, and the integrity of the force is weak; Under the action of fatigue load, the concrete is often damaged, which makes the anchorage of the foundation ring invalid, affects the normal operation of the wind turbine, and even collapses the tower; both sides of the foundation ...

AI Technical Summary

Problems solved by technology

The disadvantages of the foundation ring connecting the tower and the foundation are: the foundation ring isolates its internal and external reinforced concrete, the combination of the two is poor, and the integrity of the force is weak; Under the action of fatigue load, the concrete is often damaged, which makes the anchorage of the foundation ring invalid, affects the normal operation of the wind turbine, and even causes the tower to collapse; more anchoring steel bars are required on both sides of the foundation ring, and the amount of steel is large, resulting in a large waste of materials

Images