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US 10,538,936 B2Granted
Wind turbine tower made of prefabricated concrete parts in the shape of annular segments
AssigneeMax BöGl Wind AG
InventorsJosef Knitl, Stefan Bögl
Life of this patent
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Abstract
A tower for a wind turbine includes at least one tower section made of concrete, made up of several annular concrete segments arranged on top of one another with horizontal joints. Each concrete segment includes at least two annular segment prefabricated concrete parts arranged in parallel with vertical joints. The each have one outer side, one inner side and one upper, lower and two lateral contact faces. The concrete segments are connected to one another in the vertical direction by vertical clamping devices.
Claims19
A tower for a wind turbine comprising:
- at least one tower section of concrete with an inner wall which is pre-stressed with vertical tendons between a head bearing and a foot bearing, the tower section having an inner wall defining an interior of the tower section, the vertical tendons located completely radially inward of the cross-section in the interior and adjacent the inner wall, wherein the inner wall between the head bearing and the foot bearing has at least one adapted projection formed unitary with the tower section and on which at least one of the vertical tendons abuts an outermost surface of the projection.
A tower for a wind turbine comprising:
- at least one tower section having a plurality of annular concrete segments that define a central axis that is vertical, each annular concrete segment including at least two prefabricated concrete parts, each prefabricated concrete part having an outer side, an inner side, an upper contact face, a lower contact face, two lateral contact faces, and a center area between the two lateral contact faces, each prefabricated concrete part having a reinforcing element located only in the center area and embedded within the prefabricated concrete part, the annular concrete segments arranged in a vertical stack with a horizontal joint located between respective upper contact faces of the prefabricated concrete parts within one annular concrete segment and respective lower contact faces of the prefabricated concrete parts within an adjacent annular concrete segment, the prefabricated concrete parts within each annular concrete segment arranged with a vertical joint between the lateral contact faces of each adjacent pair of prefabricated concrete parts, each of the vertical joints within a given annular concrete segment being offset circumferentially relative to the central axis from the vertical joints within adjacent annular concrete segments so that the reinforcing element of each prefabricated concrete part in an annular concrete segment underlying another annular concrete segment underlies a vertical joint within the another annular concrete segment, the annular concrete segments being joined together in a direction along the central axis only by vertical clamping devices that create a load-bearing friction connection between the annular concrete segments.
Dependencies are inferred from the claim text.