TOWER-SHAPED SUPPORTING STRUCTURE
The invention describes a tower-shaped supporting structure ( 1 ), at least portions of which are hollow, with a plurality of interconnected prestressed concrete elements ( 2, 4 ), each of the prestressed elements ( 2 ) having a plurality of elongate prestressing means ( 10 ), more particularly wires or stranded cables, the majority of which are guided into an adjacent prestressed concrete element ( 4 ) and anchored there under tensile stress, characterised in that the prestressing means ( 10 ) have at least at one end a form-fitting means and the prestressing means ( 10 ) in the adjacent prestressed element ( 4 ) are anchored via at least one end anchoring element ( 12 ), which is connected to the prestressing means ( 10 ) via the form-fitting means.
1 . A tower-shaped supporting structure, at least portions of which are hollow, comprising a plurality of interconnected prestressed concrete elements wherein
each of the prestressed concrete elements has a plurality of elongate prestressing elements, the majority of which are guided into an adjacent prestressed concrete element and anchored there under tensile stress,
characterized in that
the prestressing elements have at least at one end form-fitting and the prestressing elements are anchored in the adjacent prestressed concrete element via at least one end anchoring element which is connected to the prestressing elements via the form-fitting means.
2 . The tower-shaped supporting structure according to claim 1 , characterized in that the end anchoring elements are accessible from a cavity inside the tower-shaped supporting structure.
3 . The tower-shaped supporting structure according to claim 1 , characterized in that each of the end anchoring elements is supported in the concrete via a supporting element which is preferably embedded in the concrete.
4 . The tower-shaped supporting structure according to claim 1 , characterized in that at least sections of the prestressing elements are additionally anchored in the prestressed concrete element via a bonding compound.
5 . The tower-shaped supporting structure according to claim 4 , characterized in that the end anchoring elements have a through-hole for exit of the bonding compound.
6 . The tower-shaped supporting structure according to claim 1 , characterized in that the bond between the prestressing elements and the prestressed concrete elements is weakened or disrupted at least adjacent to a connection joint between prestressed concrete elements.
7 . The tower-shaped supporting structure according to claim 1 , characterized in that the prestressed concrete elements comprise insertion channels for insertion of prestressing elements of adjacent prestressed concrete elements, wherein the cross-section of the insertion channels increases in a direction opposite to the insertion direction of the prestressing elements.
8 . The tower-shaped supporting structure according to claim 1 , characterized in that the prestressed concrete elements are designed in a ring shape or ring segment shape.
9 . The tower-shaped supporting structure according to claim 1 , characterized in that the prestressing elements are arranged in the respective prestressed concrete elements in at least two layers.
10 . The tower-shaped supporting structure according to claim 1 , characterized in that at least one prestressed concrete element is connected to an adjacent steel tower section such that the majority of elongate prestressing elements are guided into the adjacent steel tower section and anchored there under tensile stress.
11 . The tower-shaped supporting structure according to claim 10 , characterized in that additional anchoring means are provided which are anchored in the prestressed concrete element in a form-fitting manner, guided to the adjacent steel tower section and anchored there under tensile stress.
12 . The tower-shaped supporting structure according to claim 10 , characterized in that the adjacent steel tower section comprises a concrete section comprising a concrete ring, through which the elongate prestressing elements and anchoring means are guided and which is also connected to the steel of the tower section in a form-fitting manner.
13 . A method for producing a tower-shaped supporting structure according to claim 1 , said method comprising the steps of:
producing prestressed concrete elements each having a plurality of elongate prestressing elements,
connecting a prestressed concrete element to an adjacent prestressed concrete element such that the majority of the prestressing elements of the prestressed concrete element are guided into the adjacent prestressed concrete element,
tensioning the prestressing elements guided into the adjacent prestressed concrete element, and
tightening the anchoring elements such that the prestressing elements are anchored in the adjacent prestressed concrete element under tensile stress.
14 . The method according to claim 13 , characterized in that the prestressed concrete elements are vertically cast in place and are made from self-compacting concrete.
15 . The method according to claim 14 , characterized in that the prestressed concrete elements are provided with a self-levelling compound on their upper side after the casting process.
16 . The tower-shaped supporting structure of claim 1 , characterized in that the elongate prestressing elements comprise wires or strands.
17 . The tower-shaped supporting structure of claim 1 , characterized in that at one end the form-fitting means comprise a thread.
18 . The method of claim 13 , characterized in that the elongate prestressing elements comprise wires or strands.