US 12,168,872 B2
Three-dimensional helicoidal post-tensioning and reinforcement strategy for concrete anchor applications
Rick Damiani, Arvada, CO (US); and Max Franchi, Pescara (IT)
Assigned to The Floating Wind Technology Company, LLC, Arvada, CO (US)
Filed by RRD Engineering LLC, Arvada, CO (US)
Filed on Oct. 5, 2021, as Appl. No. 17/494,810.
Claims priority of provisional application 63/087,477, filed on Oct. 5, 2020.
Prior Publication US 2022/0106020 A1, Apr. 7, 2022
Int. Cl. E04C 5/12 (2006.01); B28B 1/02 (2006.01); B63B 21/27 (2006.01)
CPC E04C 5/122 (2013.01) [B28B 1/02 (2013.01); B63B 21/27 (2013.01)] 17 Claims
OG exemplary drawing
 
17. A concrete suction anchor including a cylindrical structure that has a lateral cylindrical wall and a longitudinal axis, wherein the cylindrical structure is open at a bottom end and closed at a top end, wherein the cylindrical structure defines a main cavity open at the bottom end, wherein said lateral cylindrical wall of the cylindrical structure includes a plurality of internal channels housing at least one pair of sets of post-tensioning tendons, wherein a first set of post-tensioning tendons is inclined with respect to said longitudinal axis by a first angle opposite to a second angle according to which a second set of post-tensioning tendons is inclined with respect to said longitudinal axis, wherein each of said first and second angles has an absolute value larger than 0° and lower than 90°; and
wherein said top end of the cylindrical structure is closed by a top dome defining a top internal buoyancy chamber separated from the main cavity, wherein an internal vent puts the main cavity in fluid communication with the top internal buoyancy chamber.