Patent ID: 9394035
Filing Date: 2016-07-19
CPC Classification: B63B,F03D,F05B,Y02E,Y02P,Y10T

Claim Text:
1. A semisubmersible wind turbine platform capable of floating on a body of water and supporting a wind turbine, the wind turbine platform comprising: a vertical center column; and three or more vertical outer columns spaced radially from the center column, each of the outer columns being connected to the center column with: wherein, the center column and outer columns are made of concrete and are buoyant with sufficient buoyancy to support a wind turbine tower; wherein the outer columns are not connected to each other by substantial structural perimeter linkages; wherein the bottom beams, top beams and struts include post-tensioning reinforcements, causing precompression in the concrete between the outer columns and the center column; wherein the center and outer columns include post-tensioning reinforcements, causing vertical precompression in the concrete; wherein the bottom beams are connected to the central column with a bottom keystone at the central column, with the bottom keystone having circumferentially spaced connection faces for connection of the bottom beams to the keystone; wherein the post-tensioning reinforcements for the bottom beams are anchored in the bottom keystone; wherein the top beams are connected to the central column with a top keystone at the central column, with the top keystone having circumferentially spaced connection faces for connection of the top beams to the keystone; and wherein the post-tensioning reinforcements for the top beams are anchored in the top keystone.