Footing for wind turbine towers

Abstract

Footing used for the foundation of a wind turbine tower characterized because it provides a stable horizontal platform ( 1 ) located at the surface, upon which the tower sections and the heavy elements that are subsequently mounted, viz., gearbox, generator, hub and blades, can be set without sinking. The footing is characterized by its inverted truncated cone shape, and by the savings in material estimated at 20%, as well as for its union with the tower ( 4 ) through a pedestal ( 3 ) and its corresponding embedded tensioning elements in the footing.

1 . Footing for a wind turbine tower characterized by being furnished with:
 an upper horizontal part ( 1 ) extending radially from the axis ( 2 ) and passing through the center of the tower for a distance L,   a second lower part in the shape of an inverted truncated cone having a height H and forming a single piece without internal gaps, completely compacted   and lastly, both parts remain connected by the setting of their constituent material.   
     
     
         2 . Footing for a wind turbine tower according to the first claim, characterized because the upper horizontal surface ( 1 ) determines a circle or polyhedron shape of more than two sides. 
     
     
         3 . Footing for a wind turbine tower according to the first claim, characterized because the material composing the footing is concrete poured into a rebar structure supported by the prepared terrain. 
     
     
         4 . Footing for a wind turbine tower according to the first claim, characterized because the distance L can vary between 7.5 and 15 meters while the height H can have values between 1.5 and 5 meters. 
     
     
         5 . Footing for a wind turbine tower according to the first claim, characterized because the foundation is covered with a layer of earth ( 6 ) which is compacted once the construction process has been completed. 
     
     
         6 . Footing for a wind turbine tower according to the first claim, characterized because the connection with the first section of the tower ( 8 ) is made with a pedestal ( 3 ) by some bars ( 7 ) embedded in the footing.