Foundation base for mounting wind turbines in an aquatic bed and method for manufacturing said foundation

Abstract

The invention relates to a foundation base for mounting wind turbines in an aquatic bed and a method for manufacturing said foundation, formed by a conical structure which is made up of an assembly of columns ( 1 ) like generatrices, arranged between an upper apex core ( 2 ) and a lower annular footing ( 3 ), the constructive mounting of said assembly being carried out on an annular mold ( 8 ) which is arranged floating in the water, in which the annular footing ( 3 ) is formed, with the attachment thereon of the columns ( 1 ), which are held in the constructive formation of the structural assembly by means of a support jig ( 10 ).

1 . A foundation base for mounting wind turbines in an aquatic bed, of the type intended to be seated on the aquatic floor in the installation site, in order to place a wind turbine thereon, characterized in that it consists of a conical structure comprising an assembly of columns ( 1 ) like generatrices, arranged between an upper apex core ( 2 ) and a lower annular footing ( 3 ), determining a structural assembly in the form of a cage, with the upper ends of the columns ( 1 ) being secured with respect to the apex core ( 2 ), whereas the lower end thereof is introduced in the constructive formation of the annular footing ( 3 ). 
     
     
         2 . The foundation base for mounting wind turbines in an aquatic bed according to  claim 1 , characterized in that the apex core ( 2 ) is formed by a tubular element with an upper base ( 2 . 1 ) for the securing of the wind turbine to be supported with the foundation and a lower base ( 2 . 2 ) with respect to which the securing of the columns ( 1 ) is established. 
     
     
         3 . The foundation base for mounting wind turbines in an aquatic bed according to  claim 1 , characterized in that the footing ( 3 ) is formed by annular concrete block, with a circular or polygonal contour, with a metallic framework ( 3 . 1 ) in the inside, the lower end of the columns ( 1 ) being included in said concrete block, with fastenings for securing on the metallic framework ( 3 . 1 ). 
     
     
         4 . The foundation base for mounting wind turbines in an aquatic bed according to  claim 1 , characterized in that the columns ( 1 ) have threaded rods in the upper end, by means of which the securing with respect to the base ( 2 . 2 ) of apex core ( 2 ) is established. 
     
     
         5 . The foundation base for mounting wind turbines in an aquatic bed according to  claim 1 , characterized in that the columns ( 1 ) have hooks ( 1 . 2 ) in the lower end, by means of which the fastenings for securing on the metallic framework ( 3 . 1 ) of the footing ( 3 ) are established. 
     
     
         6 . The foundation base for mounting wind turbines in an aquatic bed according to  claim 1 , characterized in that the columns ( 1 ) have a polygonal section, for example a square triangular section, determining sharp edges allowing an ice breakup function of the structural assembly of the foundation. 
     
     
         7 . The foundation base for mounting wind turbines in an aquatic bed according to  claim 1 , characterized in that vertical tubes ( 6 ) are included in the constructive block of the footing ( 3 ) for the anchorage of the foundation by means of piles in the installation site. 
     
     
         8 . The foundation base for mounting wind turbines in an aquatic bed according to  claim 1 , characterized in that on the conical structure formed by the columns ( 1 ) there are arranged reinforcement rings ( 11 ) which are fixed on the mentioned columns ( 1 ), to prevent the buckling thereof. 
     
     
         9 . A method for manufacturing a foundation base for mounting wind turbines in an aquatic bed, determining a conical structure which is formed by an assembly of columns ( 1 ) like generatrices, arranged between an upper apex core ( 2 ) and a lower annular footing ( 3 ), characterized in that the constructive mounting is carried out on an annular mold ( 8 ), with a circular or polygonal contour, which is arranged floating in the water ( 9 ), on which there is incorporated a jig ( 10 ) consisting of a mast ( 10 . 1 ) and articulated radial arms ( 10 . 2 ) thereon, said jig ( 10 ) being included through the apex core ( 2 ) of formation of the foundation, with respect to which the columns ( 1 ) of formation of the conical structure are secured at the upper end, which columns are supported in the radial arms ( 10 . 1 ) of the jig ( 10 ), with the lower end thereof entering in the mold ( 8 ), in which the concreting of formation of the footing ( 3 ) is carried out, covering said lower end of the columns ( 1 ) with the constructive concrete. 
     
     
         10 . The method for manufacturing a foundation base for mounting wind turbines in an aquatic bed according to  claim 9 , characterized in that once the constructive formation of the foundation is carried out, the jig ( 10 ) is removed by means of the extraction thereof in a folded position through the apex core ( 2 ). 
     
     
         11 . The method for manufacturing a foundation base for mounting wind turbines in an aquatic bed according to  claim 9 , characterized in that the demolding with respect to the mold ( 8 ) is carried out by lifting the assembly of the foundation formed, such that the footing ( 3 ) comes out of said mold ( 8 ), which remains floating in the water ( 9 ).