The invention relates to a guiding device for assembling towers and/or foundations for wind turbines, intended to enable and/or facilitate relative movement between a mobile element and a support element, at least one of said elements being a section and/or part of the shaft of a wind turbine tower or foundation. The guiding device comprises: sliding means that are in contact with the mobile element and allow the relative movement thereof with respect to the guiding device; securing means that connect the guiding device to the support element; and means for geometric adaptation disposed between the sliding means and the securing means, which allow load transmission between the sliding means and the securing means while at the same time also allowing relative movement between the two.

The invention is a wind turbine tower and method of erection. The wind turbine tower comprises a plurality of support columns coupled to a wind turbine tower base, a lift deck coupled to the plurality of support columns configured to traverse a central longitudinal axis of the wind turbine tower, and a nacelle housing assembly coupled to the top of the plurality of support columns. The plurality of support columns spans a height of at least 85 meters may and in some embodiments are constructed of individual column segments transported and assembled via a small crane supported by the lift deck.

A method of modular pole construction an elongate modular pole structure is disclosed. A first step of the method involves providing hollow pole section modules, each module having an elongated structure with a base end and an opposed tip end. The modules are stacked to form an elongated modular pole structure of a selected length by mating the tip end of a base module with the base end of an additional module. One or more than one of the modules forming the elongated modular pole structure comprise a composite material having fire resistant properties

A method of modular pole construction an elongate modular pole structure is disclosed. A first step of the method involves providing hollow pole section modules, each module having an elongated structure with a base end and an opposed tip end. The modules are stacked to form an elongated modular pole structure of a selected length by mating the tip end of a base module with the base end of an additional module. One or more than one of the modules forming the elongated modular pole structure comprise a composite material having fire resistant properties

A method and apparatus for constructing a tower, where the apparatus may include a structure including a foundation including a plurality of hydraulic cylinders; a truss tower located on the foundation and configured to support a tower built on the foundation; and a controller configured to control extension and retraction of the hydraulic cylinders.

A method and apparatus for constructing a tower, where the apparatus may include a structure including a foundation including a plurality of hydraulic cylinders; a truss tower located on the foundation and configured to support a tower built on the foundation; and a controller configured to control extension and retraction of the hydraulic cylinders.

A flange element for a flange connection with a longitudinal centre axis A includes a flange part and an attachment part. The flange part has a front side with a front surface. The attachment part is adapted for secure attachment to a tubular element comprising a tower section of the tower structure for a wind turbine or a pipe element that is part of an offshare load bearing structure. The flange part is arranged radially on the inside of the flange element and is provided with a flange wedge. The flange wedge includes a flange wedge surface that is part of the front surface, and a flange heel including a flange heel surface that is part of the front surface. The flange wedge surface makes a wedge surface angle 1 and the flange heel surface makes a heel surface angle with a plane P that is perpendicular to the longitudinal centre axis A of the flange element.

A flange element for a flange connection with a longitudinal centre axis A includes a flange part and an attachment part. The flange part has a front side with a front surface. The attachment part is adapted for secure attachment to a tubular element comprising a tower section of the tower structure for a wind turbine or a pipe element that is part of an offshare load bearing structure. The flange part is arranged radially on the inside of the flange element and is provided with a flange wedge. The flange wedge includes a flange wedge surface that is part of the front surface, and a flange heel including a flange heel surface that is part of the front surface. The flange wedge surface makes a wedge surface angle 1 and the flange heel surface makes a heel surface angle with a plane P that is perpendicular to the longitudinal centre axis A of the flange element.

A wind turbine foundation comprising a concrete support slab having a horizontal rebar grid therein, a concrete pedestal integral with the support slab and having vertical post tensioning elements therein and a plurality of concrete ribs on top of and integral with the support slab and integral with the pedestal, the ribs having rebar therein and extend outwardly from the pedestal, the pedestal, slab and ribs are connected to each other to form a monolithic foundation. The foundation design reduces the weight and volume of materials used, reduces cost, and improves heat dissipation conditions during construction by having a small ratio of concrete mass to surface area thus eliminating the risk of thermal cracking due to heat of hydration.

A land-based drilling rig includes a first substructure and a second substructure, the second substructure being positioned generally parallel to the first substructure. The land-based drilling rig also includes a drill rig floor coupled to the first and second substructures, the drill rig floor including a V-door. The side of the drill rig floor has the V-door defining a V-door side of the drill rig floor, where the V-door side of the drill rig floor is parallel to the first substructure. The first and second substructures pivotably support the drill rig floor. The land-based drilling rig also includes a mast, the mast mechanically coupled to one or more of the first substructure, the second substructure, and the drill rig floor. The mast is pivotably coupled to one or more of the first substructure, the second substructure, and the drill rig floor by a mast pivot point. The mast includes a V-door side, the V-door side of the mast parallel to the first or second substructure. In addition, the land-based drilling rig includes a mast hydraulic lift cylinder coupled to the mast at a mast lift point and a choke manifold, the choke manifold positioned on the drill rig floor.