A post-tensioning system that is configured for use with concrete wind turbine foundation designs to post-tension the foundations and reduce the amount of reinforcement steel that is needed compared to conventional non-post-tensioned, steel reinforced concrete foundation designs. In the case of an inverted T gravity foundation, the post-tensioning system described herein reduces the amount of reinforcement steel that is required by 30-40 tons.
A solar panel system includes a plurality of solar panel assemblies arranged into an array having a plurality of rows and columns. A plurality of support cables are connected to the solar panel assemblies and that support the solar panel assemblies with support poles thereof in a vertical orientation. Support structures are disposed at the perimeter of the array and connected to ends of the support cables. The support structures include one or more pitch poles and/or one or more cable adjustment mechanisms.
A solar panel assembly where a solar panel(s) is mounted on a support pole that is pivotally attached to a footing. By adjusting the angle of the support pole relative to ground, the orientation of the solar panel can be changed in full-axis directions. A plurality of the solar panel assemblies can be arranged into an array of rows and columns. Each row includes a row support cable that is connected to each one of the solar panel assemblies in the row to simultaneously adjust an angle of each of the solar panels in the row. In addition, each column includes a column support cable that is connected to each one of the solar panel assemblies in the column which may be used to simultaneously adjust an angle of each of the solar panels in the column.
A solar panel assembly where a solar panel(s) is mounted on a support pole that is pivotally attached to a footing. By adjusting the angle of the support pole relative to ground, the orientation of the solar panel can be changed in full-axis directions. A plurality of the solar panel assemblies can be arranged into an array of rows and columns. Each row includes a row support cable that is connected to each one of the solar panel assemblies in the row to simultaneously adjust an angle of each of the solar panels in the row. In addition, each column includes a column support cable that is connected to each one of the solar panel assemblies in the column which may be used to simultaneously adjust an angle of each of the solar panels in the column.
H02S 20/32 - Structures de support mobiles ou réglables, p. ex. pour réglage de l’angle spécialement adaptées pour le suivi du soleil
H02S 20/10 - Structures de support directement fixées sur le sol
F24S 30/48 - Agencements pour mouvoir ou orienter des modules de collecteurs de chaleur solaire pour le déplacement en rotation avec trois axes de rotation ou plus ou avec de multiples degrés de liberté
F24S 25/10 - Agencement de montages ou de supports fixes pour des modules de collecteurs de chaleur solaire se dressant dans des directions opposées à la surface de support
F24S 30/00 - Agencements pour mouvoir ou orienter des modules de collecteurs de chaleur solaire
Concrete foundations for supporting towers and other structures under heavy cyclical loads are described. Some or all of the major concrete components, such as the beams and the hubs, that form the foundation are fabricated off-site and then transported to the intended use site for the foundation. The concrete components can be fabricated as pre-cast segments, sections, or pieces, with the pre-cast segments then being assembled in the field at the use site to form each component, and the components then being assembled together to form the foundation. In one embodiment, the beams used in the foundation may have a box-girder construction.
Concrete foundations for supporting towers and other structures under heavy cyclical loads are described. Some or all of the major concrete components, such as the beams and the hubs, that form the foundation are fabricated off-site and then transported to the intended use site for the foundation. The concrete components can be fabricated as pre-cast segments, sections, or pieces, with the pre-cast segments then being assembled in the field at the use site to form each component, and the components then being assembled together to form the foundation. In one embodiment, the beams used in the foundation may have a box-girder construction.
Concrete foundations for supporting towers and other structures under heavy cyclical loads are described. Some or all of the major concrete components, such as the beams and the hubs, that form the foundation are fabricated off-site and then transported to the intended use site for the foundation. The concrete components can be fabricated as pre-cast segments, sections, or pieces, with the pre-cast segments then being assembled in the field at the use site to form each component, and the components then being assembled together to form the foundation. In one embodiment, the beams used in the foundation may have a box-girder construction.
A foundation system for a tower, such as a wind turbine, includes a central hub assembly, a plurality of post-tensioned concrete beams, and an anchoring system associated with each beam. In use the foundation system is arranged so that the bottom surfaces of the concrete beams bear on soil and the anchoring is disposed within the soil. The beams can be inverted bulb-T beams having post-tensioning cables inserted there-through and cooperating with an oppositely disposed related beam. The central hub assembly can include a plurality of stacked disk elements or steel frame elements that are post-tensioned together to form a single hub structure.
E04C 5/08 - Éléments spécialement adaptés pour être utilisés dans des constructions précontraintes
E02D 27/42 - Fondations pour poteaux, mâts ou cheminées
E04B 1/24 - Structures comportant des éléments porteurs allongés, p. ex. colonnes, poutres, ossatures les pièces porteuses étant métalliques
E04B 1/22 - Structures comportant des éléments porteurs allongés, p. ex. colonnes, poutres, ossatures les pièces porteuses étant en béton, p. ex. en béton armé, ou en un autre matériau pierreux les pièces étant précontraintes
E04B 1/21 - Liaisons spécialement adaptées aux dites pièces porteuses
A foundation system for a tower, such as a wind turbine, includes a central hub assembly, a plurality of post-tensioned concrete beams, and an anchoring system associated with each beam. In use the foundation system is arranged so that the bottom surfaces of the concrete beams bear on soil and the anchoring is disposed within the soil. The beams can be inverted bulb-T beams having post-tensioning cables inserted there-through and cooperating with an oppositely disposed related beam. The central hub assembly can include a plurality of stacked disk elements or steel frame elements that are post-tensioned together to form a single hub structure.
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