An assembly includes a first block including a first end; and a second block assembled with the first block at a same height as the first block, the second block including a second end facing the first end of the first block. The first block and the second block are connected to the assembly such that there is no structural connection between the second end of the second block facing the first end of the first block.

It is described an assembly for lifting pre-stressing cables for a pre-stressed concrete structure having ducts for pre-stressing cables, to be arranged on top of the concrete structure, comprising: (a) a rail 22 on which a hoist or pulley 30 is arranged, which has wheels, which allow hoist 30 to move along the rail 22; (b) a supporting structure 12, attached to rail 22; (c) a plurality of columns 14, which supports the supporting structure 12 of the rail 22, arranged at a certain distance from the rail; and (d) an hoists 30 having a chain 34 which is inserted into the vertical ducts 52 for the pre-stressing cables of the concrete structure, and uploads the wires to the top of the structure.

Various implementations comprise a method and apparatus for constructing a concrete structure in stages. In various implementations, an apparatus includes a base, a support column located on the base, and a movable scaffolding rotatably coupled to a top of the support column. According to various other implementations, a method for assembling a tower stage includes: (1) providing a base platform; (2) coupling a pole to the base platform; (3) disposing two or more staves around the pole; (4) coupling the staves together to form the tower stage; and (5) removing the tower stage from the platform.

A fatigue resistant gravity based spread footing under heavy multi-axial cyclical loading of a wind tower. The foundation having a central vertical pedestal, a substantially horizontal continuous bottom support slab, a plurality of radial reinforcing ribs extending radially outward from the pedestal. The pedestal, ribs and slab forming a continuous monolithic structure. The foundation having a three-dimensional network of post-tensioning elements that keep the structural elements under heavy multi-axial post compression with a specific eccentricity intended to reduce stress amplitudes and deflections and allows the foundation to have a desirable combination of high stiffness and superior fatigue resistance. 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 system and method are provided for manufacturing a tower structure. Accordingly, a first printed layer of a wall element is deposited with a printhead assembly, and an actual midline perimeter length of the first printed layer is determined. A horizontal reinforcement assembly is then formed based, at least in part, on the actual midline perimeter length. The formed horizontal reinforcement assembly is positioned in a horizontal orientation on the first printed layer and in axial alignment with the vertical axis of the tower structure. With the horizontal reinforcement assembly positioned on the first printed layer, a second printed layer of the wall element is deposited via the printhead assembly on the horizontal reinforcement layer.

The present invention relates to an elongate member and methods of its formation and assembly, the elongate member constructed of a stacked sequence of adjacent sections, the elongate member comprising, at each interface of adjacent sections, a lower seat member of an upper more of said adjacent sections, and an upper seat member of a lower more of said adjacent sections, wherein said upper and lower seat members at each interface having been match-cast as a seat member pair and seated with each other in the same relative position as the relative position the seat member pair was match-cast in.

A method for manufacturing a tower structure of a wind turbine includes printing, via an additive printing device, a plurality of concentric sections of the tower structure of the wind turbine. The concentric sections may be printed simultaneously from concrete, may include tensioning cables or other structural supports, and may define other support flanges or overhangs. After curing, the method may include raising an inner section of the plurality of concentric sections to a top of an adjacent outer section and joining the two sections. This process may be repeated to telescope the concentric sections and raise the tower structure.

A fatigue resistant gravity based spread footing under heavy multi-axial cyclical loading of a wind tower. The foundation having a central vertical pedestal, a substantially horizontal continuous bottom support slab, a plurality of radial reinforcing ribs extending radially outward from the pedestal. The pedestal, ribs and slab forming a continuous monolithic structure. The foundation having a three-dimensional network of post-tensioning elements that keep the structural elements under heavy multi-axial post compression with a specific eccentricity intended to reduce stress amplitudes and deflections and allows the foundation to have a desirable combination of high stiffness and superior fatigue resistance. 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.

It is described an assembly for lifting pre-stressing cables for a pre-stressed concrete structure having ducts for pre-stressing cables, to be arranged on top of the concrete structure, comprising: (a) a rail 22 on which a hoist or pulley 30 is arranged, which has wheels, which allow hoist 30 to move along the rail 22; (b) a supporting structure 12, attached to rail 22; (c) a plurality of columns 14, which supports the supporting structure 12 of the rail 22, arranged at a certain distance from the rail; and (d) an hoists 30 having a chain 34 which is inserted into the vertical ducts 52 for the pre-stressing cables of the concrete structure, and uploads the wires to the top of the structure.

A load-bearing structure and a method of producing a load-bearing structure, in particular a tower of a wind energy plant, provides a hollow concrete part with an outer wall which is manufactured by several layers produced in wet-on-wet technology. The outer layer is a fine-grain concrete layer provided with a textile reinforcement, and the inner layer is made of bulk concrete.