A metal skeleton for the reinforcement of a vertically elongated concrete structure has a first plurality of leg members each having top and bottom ends and inner and outer side edges together defining a leg body portion. A first plurality of rib plate engagement slots are formed in at least one of the inner side edge and the outer side edge. Each of the leg members is formed from a flat sheet of metal material. A first plurality of rib plates each define a generally planar central body portion and each have a first plurality of leg-engagement slots projecting into the central body portion. The leg-engagement slots are dimensioned and adapted to frictionally engage with respective ones of the rib plate engagement slots. The first plurality of leg-engagement slots slidingly interfit within respective ones of the first plurality of rib-engagement slots to securely connect the rib plates to the leg members to form the metal skeleton.

A metal skeleton for the reinforcement of a vertically elongated concrete structure has a first plurality of leg members each having top and bottom ends and inner and outer side edges together defining a leg body portion. A first plurality of rib plate engagement slots are formed in at least one of the inner side edge and the outer side edge. Each of the leg members is formed from a flat sheet of metal material. A first plurality of rib plates each define a generally planar central body portion and each have a first plurality of leg-engagement slots projecting into the central body portion. The leg-engagement slots are dimensioned and adapted to frictionally engage with respective ones of the rib plate engagement slots. The first plurality of leg-engagement slots slidingly interfit within respective ones of the first plurality of rib-engagement slots to securely connect the rib plates to the leg members to form the metal skeleton.

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.

The present disclosure relates to a jig for manufacturing a reinforcement cage, which comprises a base member, a slot device disposed on the base member and extending along the lengthwise direction of the base member, and a plurality of fasteners arranged on a strip and spaced apart from each other along the lengthwise direction of the strip, wherein the strip is received in a slot of the slot device and is slidable within a predetermined range. The present disclosure further relates to an erecting frame for making a reinforcement cage assembly, which comprises a substantially square frame with four sides and a plurality of supports spaced apart from each other and disposed along the four sides, wherein each of the supports has at least one slot used for receiving and holding an end of a main bar of the reinforcement cage.

A computer-implemented method designs a tying bar enclosing a plurality of concrete-reinforcing bars in a 3D scene of a computer-aided design system. The method a) provides the three-dimensional models of the concrete-reinforcing bars to be enclosed by the tying bar; and b) computes a set of traces of each of the concrete-reinforcing bars. Each trace has a trace center. Next a set of connection lines is computed. Each connection line binds the trace centers. A set of circular arcs is computed. Each circular arc surrounds at least partially a respective trace, and a set of segments. Each segment is approximately parallel to a respective connection line and connects consecutive circular arcs. The segments and circular arcs form a center curve of the tying bar in the sketch plane. Lastly, the tying bar is designed based on the center curve and the bar radius of the tying bar.

The present invention relates to a novel form of modular prefabricated rebar component that relates generally to building construction, and particularly to an improvement in reinforced concrete with modular prefabricated rebar components.

The subject disclosure relates to a reinforcement cage, a jig and a method for making the reinforcement cage. The reinforcement cage includes a plurality of reinforcement units, which are arranged along a first direction, and a plurality of main bars. Each reinforcement unit includes a first stirrup, which is substantially rectangular, at least one second stirrup and at least one third stirrup. The first stirrup includes a first side, a second side, a third side and a fourth side. The first side and the third side are opposite to each other, and the second side and the fourth side are opposite to each other. The at least one second stirrup is connected to the first side and the third side of the first stirrup. The at least one third stirrup is connected to the second side and the fourth side of the first stirrup and substantially perpendicular to and fixed to the at least one second stirrup. The plurality of main bars extend along the first direction and through the reinforcement units, are adjacent to the first side, the second side, the third side and the fourth side of the first stirrup and are fixed to the reinforcement units.

Reinforcing bar cage connectors and methods of constructing reinforcing bar cages are provided. A reinforcing bar cage includes a reinforcing bar guide, a reinforcing bar rod, and a reinforcing bar cage connector. The reinforcing bar cage connector includes a first clamp portion facing a first direction and configured to receive one of the reinforcing bar guide or the reinforcing bar rod in a first opening. The reinforcing bar cage connector includes a second clamp portion facing a second direction, opposite the first direction, and configured to receive an other one of the reinforcing bar guide or the reinforcing bar rod in a second opening. The first opening is perpendicular to the second opening. The reinforcing bar cage connector includes a metal tie wire is operable to be twisted to compress the first clamp portion and the second clamp portion.

In a thermal insulation element, which is made at least partially from a compression load transferring material and comprises an upper and a lower support area for the vertical connection to the building parts to be constructed from concrete, it is provided that the thermal insulation element comprises at least one penetrating opening extending from the upper to the lower support area which is embodied for passing a compacting device for fresh concrete.

A foundation having a central vertical pedestal, a plurality of radial reinforcing ribs extending radially outward from the pedestal. The pedestal and ribs forming a continuous monolithic structure. An anchoring system under the ribs with anchoring the foundation to the ground by anchoring elements connected to rock anchors, soil anchors, piles or the like. 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.