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 construction method for a building is provided that includes the steps of: hoisting and positioning a plurality of precast columns on at least a portion of a predetermined area of a construction site to form a precast column array having at least two spans along a first direction and one or more spans along a second direction substantially perpendicular to the first direction; positioning the pre-fabricated beam rebar assemblies between adjacent precast columns, positioning each of the precast slab panels on support potions on the precast columns, assembling the beam cage and pouring the concrete into the molds for the beam cage to accomplish the structure of a single story; and repeating the steps of constructing the above-mentioned precast column array until completion of the structure of all stories of the building.

The present invention relates to a buckling resistant spring clad bar (BRSCB) to improve lateral confinement of compression system uniformly so as to enable it to (a). applied loads withstand both compression and tension (b). ability to withstand much higher axial compression loads (c). significant improvement in post-elastic behavior due to enhanced ductility without strength degradation. The BRSCB comprises a plurality of bar, a plurality of one-way spring in an embodiment, a plurality of grips, and a plurality of peripheral ties. The system further comprises a plurality of opposing spring in another embodiment. In the opposing spring, one of the springs is wrapped in a clockwise direction and another one in an anticlockwise direction. Both the ends of the bar are covered with the end grip to hold the assembly firmly and to avoid end slippage of the one-way/opposing spring. The multiple bars wrapped with the spring are connected together with the peripheral ties to form desired cage assembly. The cage assembly can be embedded in the concrete structure/suitable medium. Further, spring cladded bars can be housed in sleeve to improve the ductility and impact/shock resistance of the structure.

A method for forming a plurality of beams connected in series is provided. The method comprises the following steps: providing a plurality of columns; providing a plurality of pre-assembled bar combinations, wherein each of the plurality of pre-assembled bar combinations comprises a plurality of lower main bars and a plurality of lower stirrups, and at least one end of the plurality of the lower main bars has connection sections extending beyond the plurality of lower stirrups; hoisting each of the bar combinations so that the two ends thereof are placed on top of two adjacent columns of the plurality of columns and the connection sections of the plurality of lower main bars of adjacent plurality of bar combinations overlap; and connecting the plurality of connection sections of the plurality of lower main bars of the adjacent plurality of bar combinations.

The present application relates to the structure of a load-bearing column and a factory using the same. The load-bearing columns comprise a first column, a second column and a third column. The first column is a reinforced concrete column and is arranged on the underground floor. The second column is a pre-fabricated reinforced concrete column on the ground floor and is fixed to the top of the first column. The third column is fixed to the top of the second column, wherein the third column comprises a steel column and a third reinforcing bar assembly which surrounds the circumference of the steel column and extends from the bottom of the steel column in an axial direction to a predetermined distance.

A modular assembly for forming a shear wall includes a modular frame having a first side, and formwork. The formwork has a reinforcing bar cage and a first wall each coupled to the first side of the modular frame. The first wall is disposed between the reinforcing bar cage and the first side of the modular frame.

A concrete variable cross-section prefabricated square pile comprises pile bodies of large cross-section sections and small cross-section sections alternately arranged along a longitudinal direction. Lateral transition surfaces are formed between side surfaces of the large cross-section sections and adjacent small cross-section sections; at least part of the lateral transition surfaces have a front edge and/or a rear edge that are offset from a vertical direction in a lateral projection, and a vertical projection of an intersection line between the lateral transition surface and a first horizontal plane is located outside a vertical projection of an intersection line between the lateral transition surface and a second horizontal plane; the first horizontal plane is a horizontal plane located above in any two horizontal planes, and the second horizontal plane is a horizontal plane located below in any two horizontal planes.

The invention relates to a production plant (18) for manufacturing a three-dimensional reinforcement element for a reinforced concrete element, comprising a receiving table (19) for accommodating the reinforcement element and a manipulation device (21) for manipulating and joining individual parts of the reinforcement element. The manipulation device (21) comprises a first articulated arm robot (22) having a gripping mechanism (24) for positioning rebar mats and/or spacers of the reinforcement element and a second articulated arm robot (23) a welding unit (25) for welding the spacers to the rebar mats.

A system for producing reinforcing cages for wind turbine tower segments, wherein a reinforcing cage has in each case substantially horizontally oriented ring segments and substantially vertically oriented stiffening elements. It is proposed that the system has a receiving area which is adapted so as to receive the preferably inner, substantially horizontally oriented ring segments of the reinforcing cage, a first handling robot for supplying and positioning the stiffening elements, and a second handling robot for connecting the ring elements to the stiffening elements.

A reinforced concrete composite beam structure based on precast concrete beam-slab integrated units include rib beams and rebar cages; stirrups in the rib beams are closed stirrups; upper parts of the closed stirrups in each rib beam are extended from the rib beam and taken as connecting rings; the rebar cages are disposed on upper parts of two connected rib beams; the connecting rings are lapped with beam surface closed stirrups to form the reinforced concrete composite beam structure with the rib beams after casting concrete. Its construction method includes: installing the precast concrete beam-slab integrated units; hoisting the rebar cages on the rib beams to tie two corresponding connecting rings with the corresponding beam surface closed stirrup in a staggered and overlapped manner; and casting concrete to submerge the rebar cages. A form of the closed stirrups is proposed when rib width of the rib beams is small.