A cellulose-based structural building panel assembly includes a cross-laminated timber (CLT) core which is reinforced with one or more post-tensioned tendons stressed to a pre-selected tensioning force, following the placement as part of the panel assembly. The tendons are provided within a sleeve which is grouted with a channel formed in an underside of the core and which after post-tensioning of tendons is infilled with a binder securing the tendons in a fully bonded configuration.

An enhanced non-coplanar double winding reinforcement method has a main reinforcing bars erecting step, a reinforcement stirrup winding step, and a crossties double hooking and confining step. The main reinforcing bars and the reinforcement stirrup can be stably confined by the crossties. No iron wire is needed for bundling. Toughness and aseismatic capability of a structure built by the enhanced non-coplanar double winding reinforcement method is improved. Accordingly, construction steps are simplified and construction efficiency are increased. A first plane defined by a main rod portion and a first hook portion of the crosstie and a second plane defined by the main rod portion and a second hook portion of the crosstie intersect, the second hook portion can pass between two of the main reinforcing bars that are disposed next to each other even when the main reinforcing bars are densely arranged.

A machine for assembling rebar cages includes a support frame, axial rollers mounted to the support frame for rotatably supporting a cylindrical wire cage for axial rotation about an axis of elongation, a carriage movably mounted to the support frame for translation, with the carriage adapted for driving an elongate rebar rod in a first axial direction. A drive mechanism is mounted to the support frame for driving the carriage in translation back and forth between a retracted position and an extended position for driving rebar rods into the rebar cages for assembly.

The present invention discloses a concrete-encased concrete-filled steel tube (CFST) column connection structure, a concrete-encased CFST column comprising such a connection structure, and a construction method for constructing such a concrete-encased CFST column, in the technical field of connection of concrete-encased CFST columns. Exposed steel tubes at the connection ends of two split concrete-encased CFST columns are connected through a core positioning sleeve of a concrete-encased CFST column connection structure. Exposed longitudinal bars of the two split concrete-encased CFST columns are connected through longitudinal bar sleeves of the concrete-encased CFST column connection structure. A space between the two split concrete-encased CFST columns is sealed by an external sealing sleeve of the concrete-encased CFST column connection structure; and the space in the external sealing sleeve and around the first and second exposed steel tubes is filled with a concrete slurry.

The invention relates to a supporting beam, in particular of composite design, for slab systems, in particular of composite design, wherein the supporting beam extends in a longitudinal direction and has: a support extending in the longitudinal direction, in particular a steel support, which is formed in at least two pieces and has at least two support parts which each extend in the longitudinal direction.

A steel reinforced concrete column for a high rise building comprises a plurality of hot-rolled steel sections extending longitudinally through the concrete column. Each of these steel sections has an outward flange with an outer surface turned outwards in the concrete column, an opposite inward flange with an outer surface turned inwards in the concrete column, and a web connecting the outward flange to the inward flange. The steel sections are arranged in the concrete column so that the outer surfaces of their inward flanges at least partially delimit therein a central concrete core with n lateral sides and a transversal cross-section that forms an n-sided polygon, n being at least equal to three, and each of then lateral sides of the central concrete core being coplanar with the outer surface of the inward flange of at least one steel section.

The invention relates to a reinforcing element for a concrete barrier-wall element, which concrete barrier-wall element has a repelling profile on at least one longitudinal side, wherein the reinforcing element has longitudinal reinforcing bars and has bows, which extend transversely to the longitudinal reinforcing bars and are connected to the longitudinal reinforcing bars. According to the invention, the reinforcing element has at least one first region and the first region largely has the repelling profile. The invention further relates to a method for producing a concrete barrier-wall element having a repelling profile on at least one longitudinal side.

Various implementations include methods and apparatuses for constructing a concrete structure. In one implementation, a structure includes a pre-cast concrete column section and a pre-cast concrete beam section. The column section includes an embedded first assembly with a threaded rod, and the beam section includes an embedded second assembly defining a channel for receiving the threaded rod. Grout is fed through a joint between the column and beam sections into the second assembly to couple the threaded rod with the second assembly. The grout is urged through the joint and the second assembly by gravity and by applying vacuum suction to a grout port defined by the second assembly. The grout port extends between the channel of the second assembly and an external face of the beam section.

A machine for assembling rebar cages includes a support frame, axial rollers mounted to the support frame for rotatably supporting a cylindrical wire cage for axial rotation about an axis of elongation, a carriage movably mounted to the support frame for translation, with the carriage adapted for driving an elongate rebar rod in a first axial direction. A drive mechanism is mounted to the support frame for driving the carriage in translation back and forth between a retracted position and an extended position for driving rebar rods into the rebar cages for assembly.

Implementations of rebar jigs may include: a ring including a first member and a second member. The first member may be configured to couple to the second member through a second connector. The rebar jig may also include a stand including a first leg, a second leg, and a support bar. The support bar may be positioned between the first leg and the second leg. The ring may be configured to receive three or more rebar thereon through at least three pegs coupled to a perimeter of the ring. The stand may couple with the ring through two or more couplers.