A full-moment column collar is disclosed, including four collar flange components and four collar corner components. Each collar flange component includes an upper transverse element and a lower transverse element, connected by a bridging member. Each collar corner component includes first and second expanses defining a corner and a standoff portion extending from the corner, the standoff portion having a distal T-shaped structure. Each collar corner component is configured to connect two adjacent collar flange components, and each collar corner component has a multi-axis alignment structure extending from a bottom end portion for vertically positioning a lower transverse element of a respective collar flange component.

A truss clamp assembly includes a lower support member extending in a lateral direction, a vertical rod coupled to the lower support member and extending in a vertical direction that is transverse to the lateral direction, a first engagement portion coupled to the vertical rod and spaced apart from the lower support member in the vertical direction, and a second engagement portion coupled to the vertical rod and spaced apart from the lower support member in the vertical direction, where the second engagement portion is spaced apart from the first engagement portion in the lateral direction, such that the first engagement portion and the second engagement portion define a gap positioned between the first engagement portion and the second engagement portion in the lateral direction.

A support column extends in a longitudinal dimension and includes a plurality of outer hollow longitudinal structures. Each longitudinal structure defines an interior passage extending along a length of the longitudinal structure. The support column includes a plurality of inner members. The plurality of outer hollow longitudinal structures are aligned end-to-end along a single axis. The interior passages of the plurality of outer hollow longitudinal structures cooperate to define an interior passage of the support column. The inner members are aligned end-to-end along the single axis within the interior passage of the support column so that opposed longitudinal ends of each of the inner members extend to respective longitudinal ends of each adjacent inner member. At least one end of at least one inner member is longitudinally offset from every longitudinal end of the plurality of outer hollow longitudinal structures.

A full-moment column collar is disclosed, including four collar flange components and four collar corner components. Each collar flange component includes an upper transverse element and a lower transverse element, connected by a bridging member. Each collar corner component includes first and second expanses defining a corner and a standoff portion extending from the corner, the standoff portion having a distal T-shaped structure. Each collar corner component is configured to connect two adjacent collar flange components, and each collar corner component has a multi-axis alignment structure extending from a bottom end portion for vertically positioning a lower transverse element of a respective collar flange component.

A beam can comprise a plurality of steel channel members that extend along a longitudinal axis. The plurality of steel channel members can cooperate to define an interior volume that is configured to receive concrete therein. The plurality of steel channel members can comprise a first C-shaped channel member defining a channel therein and having first and second flanges. The channel of the first C-shaped channel member can define a portion of an outer boundary of the interior volume. The first and second flanges can extend into the interior volume. A plurality of internally projecting members can be spaced along the longitudinal axis. The plurality of internally projecting members can extend into the interior volume from a steel channel member of the plurality of steel channel members. A strap can extend across the interior volume so that when the interior volume is filled with concrete, the strap engages the concrete.

A beam-column node structure of the steel prefabricated building is provided. The structure includes inner sleeves and driving components. The inner sleeves are slidably embedded in the transverse sleeves of the cross beam or node member; the driving components are used to drive the inner sleeves to move from one of the cross beams and the transverse sleeves embedded with the inner sleeves to the other. The inner sleeves are partly located in the crossbeams and partly in the lateral sleeves, and then the internal connection between the crossbeams and the lateral sleeves can be realized by the fasteners.

A one-piece structural fuse assembly is disclosed that is formed from a single piece of structural steel such as a beam. In embodiments, a first flange of the beam may form the fuse base, and a portion of the web of the beam may form the fuse plate. Additionally, a buckling restraint plate of the structural fuse assembly may be formed from a second flange of the beam, and the spacers of the structural fuse assembly may be formed from a portion of the web unused by the fuse plate. In examples, all of the components cut from the single piece of the beam are used in a single structural fuse assembly.

A lateral bracing system having high initial stiffness and including yield links capable of effectively dissipating stresses generated within the lateral bracing system under lateral loads.

A multi-story building that includes a vertical support core and a plurality of floor plates is described, wherein fabrication of the building includes, in one embodiment, assembling each of the floor plates at or near ground level, and lifting each of the floor plates to a design level on the vertical support core. A system and device for securing one of the floor plates to the building includes employing a vertically-oriented lock-in bracket.

A framework section having a connection region which is formed on the end face of at least one of its two ends. The connection region can be connected to the connection region of a further framework section. The framework section can include two upper chord sections and two lower chord sections, which extend parallel to one another in the longitudinal direction of the framework section and are connected to one another by connecting struts such that they define a cuboid space. The upper chord sections and the lower chord sections can have a tubular cross section, wherein the upper chord sections and the lower chord sections can also be configured to transition from the tubular cross section into an I-shaped cross section in the connection region.