Disclosed is a gusset plate connection with sliding end plates for a buckling-restrained brace, including central plate (1), first rib plate (2), second rib plate (3), horizontal end plate (4), first horizontal tie plate (5), second horizontal tie plate (6), bolts (7) and unbonding layers (8). Horizontal end plate (4) is perpendicular to the central plate (1) and fixedly disposed on a lower end surface of central plate (1). First horizontal tie plate (5) and second horizontal tie plate (6) are both disposed on an upper surface of horizontal end plate (4) and are located at two sides of central plate (1), respectively. Unbonding layers (8) are each disposed at a bottom surface of horizontal end plate (4), between horizontal end plate (4) and first horizontal tie plate (5), and between horizontal end plate (4) and second horizontal tie plate (6). The components are connected by means of bolts (7).

An extension support member includes a bracket or web having a first planar portion or leg, a second planar portion or leg, an acute angle between the first planar portion or leg and the second planar portion or leg, and a bend or backbone joining the first planar portion or leg to the second planar portion or leg. The extension support member also includes is a first mounting portion or tab joined to the second planar portion or leg via the bend or backbone at a first obtuse angle and a second mounting portion or tab joined to the first planar portion or leg via the bend or backbone at a second obtuse angle. The first mounting portion and the second mounting portion are located at opposite ends of the bracket or web.

An extension support member includes a bracket or web having a first planar portion or leg, a second planar portion or leg, an acute, concave angle between the first planar portion or leg and the second planar portion or leg, and a bend or backbone joining the first planar portion or leg to the second planar portion or leg. The extension support member also includes is a first mounting portion or tab joined to the second planar portion or leg via the bend or backbone at a first, convex obtuse angle and a second mounting portion or tab joined to the first planar portion or leg via the bend or backbone at a second obtuse, convex angle. The first mounting portion and the second mounting portion are located at opposite ends of the bracket or web.

A beam clamp for securing strut to a beam includes a clamp body having a first strut engagement portion configured for engaging a first attachment structure of a strut, and a second strut engagement portion separate from the first strut engagement portion and configured for engaging a second attachment structure of a strut.

The present application provides a prefabricated structural system and an assembly method thereof. The prefabricated structural system may be applied to steel structures, reinforced concrete structures and timber structures. When applied to the steel structures, the prefabricated structural system includes a plurality of steel structure joints and related members. The steel structure joints and related members further comprise: a beam-column connecting sleeve, comprising a first box-shaped steel tube and first C-shaped sleeves extending from and perpendicular to outer surfaces of the first box-shaped steel tube, wherein the first C-shaped sleeve is provided with first wedge shaped recesses at ends of upper and lower flanges thereof; columns, having a column connecting end inserted into the first box-shaped steel tube; main beams, having a main beam connecting end inserted into the first C-shaped sleeve; and main beam fixing steel plates, provided with first wedge shaped protrusions that are tenon-mortise-jointed with first wedge shaped recesses at both sides of the first C-shaped sleeve. In addition to the steel structural construction, the beam-column connecting sleeve of the prefabricated structural system may be further extended to reinforced concrete structures and timber structures.

A column and beam connection structure for connecting a steel H-beam to a column uses an external diaphragm. The external diaphragm includes a plurality of divided diaphragm segments such that each diaphragm segment has a column plate abutting on the column. A diaphragm segment which is arranged along the steel H-beam among the plurality of divided diaphragm segments has a beam plate installed in a flange of the steel H-beam. The beam plate has an end portion in which the column plate is provided. A joining surface between the diaphragm segments is placed in a vicinity of a corner portion of the column so that only the column plate of one of the diaphragm segments abuts on each column surface of the column. A joining member fastens to fix between the diaphragm segments such that contact pressure is applied from the column plates to the surface of the column.

A plenum housing includes a plurality of construction panels and a plurality of compression seal groove connectors secured between the plurality of construction panels. Each of the plurality of compression seal groove connectors includes a recess having at least one interior surface with at least one compression seal groove.

A clamp is disclosed along with method of using the clamp attach or more or more strut channels to another element, which may be a flange, such as the flange of an I-beam or another strut. The clamp has an opening to accept the strut channel between a pair of sides and against the bottom of the clamp, and a pair of clamp surfaces for contacting the other element. A threaded element is provided for forcing the strut channels against the other element. A method for using the clamp allows the clamp to be placed anywhere on the strut channel and allow an installer to tighten the clamp from either above or below the clamp.

A construction panel includes a concrete layer and a plurality of framing members coupled to the concrete layer. Each framing member includes first and second channels having respective webs and flanges extending from the webs to form openings in first and second channels facing away from each other. Each framing member also includes a plurality of flanges positioned in and extending across a gap between the first and second channels. Each framing member further includes at least one bent bar including a first plurality of bar sections, with each bar section of the first plurality of bar sections positioned adjacent to at least one flange of the plurality of flanges and extending out from within the gap and into the concrete layer.

The present disclosure provides with a modular unit for apparatus installation, comprising a plurality of vertical struts and multiple layers of apparatus installation frame connecting the plurality of vertical struts for installing apparatuses. The modular unit for apparatus installation is transported in its entirety to a desired installation site to perform installation in a state where various apparatuses are mounted to respective layers of the apparatus installation frame. In the multiple layers of apparatus installation frame, at least the apparatus installation frame at a bottom layer is a crossbeam frame composed of a plurality of crossbeams, and the crossbeam frame is detachably connected not only to a plurality of vertical struts, but also to the various apparatuses mounted to the crossbeam frame. With the modular unit for apparatus installation according to the present disclosure, at least a portion of the crossbeam frame at the bottom layer on which various apparatuses are mounted may be disassembled after the modular unit arrives at the installation site, such that the potential danger caused by the crossbeam frame obstructing the diffusion of gases stranded at the bottom layer can be prevented.