7results about How to "Prevent local buckling" patented technology

The invention relates to the technical field of the building industry, and discloses a fabricated steel structure and an installation method, the fabricated steel structure comprises frame columns and frame beams, and the frame columns and the frame beams are connected in a matched mode; the modular node units are detachably connected with the frame columns and the frame beams respectively; the modularized joint unit comprises a first connecting plate and a second connecting plate, the sides, deviating from each other, of the first connecting plate and the second connecting plate are suitable for being connected with one ends of the adjacent frame columns correspondingly, and a box type steel column section is arranged between the first connecting plate and the second connecting plate; the two ends of the box type steel column section are connected with the first connecting plate and the second connecting plate correspondingly. The modularized joint units are further provided with I-shaped steel beam ends, and the two I-shaped steel beam ends are connected with the two ends of the box type steel column section respectively in the extending direction of the frame beam.

The utility model discloses an I-shaped steel reinforcing assembly which comprises transverse I-shaped steel fixedly installed on the left side and the right side of I-shaped steel, a round sleeve is installed on the front side of the I-shaped steel, a square sleeve is installed on the surface of the round sleeve, and a plurality of bolts are arranged on the surface of the I-shaped steel in a penetrating mode. The round sleeve and the square sleeve are fixedly connected with the I-shaped steel through bolts, a connecting frame is fixedly connected to the surface of the square sleeve, an upper top plate is arranged at the top of the connecting frame and fixedly connected with the I-shaped steel, and a lower bottom plate is arranged at the bottom of the connecting frame and fixedly connected with the I-shaped steel. The round sleeve, the square sleeve and the connecting frame are used in cooperation, the periphery of a hole formed in the I-shaped steel is reinforced, then the supporting plate, the supporting frame and the triangular supporting plate are used in cooperation, the triangular supporting plate can support the lower bottom plate, and finally the round sleeve is stably installed on the periphery of the hole formed in the I-shaped steel.

The utility model relates to the technical field of automobile parts, and discloses a multifunctional lightweight support which comprises a support body, a cavity is formed in the support body, a reinforcing plate is fixedly connected in the cavity, and a first mounting hole, a second mounting hole and a third mounting hole are formed in the side face of the support body. A lightweight assembly is installed in the support body and comprises a honeycomb core layer, the honeycomb core layer is fixedly connected in the support body and is in a honeycomb shape, the lightweight assembly comprises a foam core layer, the foam core layer is fixedly connected in the support body, and the foam core layer is in a honeycomb shape. The foam core layer is in a foam shape. The cavity is formed in the support body, redundant materials in a non-bearing area are removed, the overall weight is reduced, the reinforcing plate is arranged at the key stress position, a continuous force transmission path is constructed in the stress direction, and light weight and rigidity improvement are achieved.

The invention discloses an assembled corrugated steel plate recycled concrete composite shear wall and a construction method. The assembled corrugated steel plate recycled concrete composite shear wall is mainly composed of a frame column and a shear wall body. The frame column includes a cylindrical steel pipe and a first recycled concrete layer, and the first recycled concrete layer is arranged in the cylindrical steel pipe. The shear wall body includes two closed corrugated steel plates, two open corrugated steel plates and a second recycled concrete layer. The closed corrugated steel plates and the open corrugated steel plates are fixedly connected between adjacent frame columns, the closed corrugated steel plates are arranged on the outside of the open corrugated steel plates, and the second recycled concrete layer is arranged between the closed corrugated steel plates and the open corrugated steel plates, and between the two open corrugated steel plates. The open corrugated steel plates can make up for the deficiency of the closed corrugated steel plates in rigidity, and jointly constrain the second recycled concrete layer. The construction method of the assembled corrugated steel plate recycled concrete composite shear wall can improve the applicability of concrete and facilitate construction.

The invention discloses a modular design method based on a CS-FC-SB composite wall body. The modular design method comprises the following steps: decomposing a CS-FC-SB wall into a foamed concrete wall (CS-FC) with a cold-formed steel frame, an outer-layer ecological straw board (SB) and an end post for respective design, and finally designing a connection mode. Wherein the CS-FC size, reinforcement and foamed concrete model selection are obtained on the basis of a performance design method, the SB thickness is obtained on the basis of a finite element analysis method, and the end column size reference specification structure, welding, self-tapping screw or bolt connection and other key parameter design are obtained on the basis of an anti-seismic requirement simplified calculation formula of the CS-FC-SB composite wall. By means of the modular design method, the computational analysis process of the CS-FC-SB composite wall can be greatly simplified, only computational welding, self-tapping screws and bolt connection are needed on site, the construction period can be effectively shortened, the construction cost is reduced, and the method can be applied and popularized in low multi-layer village and town building structures.

This invention discloses a FRP-concrete composite beam with built-in damage self-monitoring and its construction method, belonging to the field of civil engineering structural technology. The composite beam includes a concrete slab, an FRP profile, a shear reinforcement layer, intelligent connectors, and a protective shell. The intelligent connectors penetrate the shear reinforcement layer and are anchored to the FRP profile. Strain sensing elements are embedded internally, and driving elements are externally located. When the preload of the connector decreases, the driving elements actively extend to restore the preload. The shear reinforcement layer is a perforated plate filled with a tough material to enhance the shear resistance of the interface. The protective shell is a U-shaped precast concrete shell that wraps around the FRP web, providing lateral restraint and protection. This invention achieves real-time monitoring of FRP-concrete interface damage and automatic preload compensation, significantly improving the shear performance, integrity, and durability of the structure. It has advantages such as self-sensing, self-repair, and easy construction, and is suitable for long-span bridges, marine engineering, and intelligent building structures.

The T-shaped beam with the bilateral reinforcing devices comprises a T-shaped beam body, a concrete layer is poured on the upper end face of a flange plate of the T-shaped beam body, and a first steel plate is laid on the concrete layer. A second steel plate adheres to a web of the T-shaped beam body, a prestress anchoring device is welded to the outer side wall of the second steel plate and comprises a third steel plate, a plurality of fourth steel plates are welded to one face of the third steel plate and perpendicular to the long edge at equal intervals, a plurality of through holes are formed in the fourth steel plates, and a plurality of steel strands are tensioned in the through holes; the long edge of the third steel plate is vertically welded with the second steel plate; and the edge of the fourth steel plate vertical to the third steel plate is welded with the second steel plate. According to the T-shaped beam with the reinforcing devices on the two sides, the T-shaped beam has better ductility and higher bearing capacity.