Steel pipe buckling-restrained brace

Abstract

The invention discloses a steel pipe buckling-restrained energy dissipation support which comprises a restraining pipe, an I-shaped core plate is movably inserted into the restraining pipe, connectinglugs are fixedly connected to the two ends of the I-shaped core plate, the I-shaped core plate comprises a horizontal section and a vertical section, multiple sets of buckling-restrained devices aresymmetrically arranged on the two sides of the vertical section, and each buckling-restrained device comprises a pressing rod. The pressing rod is vertically and fixedly connected to the vertical section. By arranging the anti-buckling device, when the vertical section of the I-shaped core plate is buckled under the action of external force, the pressing rod at the buckling position drives the trapezoidal pressing block and the annular pressing plate to start to move under the action of the vertical section, and in the process, the trapezoidal pressing block and the annular pressing plate aredriven to move. The trapezoidal pressing plates convert part of pressure from the trapezoidal pressing blocks into internal energy of the arc-shaped steel plates through the arc-shaped steel plates onthe corresponding sides, and the springs convert part of pressure from the annular pressing plates into elastic potential energy of the springs, so that excessive buckling of the I-shaped core plateis avoided, and the building frame is protected against damage.

Description

technical field [0001] The invention belongs to the technical field of building structures, in particular to a buckling-resistant energy-consuming support of steel pipes. Background technique [0002] Buckling-restrained bracing is also called buckling-restrained bracing or BRB. The biggest advantage of buckling-restrained bracing is the separation of its own bearing capacity and stiffness. Ordinary bracing needs to consider its own stability, so that the cross-section and bracing stiffness are too large, resulting in structural If the rigidity of the structure is too large, this will indirectly cause the seismic force to be too large, forming an inevitable vicious circle; the use of anti-buckling supports can avoid such phenomena and meet the structural requirements for bearing capacity without increasing the structural stiffness. , so buckling-resistant braces are often used to provide lateral stiffness and load-bearing capacity for frame or bent structures. [0003] Exis...

AI Technical Summary

Problems solved by technology

[0003] Existing anti-buckling braces generally include confinement tubes, filling materials, core plates, and non-adhesive materials on the surface of the core plates. Concrete is generally used as the filling material. Due to the relatively large weight of concrete, the volume and weight of the buckling-resistant supports are also relatively large. increase, which in turn increases the difficulty of installation, and the quality of concrete and the uncontrollable density of concrete filling in the restraint tube lead to the fact that the effect of anti-buckling braces in actual use is often not ideal

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