A steel pipe anti-buckling energy-dissipating support

Abstract

The invention discloses an anti-buckling energy-dissipating support for steel pipes, which includes a restraint tube, an I-shaped core plate is movably inserted in the restraint tube, and connecting ears are fixedly connected to both ends of the I-shaped core plate. The core plate includes a horizontal section and a vertical section, and multiple sets of anti-buckling devices are symmetrically provided on both sides of the vertical section, and the anti-buckling devices include compression rods, which are vertically fixed on the vertical section; The invention provides an anti-buckling device. When the vertical section of the I-shaped core plate buckles under the action of external force, the pressure rod at the buckling position drives the trapezoidal pressure block and the annular pressure plate to start moving under the action of the vertical section. During this process, the trapezoidal pressure plate converts part of the pressure from the trapezoidal pressure block into the internal energy of the arc-shaped steel plate through the multiple arc-shaped steel plates on the corresponding side, and the spring converts part of the pressure from the annular pressure plate into the elastic potential energy of the spring, thus Excessive buckling of the I-shaped core plate is avoided, thereby protecting the building frame from 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...

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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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