Collision and buckling energy-consuming damper

Abstract

The invention belongs to the technical field of earthquake resistance, damping and wind resistance of engineering structures and provides a collision and buckling energy-consuming damper. The collision and buckling energy-consuming damper comprises a mass ball, a shell, a guide rod, backsprings, a plurality of groups of suspension arm rods, closure plates and a connecting plate, the cross section of the shell is square, the closure plates are fixed at two ends of the shell, the guide rod is fixed at the centers of the closure plates, the mass ball is penetratingly arranged on the guide rod and is capable of freely moving along the same, the suspension arm rods arranged at intervals are fixed on the inner wall of the shell and are capable of colliding with the mass ball by the aid of the length thereof and being separated from the mass ball after buckling, and the backsprings are fixed inside the closure plates and sleeved at two ends of the guide rod. The suspension arm rods are prone to buckling and collide with the mass ball when the mass ball moves along the guide rod, so that the suspension arm rods are buckled, and energy is consumed. When colliding with the backsprings and moving reversely, the mass ball continues to collide with the suspension arm rods. During operation, friction, collision and buckling can consume the energy, and accordingly the damper is a high-energy-consumption type damper wide in tuning frequency band.

Description

technical field [0001] The invention relates to a collision buckling energy-dissipating damper which causes the cantilever to buckle and consume energy through the collision between a mass ball and a cantilever, and belongs to the technical field of anti-seismic, shock-absorbing and wind-resistant engineering structures. Background technique [0002] In recent years, tuned mass dampers (TMDs) and tuned liquid dampers (TLDs) have attracted widespread attention in the engineering community due to their excellent damping properties. Stiffness and damping, by adjusting the natural frequency of the auxiliary structure to make it the same frequency as the main structure or external load, absorb the energy in the structure through resonance (like resonance), and use the damping unit to gradually dissipate the energy. [0003] Both the tuned mass damper and the tuned liquid damper have certain deficiencies: first, the additional mass is generally large and placed in a higher part of...

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Problems solved by technology

[0003] Both the tuned mass damper and the tuned liquid damper have certain deficiencies: first, the additional mass is generally large and placed at a higher part of the structure, and the adverse effects of the additional mass should be considered when designing structural components; second, When the additional mass vibrates, the internal force at the connection between the auxiliary structure and the main structure is relatively large, and the connection needs to be dealt with emphatically. The shock absorption effect of the excitation is not obvious

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