Tuned mass damper based on anti-buckling restraint support

Abstract

The invention relates to a tuned mass damper (TMD) based on buckling restrained braces. The TMD mainly comprises an inner ring mass block, an outer ring mass block, a rubber friction layer, pin shafts, the buckling restrained braces, a cross-shaped connecting rod, an angle steel connecting plate, a high-strength bolt, an energy dissipation beam section and a lug plate; the inner ring mass block rotates relative to the outer ring mass block, and friction energy dissipation with the rubber friction layer is utilized; stability and the damping energy dissipation effect under a strong earthquake of the TMD are enhanced through the buckling restrained braces; the mass blocks swing during the earthquake, so that reverse restoring force is provided for a structure, and meanwhile, energy dissipation of the buckling restrained braces is accelerated; and mass of the mass bocks is transferred to the energy dissipation beam section, so that entering of plastic stage energy dissipation of the energy dissipation beam section is accelerated, the main structure is free from being damaged, and post-earthquake replacement is convenient through the design.

Description

technical field [0001] The invention belongs to the anti-seismic field of building steel structures, and in particular relates to a tuned mass damper based on anti-buckling constraint supports. Background technique [0002] A single pendulum tuned mass damper (TMD) is composed of a mass block, a pendulum rope and a damping system. By adjusting the natural frequency, it is close to the controlled frequency of the main structure. When the main structure is forced to vibrate, a corresponding The main structure moves in the opposite direction and exerts a reaction force on the main structure. The vibration energy input to the structure is gradually dissipated through the damper, thereby controlling the vibration of the structure. [0003] The anti-buckling restraint support is an axially stressed member that will not lose stability when it is under pressure. It is mainly composed of two parts: the inner core material unit and the outer restraint unit. The constraint of the core...

AI Technical Summary

Problems solved by technology

[0004] Traditional TMD dampers mostly use viscous dampers. The output of viscous dampers is directly related to the piston hole. Long-term use will expand the piston hole and affect the damping coefficient. Moreover, viscous dampers often leak oil during use, so viscous The damper is not the best way to provide damping for TMD; and the traditional TMD shock absorption effect is not good in strong earthquakes

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