Self-return wide-frequency-domain mixing and energy-dissipating damper

Abstract

The invention relates to a self-return wide-frequency-domain mixing and energy-dissipating damper. The self-return wide-frequency-domain mixing and energy-dissipating damper comprises a self-return spring device, a viscous damping device and a transition friction connecting device, wherein the self-return spring device comprises a first cylinder body, a first shaft rod, a pre-pressing spring and two pre-pressing limiting parts, the first shaft rod is arranged in the first cylinder body, and two jacking parts are further arranged on the inner wall of the first cylinder body in a spaced mode; the viscous damping device comprises a second cylinder body, damping choke plugs arranged at the two ends of the second cylinder body, and a second shaft rod, two ends of which separately pass through the damping choke plugs at the two ends; a piston which is in contact with and is sealed with the inner wall of the second cylinder body is further arranged on the second shaft rod; a through throttlehole is formed in the piston; and the two ends of the transition friction connecting devices are fixedly connected to the first shaft rod and the second shaft rod separately. Compared with the prior art, the self-return wide-frequency-domain mixing and energy-dissipating damper integrates self-return, buckling resistance, lateral force resistance and energy dissipation, and has good energy dissipation and anti-shake performances such as self-return for low-frequency and high-frequency dynamic excitation; and meanwhile, the damper components are basically free of damages after being shaken, anddo not need to replace, and therefore, earthquake loss is reduced.

Description

technical field [0001] The invention belongs to the technical field of anti-shock and shock absorption of structural engineering, and relates to a self-resetting wide-frequency domain hybrid energy-dissipating damper. Background technique [0002] The anti-seismic design goal of traditional structures is not to collapse in large earthquakes. After the structure experienced rare earthquakes, although the structure did not collapse as a whole, the energy consumption of the material into the plastic yield caused a large residual deformation to the structure after the earthquake. Afterwards, it is difficult to repair, and the building can only wait for demolition and reconstruction. During this period, the functions of the buildings cannot be performed, and the decommissioning of a large number of buildings will bring huge economic losses and social problems to the society. With the introduction and popularization of the concept of resilient city, people hope that the function ...

AI Technical Summary

Problems solved by technology

Although the patented composite damping device has self-resetting and viscous energy dissipation capabilities, the energy dissipation capability of the device is limited under low-frequency vibrations

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