Self-resetting damper of micro-vibration energy dissipation part

Abstract

The invention discloses a self-resetting damper of a micro-vibration energy dissipation part. The self-resetting damper comprises an inner restricted component, a damping material body, an outer restricted component, an anchor plate I, a connecting plate I, an anchor plate II, a connecting plate II and a tension system, wherein the inner restricted component is arranged inside the outer restricted component, and the free length of the inner restricted component is greater than that of the outer restricted component; the anchor plate I and the anchor plate II are tightly pressed at the two ends of the inner restricted component; the tension system is anchored on the anchor plate I and the anchor plate II respectively through pretension steel stranded wires or shape memory alloy or fiber bars; the connecting plate I penetrates through the anchor plate I and is fixedly connected with the inner restricted component; the connecting plate II penetrates through the anchor plate II and is fixedly connected with the outer restricted component; the damping material body is arranged between the inner restricted component and the outer restricted component. Energy dissipation is realized during wind vibration and earthquake at the same time, so that the rigidity of the damper under the effect of moderate and major earthquakes is improved, and multiple effects of residual deformation of the damper can also be effectively controlled.

Description

technical field [0001] The invention belongs to the technical field of structural engineering and relates to a novel damping energy consumption device. Background technique [0002] Damping energy-dissipating devices, such as viscoelastic dampers, are energy-dissipating and shock-absorbing components that dissipate seismic energy by sandwiching a damping material between two plates to cause shear deformation. When the two plates produce relative parallel displacement, the damping material body produces shear deformation, and the resistance force with hysteretic characteristics plays a role to absorb vibration energy. The mechanism by which the damping material body absorbs vibration energy also works when it is slightly deformed. Therefore, the damping material body can exert stable energy absorption performance under the action of micro-vibration and earthquake caused by wind or traffic vibration. [0003] However, under the action of medium and large earthquakes, the two ...

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Problems solved by technology

[0003] However, under the action of medium and large earthquakes, the two plates sandwiching the damping material body will produce a relatively large parallel displacement, resulting in the cumulative residual deformation of the damper itself, which cannot return to the original state after the earthquake, thus affecting the structure after the earthquake. The repair cost has a significant impact, because with the increase of the residual deformation angle between the structural layers, the maintenance cost of the building will increase significantly, even greater than the reconstruction cost, so reducing the post-earthquake residual deformation of the damping energy-dissipating device needs to be improved one of the problems

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