Self-resetting composite energy-dissipating support using gears to amplify displacement and pulleys to open cables

Abstract

The invention discloses a self-resetting composite energy-dissipating support that utilizes gears to amplify displacement and pulleys to open cables. Composed together. Under the action of a small earthquake, the pinion is not in contact with the zigzag metal strip, and the viscoelastic damper plays the role of energy dissipation. Under the action of moderate or large earthquakes, the pinion gear and the zigzag metal strip occlude to drive the gear and the pulley to rotate, so that the high-strength steel wire cable is tightened and a tension is applied to it, so that the high-strength steel wire cable acts the same as the prestressed tendon The role, so as to achieve the purpose of self-resetting. The combination of gears with different diameters can amplify the displacement, so that the high-strength steel wire cable is subjected to greater tension, so that it has a strong self-resetting ability. The device of the invention can consume energy for shock absorption under different intensity earthquakes and can self-reset under moderate and large earthquake conditions, so as to protect the safety of the main body structure.

Description

technical field [0001] The invention relates to a self-resetting composite energy-dissipating support utilizing a gear to amplify displacement and a pulley to open a cable. The invention belongs to the field of anti-seismic and shock-absorbing technologies in the field of civil engineering. Background technique [0002] Building structures will inevitably suffer different degrees of damage under the action of earthquakes. In order to reduce the damage of building structures under the action of earthquakes and reduce the casualties and economic losses caused by structural damage, two methods are currently used to improve the earthquake resistance of building structures. One is to provide more safety reserves for the building structure during building design, so that the structure has greater rigidity and earthquake resistance. The second is to install an energy-dissipating shock-absorbing device on the main body of the building structure to dissipate the seismic energy throu...

AI Technical Summary

Problems solved by technology

Under the action of small earthquakes, the damage to the building structure is slight, and it also has a certain self-resetting ability; while under medium and large earthquakes, the energy-dissipating shock-absorbing device and the self-resetting device are always used together, which will significantly weaken the former's full energy-dissipating ability , resulting in the structure being able to self-reset, but the shock absorption performance is forced to decrease

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