Self-resetting viscous damper based on composite spring

Abstract

The invention discloses a self-resetting viscous damper based on a combined spring, which includes a viscous damping energy-consuming device, a spring return device and a force transmission device. The force device includes an external force transmission component and an internal force transmission component; the external force transmission component includes a cylinder, the viscous damping energy dissipation device and the spring return device are installed in the cylinder, the internal force transmission component is a guide rod, and the guide rod is along the cylinder body. Arranged in the axial direction, the piston in the viscous damping energy dissipation device is fixedly connected to the guide rod. The spring return device includes a return spring and two pressure bearing plates arranged at both ends of the return spring in the axial direction. The return spring and the pressure bearing plate All are sleeved on the periphery of the guide rod, and can slide relative to the guide rod. The invention has excellent self-resetting ability and controllability, can consume energy stably under high and low frequency excitation, has overload protection characteristics, symmetrical tension and compression performance, convenient assembly, and easy disassembly and maintenance.

Description

technical field [0001] The invention belongs to the technical field of energy dissipation and shock absorption in civil engineering, and relates to a self-resetting viscous damper based on a combined spring. Background technique [0002] Energy-dissipating and shock-absorbing structure means that by setting energy-dissipating devices, during the vibration process of the structure, the relative displacement and relative velocity are generated by the structural deformation, so that the energy-dissipating device consumes the structural vibration energy, thereby reducing the seismic response of the structure and meeting the expected seismic design requirements. building structure. Common energy dissipation devices can be divided into displacement dampers (such as friction dampers, metal yield dampers) and velocity dampers (such as viscous dampers, viscoelastic dampers). Although the energy-dissipating and shock-absorbing structures designed in accordance with the requirements o...

AI Technical Summary

Problems solved by technology

When the balance plate is in the initial equilibrium position, no matter whether the return spring applies prestress or not, its return resultant force is zero; If the plate cannot fully return to the initial equilibrium position, the return spring on one side will be compressed, and the return spring on the other side will be pulled to provide a return resultant force that is balanced with the return resistance. Therefore, the self-reset damper can only achieve Partial self-resetting of the structure

At the same time, the self-resetting viscous damper has limited energy dissipation capacity under low-frequency vibration

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