tmd device with eddy current damper

Abstract

The TMD device with an eddy current damper includes a support frame fixed under the floor, a mass block is arranged on the support frame, and an adjustment mechanism is provided between the support frame and the mass block, so that the center of mass can be changed under the action of the mass block adjustment mechanism Height, there are multiple dampers between the mass block and the support frame, so that the mass block oscillates vertically under the influence of the damper, sensors are installed on the mass block and the support frame, and the sensor detects the distance between the mass block and the support frame. Oscillation amplitude and frequency, the structure of the permanent magnet and coil set by the damper, use the principle of electromagnetic Lenz to dissipate energy, improve the effect of suppressing vibration, the adjustment seat and the second spring can adjust the stiffness of the TMD device to adjust the vibration of the TMD device Frequency, usually the stiffness of the TMD device increases, the vibration frequency of the TMD device increases, and the stiffness decreases, the vibration frequency of the TMD device decreases, and the sensor compares the vibration amplitude and frequency of the detection mass and the support frame, thereby acting on the adjustment mechanism. Adjustment, suitable for promotional use.

Description

technical field [0001] The invention relates to the field of civil engineering technology, in particular to a TMD device with an eddy current damper. Background technique [0002] In the field of civil engineering, it is a common measure to use vertical TMD for vibration absorption and vibration control for pedestrian bridges or building structure floors with small vertical natural vibration frequencies. Vertically supported TMDs using compression springs as stiffness elements are very common. The eddy current damper, as a damper with the characteristics of non-contact and high efficiency, is also used in TMD. At present, the general eddy current damping TMD adopts the structure form of the plate type eddy current damping device, and the conductor is generally a copper plate with high conductivity, which is of high quality and high cost, so it is not convenient for engineering promotion. When the TMD is installed on a building, the frequency of the TMD needs to be adjusted...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a TMD device with an eddy current damper, which solves the problems of complex overall structure, low frequency adjustment accuracy and troublesome installation of the existing TMD

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