Multidirectional multi-frequency tuned mass damper

Abstract

The invention relates to a multidirectional multi-frequency tuned mass damper which is a vibration control device for a building structure. The multidirectional multi-frequency tuned mass damper comprises a mass block, a spring, viscous dampers, an outer frame steel plate of the device, fasteners of the outer frame steel plate, and the like, wherein the outer frame steel plate of the device is designed in a ring form; sixteen springs are divided into eight groups; the springs in each group are arranged up and down; the eight groups of springs are arranged in the shape of a Chinese character 'mi'; each viscous damper and each group of springs are in a same upright plane and are located between two springs; the viscous dampers are arranged in the shape of a Chinese character 'mi'; the rigidity of the springs is confirmed according to horizontal and vertical natural frequencies of vibration of the building; the springs are designed to be different in rigidity; and eight fasteners of the outer frame steel plate are used for fixing the outer frame steel plate of the device and are respectively located at vertexes of a regular octagon. The multidirectional multi-frequency tuned mass damper can be used for controlling multidirectional multi-frequency earthquake response, can be mounted on a structure such as a high-rise and towering building and a nuclear power station for reducing the earthquake response of the building structure, and has a protection function and can bring higher economic benefit and social benefit.

Description

technical field [0001] The invention relates to a building structure vibration control device, in particular to a multi-directional and multi-frequency tuned mass damper for building structure vibration control. Background technique [0002] The tuned mass damper (TMD for short) system is to add inertial mass on the top layer of the structure, and connect with the main structure with springs and dampers, and apply the principle of resonance to control a certain vibration mode of the structure. Usually the inertial mass can be a water tank, a machine room or a revolving restaurant in a high-rise or towering structure. The mechanism of its vibration control on the structure is: the dynamic characteristics of the original structure system change due to the addition of TMD. It also plays the role of energy dissipation, so as to achieve the purpose of significantly attenuating the vibration response of the original structure. [0003] The earliest source of modern ideas for the...

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Problems solved by technology

[0007] However, the environmental loads such as wind and earthquakes on the building structure come from different directions. The traditional TMD cannot control the wind vibrations and earthquakes in different directions. Therefore, it is necessary to develop a method that can control wind vibrations and earthquakes in different directions. TMD; in addition, the natural frequency of the structure in different directions is different, so the traditional TMD is powerless

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