A vibration damping device and parameter adjustment method thereof

Abstract

The invention is applicable to the field of structural health monitoring, and provides a vibration reduction device and a parameter adjustment method thereof. The vibration reduction device comprisesa box body and a vibration reduction mechanism arranged in the box body; the vibration reduction mechanism comprises a plurality of vertically arranged sleeve rods, and a first steel plate and a second steel plate, wherein elastic components are arranged on the sleeve rods correspondingly, the plurality of sleeve rods form a plurality of groups of adjustable frequency ratios so as to realize multi-stage control of a structure in the vertical direction, and the first steel plate and the second steel plate correspondingly connected to the upper end and the lower end of each sleeve rod; the middle part of the first steel plate and the middle part of the second steel plate are correspondingly connected to the upper part of a first sliding base and the upper part of a second sliding base, and the lower part of the first sliding base and the lower part of the second sliding base are correspondingly movably nested into a first steel ball track assembly and a second steel ball track assembly correspondingly; and elastic devices are correspondingly arranged in the horizontal directions between the four side surfaces, namely the front side surfaces, the rear side surfaces, the left side surfaces and the right side surfaces, of the lower parts of the first sliding base and the second sliding base and the inner side surfaces of the first steel ball track assembly and the second steel balltrack assembly. The vibration reduction device can realize the multi-stage bidirectional control of vibration in the vertical and horizontal directions of the structure, the vibration reduction effectis effectively improved, and the application range is wide.

Description

technical field [0001] The invention belongs to the field of structural health monitoring, in particular to a vibration damping device and a parameter adjustment method thereof. Background technique [0002] In steel-concrete continuous composite girder bridges, due to the high tensile strength of steel and good compressive performance of concrete, the composite beams in the positive bending moment zone just give full play to the superior material properties of steel and concrete, so it is accepted and favored by the majority of bridge engineers. recognized. When a vehicle runs on a bridge, it will have a dynamic impact on the bridge structure, causing the bridge to vibrate, and the vibration of the bridge structure will in turn affect the vehicles running on the bridge. In this way, vehicle vibration and bridge structure vibration interact to form a complex multi-degree-of-freedom vibration system. Therefore, it is of great significance to study the bridge structure vibra...

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Problems solved by technology

[0006] The embodiment of the present invention provides a vibration damping device, which aims to solve the problems of directional control and single natural vibration frequency in the existing vibration damping device, which can only provide limited damping for the structure, which limits its application in structural vibration control, and is difficult Maintain a good vibration damping effect at each stage, the problem of poor vibration damping effect

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