Spherical multidirectional compound type TMD damper

Abstract

The invention provides a spherical multidirectional compound type TMD damper. Two layers of big and small concentric spherical shells are used as a main frame of the spherical multidirectional compound type TMD damper, the two layers of the concentric spherical shells are connected with a support seat through an upper column rod, a lower column rod, a left column rod, a right column rod, a front column rod and a rear column rod, and are fixed to the main structure through the support seat. A large mass ball is located on the innermost portion, the large mass ball are fixed to the inner spherical shell in the upper, lower, left, right, front and back directions through damping springs, and the large mass ball is filled with viscous damping liquid. A certain number of small mass balls are arranged between the outer spherical shell and the inner spherical shell, and the small mass balls are tangent to the spherical shells on both sides. Through the homogeneity of a sphere in all directions, the damper can achieve the multifunctional damping control effect by almost 360 degrees; and in response to the vibration caused by external loads of different intensities, the spherical damper has different damping combinations correspondingly.

Description

technical field [0001] The invention relates to civil engineering technology, in particular to vibration reduction control technology. Background technique [0002] Damper is the main body of energy dissipation and vibration reduction technology. FEMA 274 divides it into displacement-related damper, velocity-related damper and other types. This classification method is also adopted in my country's current seismic design code. Displacement related type—metal damper, friction damper; speed related type—viscoelastic damper, viscous damper; other types of damping devices include: electrorheological fluid damper, magnetorheological fluid damper, tuning mass and tuned liquid dampers. In addition, some composite dampers designed with two or more energy-dissipating elements or energy-dissipating mechanisms, as well as some special dampers that combine new material properties (such as self-resetting SMA dampers) are also the latest research. hotspots. [0003] The tuned mass dampe...

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the existing TMD only controls vibration in one direction, realize the multi-directional vibration control of the structure, and the purpose of adjustable vibration frequency

[0010] Compared with the prior art, the present invention has the following advantages: 1. The present invention can solve the problem that the existing TMD only vibrates in one direction. Due to the isotropic homogeneity of the sphere, the damper can reach nearly 360°. Directional vibration reduction control effect, realizing multi-directional control vibration of the structure

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