Bidirectional variable-curvature variable-friction pendulum type tuned mass damper

Abstract

The invention provides a bidirectional variable-curvature variable-friction pendulum type tuned mass damper. The supporting seat plate of the bidirectional variable-curvature variable-friction pendulum type tuned mass damper comprises a seat plate body, the seat plate body is provided with a contact face matched with a lower sliding face of a sliding block, the contact face is a concave arc face, a plurality of spherical concave faces which are in smooth connection are sequentially arranged on the contact face from bottom to top, a friction layer is arranged on each spherical concave face, and the friction layers are arranged on the spherical concave faces. The radiuses of the plurality of spherical concave surfaces are sequentially reduced from bottom to top, and the friction coefficients of the friction layers of the plurality of spherical concave surfaces are sequentially increased from bottom to top. The bidirectional variable-curvature variable-friction pendulum type tuned mass damper can provide a stable and continuous self-adaptive effect and an excellent bidirectional damping and energy dissipation effect for a controlled structure under different environmental loads, and the purpose of effectively controlling vibration of the structure in three main shaft directions under a Cartesian coordinate system at the same time through one inertial mass block can be achieved; the structure is simple, and the construction is convenient.

Description

technical field [0001] The invention relates to the technical field of vibration reduction (vibration) control of highly flexible structures, in particular to a two-way variable curvature variable friction pendulum tuned mass damper. Background technique [0002] In recent years, with the rapid development of social economy, a large number of super high-rise buildings and large-span flexible structures have emerged all over the world. The safety and comfort of high-flexible structures under earthquake and wind loads have aroused widespread concern. Tuned Mass Damper (TMD) is widely used in vibration control of highly flexible structures because of its relatively low cost and high effectiveness in controlling structural vibration. [0003] TMD can be divided into shear motion TMD and pendulum motion TMD according to the different implementation methods of its stiffness elements. Among them, the shear TMD and the traditional pendulum TMD need more space to set up stiffness e...

AI Technical Summary

Problems solved by technology

Among them, the shear TMD and the traditional pendulum TMD need more space to set up stiffness elements (springs, rails, suspension cables, etc.) and damping elements (oil dampers, etc.) to ensure the shock absorption control efficiency of TMD. Will result in reduced utilization and benefits of structural space

The traditional friction pendulum TMD provides a relatively strong frictional damping force under a small environmental load, so that the frictional pendulum TMD cannot effectively absorb energy and amplify the structural response, and provides a relatively weak frictional damping force under a large environmental load. Reduce energy consumption efficiency of friction pendulum TMD

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