Spatial multi-direction viscoelasticity-shape memory alloy damping system

Abstract

The invention discloses a spatial multi-direction viscoelasticity-shape memory alloy damping system. The spatial multi-direction viscoelasticity-shape memory alloy damping system comprises an annular inner cylinder, an arc-shaped middle plate, an arc-shaped outer plate, a viscoelasticity material layer, a shape memory alloy rope and a force transmission connecting unit; the plurality of arc-shaped middle plates and the plurality of arc-shaped outer plates are arranged on the outer side of the annular inner cylinder from inside to outside, and viscous-elastic material layers are arranged between the annular inner cylinder and the arc-shaped middle plates and between the arc-shaped middle plates and the arc-shaped outer plates; a plurality of shape memory alloy ropes are arranged in the annular inner cylinder, and the two ends of each shape memory alloy rope penetrate out and are fixed to the outer surface of the arc-shaped outer plate; the outer surfaces of the arc-shaped outer plates are symmetrically connected with the plurality of force transmission connecting units with the annular inner cylinder as the center axis, and the outer ends of the force transmission connecting units and the two ends of the annular inner cylinder are connected with a building. The spatial multi-direction viscoelasticity-shape memory alloy damping system has the technical advantage of having a good damping effect on vibration in any direction in space, meanwhile, the damping frequency domain of a damper is greatly widened, and the spatial multi-direction viscoelasticity-shape memory alloy damping system has good deformation resistance and recoverability.

Description

technical field [0001] The invention relates to the technical field of shock absorption of building structures, in particular to a space multi-directional viscoelasticity-shape memory alloy shock absorption system. Background technique [0002] With the development of the times, the building structure gradually develops in the direction of high, large and complex, and earthquakes and strong winds pose a huge threat to complex building structures. Under previous earthquakes and strong winds, complex (super) high-rise structures have been damaged to varying degrees, and even overturned or collapsed, causing huge casualties and economic losses. Viscoelastic damping technology is used in building structures for earthquake and wind resistance. [0003] Traditional viscoelastic dampers, such as plate viscoelastic dampers, cylindrical viscoelastic dampers, etc., often can only perform shock absorption in a single direction in one dimension and in multiple directions in a two-dimen...

AI Technical Summary

Problems solved by technology

At this time, it is difficult for the traditional viscoelastic dampers or dampers containing shape memory alloys to absorb and dissipate energy in three-dimensional and multi-directional directions of the structure, which often results in the structure being in the direction that cannot be damped (including the torsional direction of the entire structure). Excessive displacement and deformation will cause local serious damage to the structure, which will cause irreversible damage or even collapse of the overall structure

Moreover, the frequency dependence of the traditional viscoelastic damper's damping effect is strong, and it only has a good damping effect in a certain frequency domain.

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