Seismic isolation support with viscoelastic damping balls

Abstract

The invention provides a seismic isolation support with viscoelastic damping balls. The seismic isolation support is characterized in that a fence is arranged in the middle of the upper side of a lower plate, recessed curved surfaces are formed in the fence and arrayed with the center of the lower plate as the center, the balls are arranged in the recessed curved surfaces, a viscoelastic damping material layer is arranged in the fence, channels are formed outside the fence and further arrayed with the center of the lower plate as the center; a grinding layer is arranged on the lower side of an upper plate, the surface of the grinding layer is provided with viscoelastic damping material, pulling resistant slot plates correspond to the channels of the lower plate and are in matched connection with the channels, and springs are arranged in the pulling resistant slot plates and connected with the channels. The seismic isolation support has the advantages that the defects of the conventional seismic isolation device are overcome, seismic isolation capacity is improved, the shaking energy is damped, cost is lowered, effect is good, guiding significance is achieved in the field of actual seismic isolation of the fixed buildings, and practical and promotion value is high.

Description

technical field [0001] The invention relates to the technical field of fixed buildings, and anti-vibration or vibration of buildings, in particular to a viscoelastic damping rolling ball shock-isolation support. Background technique [0002] Seismic isolation structures have great advantages compared with traditional seismic design structures, and it has a good prospect to enhance the ability of buildings to resist earthquake disasters by using seismic isolation structures with isolation layers. The development of a new type of isolation bearing with excellent isolation performance is an important guarantee for improving the anti-seismic performance of isolation structures. [0003] The basic seismic isolation bearings currently used mainly include: laminated rubber bearings, friction slip isolation bearings, rolling pendulums, rolling balls, roller bearings and other bearings, and combined isolation. Among them, laminated rubber bearings are the most widely used, reaching ...

AI Technical Summary

Problems solved by technology

On the other hand, its quality and performance are difficult to distinguish from the appearance, and it has a strong quality concealment

[0009] ③It is difficult to paste with other materials: rubber is generally difficult to connect with the concrete surface of the building. In rubber shock-isolating pads, special adhesives are generally used to connect the rubber with the connecting steel plate, which also increases the cost.

[0010] ④ Relatively little experience in the use of materials: compared with steel and concrete, rubber as the main structural material lacks experience in use

Although the rolling ball plus spring return device has a good shock isolation effect, its position limiting ability is not good. When the earthquake is strong, the rolling ball may roll out from the bottom plate, and the positioning of the rolling ball is also very troublesome.

Such as the Chinese patent authorized and announced on May 23, 2001, the announcement number is CN2431333Y, which discloses a new type of building isolation and energy consumption device. The sliding layer, the upper and lower contact surfaces are spherical, and the rolling ball is equipped with a concave reset plate shock isolation device. Due to the existence of the rolling ball, it has a good shock absorption effect, and the groove can effectively control the rolling of the rolling ball. And the positioning is also convenient and reliable, but since there are no other measures to limit the rolling amount of the rolling ball, the rolling ball may still roll out from the concave reset plate

And only relying on rolling ball friction to dissipate energy is not enough for the consumption of earthquake force

The ball disc spring vibration isolation bearing authorized in February 2012, the announcement number ZL201020265000.1, is a public vibration isolation device, and the SMA wire is arranged around the steel plate to increase the energy dissipation capacity and the reset ability of the ball. The cost of the SMA wire High, and will break under large displacement

Images