Three-dimensional gear type self-resetting energy dissipation and seismic isolation support

Abstract

The invention relates to the technical field of anti-seismic safety, in particular to a three-dimensional gear type self-resetting energy dissipation and seismic isolation support. The support comprises an upper limiting plate, an upper rubber layer, an upper support plate, a toothed ellipsoid rotating body, a lower support plate, a lower rubber layer and a lower limiting plate in sequence from top to bottom. The upper support and the lower support are connected through a plurality of shear keys, and rubber sealing rings are arranged on the outer sides of the shear keys. The upper limiting plate is connected with the main beam through studs, and the lower limiting plate is connected with a cover beam through studs. Through the meshing effect of the gears, the ellipsoid with the gear in themiddle shifts under the strong shock effect, meanwhile, the stress area is not changed, stress is uniform, the overturning danger is reduced, the rotating angle of the ellipsoid rotating body is limited through limiting check blocks on the two sides of a gear ring, and the phenomenon that different components are disengaged from one another is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of anti-seismic safety, in particular to a three-dimensional gear type self-resetting energy-dissipating shock-isolation support. Background technique [0002] Destructive earthquakes occur frequently in our country and even in the world, and bridge structures are prone to damage under the action of earthquakes. As a pivotal project of the traffic lifeline, if the bridge is damaged under the action of an earthquake, it will not only cause huge economic losses, but also affect the effective implementation of rescue work. Therefore, for bridges in earthquake-prone areas, seismic performance is one of the important factors restricting their safety. Bearings are one of the key components that determine the seismic performance of bridges. In recent years, in order to improve the seismic performance of structures, shock-absorbing and isolating supports are usually installed at the position of the supports. Throu...

AI Technical Summary

Problems solved by technology

Although it has the function of lifting the main beam to dissipate energy, the force-bearing area in the lifting state is too small, which can easily cause the friction pendulum bearing to separate from each other under strong earthquakes.

At the same time, the existing shock-absorbing and isolation bearings can only adapt to the displacement and deformation of the bridge in the longitudinal direction, which limits the lateral displacement and deformation capacity of the bridge, making it difficult to exert the maximum shock-absorbing and isolation effect

At the same time, the existing shock-absorbing and isolating bearings have insufficient anti-falling parts, and the safety performance needs to be improved

At the same time, under the action of an earthquake, the friction pendulum support cannot be completely reset when there is residual displacement of the friction pendulum, the earthquake excitation is small, or the self-weight of the upper structure is insufficient.

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