Self-adaptive multi-spherical face rubbing sliding vibration insulating support saddle

Abstract

The invention provides a self-adaptive multi-spherical face rubbing sliding vibration insulating support saddle, relating to large buildings such as building and bridge and the like, comprising an upper support saddle plate, an upper sliding disc, a movable sliding block comprising an upper and a lower spherical gap, a lower sliding disc and a lower support saddle plate; the concave spherical face of the upper support saddle plate is internally connected with the upper sliding disc; the concave spherical face of the upper sliding disc is connected with the concave spherical face of the lower sliding disc by the movable sliding block composed of the upper and the lower spherical gaps; the convex spherical face of the lower sliding disc is connected with the concave spherical face of the lower support saddle plate; the upper spherical gap of the movable sliding block is positioned in the groove of the lower spherical gap; the upper and the lower spherical gaps are respectively provided with convex spherical faces. The support saddle in the invention has self-adaptive property for automatically adjusting rigidity and damping in countable and controllable displacement range based on different spherical faces with same or different curvature radii and friction coefficients; the support has simple structure, great upright bearing force, large level displacement, good service durability and clear vibration absorbing mechanism; the support saddle is applied to the large-span bridges and other large buildings with high requirement of vibration absorbing property.

Description

Technical field [0001] The invention relates to a support device for structures such as buildings and bridges, in particular to an adaptive multi-spherical friction sliding vibration isolation support applied to long-span bridges and other large structures. Background technique [0002] In order to ensure that lifeline projects such as buildings and bridges perform their due functions in earthquakes and reduce earthquake disasters, traditional seismic design concepts take three levels of "small earthquakes not broken, fortification intensity repairable, and large earthquakes not falling" as the fortification goals. Engineering structures rely on structural deformation to absorb and consume seismic energy. When the structure encounters an earthquake of medium and small intensity, it is feasible to rely on the structure and structural components to absorb and consume the seismic energy. However, when a structure encounters a major earthquake or a rare earthquake, it is difficult t...

AI Technical Summary

Problems solved by technology

[0004] Due to the low vertical bearing capacity and poor durability of various rubber bearings, they cannot be used alone in long-span bridges with heavy superstructures and other large structures.

[0005] The friction pendulum system has a good effect on small and medium-span bridges, but due to a single friction surface, its stiffness and damping characteristics cannot be changed during the movement of the support, and there is no self-adaption

Under strong earthquakes, the amplitude of horizontal displacement is limited, and it is difficult to ensure the large displacement of long-span bridge structures under strong earthquakes

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