Anti-pulling three-dimensional rubber friction-pendulum earthquake-isolation support

Abstract

The invention discloses an anti-pulling three-dimensional rubber friction-pendulum earthquake-isolation support. The anti-pulling three-dimensional rubber friction-pendulum earthquake-isolation support comprises two concave-surface discs correspondingly arranged up and down, a rubber interlayer pad arranged between the two concave-surface discs and two earthquake-isolation discs arranged on the upper side of the concave-surface disc at the upper portion and arranged on the lower side of the concave-surface disc at the lower portion respectively; the upper side and the lower side, in contact with the two concave-surface discs, of the rubber interlayer pad are each provided with a friction slice, vertical belleville springs are connected between the concave-surface discs and the earthquake-isolation discs, first pulling cables are connected between the opposite inner sides of the two concave-surface discs, and second pulling cables are connected between the opposite inner sides of the two earthquake-isolation discs. The anti-pulling three-dimensional rubber friction-pendulum earthquake-isolation support is combined with the advantages of a rubber support and a friction-pendulum support, and the curvature of the rubber interlayer pad and the friction coefficient of a friction pendulum are designed respectively to achieve the advantages of multistage fortifying earthquake isolation; the pulling cables can provide vertical pull for improving the anti-pulling performance of the support, the vertical earthquake-isolation discs can isolate vertical earthquake motion to meet the three-dimensional earthquake-isolation requirement, and the anti-pulling three-dimensional rubber friction-pendulum earthquake-isolation support is more suitable for practical engineering and is convenient to apply and popularize.

Description

Technical field [0001] The invention is a pull-out-resistant three-dimensional rubber friction pendulum seismic isolation bearing, specifically a component suitable for seismic isolation and reinforcement of bridges and building structures. Background technique [0002] The traditional friction pendulum bearing achieves the shock isolation function through frictional energy consumption. In a traditional friction pendulum, although its period, lateral stiffness, damping, displacement capacity, etc. can all be determined independently. However, these parameters are constant values ​​under all levels of earthquake motion and displacement, which is not conducive to achieving flexible design and multiple performance goals under small, medium and large earthquakes. In order to solve this problem, multiple friction pendulum supports have been designed abroad. However, due to the complex structure of the multi-friction pendulum support, the mechanical performance stability needs t...

AI Technical Summary

Problems solved by technology

However, the traditional friction pendulum bearings have these problems that affect the mechanical properties of the bearings.

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