Earthquake-absorbing energy-dissipating spherical bearing

Abstract

The invention discloses an earthquake-absorbing energy-dissipating spherical bearing. An upper bearing plate, a middle bearing plate, a lower bearing plate and a bottom bearing plate are arranged in sequence from the top down; the bottom surface of the upper bearing plate and the top surface of the middle bearing plate are matching sliding planes; the bottom surface of the middle bearing plate andthe top surface of the lower bearing plate are matching rotary spherical surfaces; the bottom surface of the lower bearing plate and the top surface of the bottom bearing plate are matching sliding planes; baffle plates are vertically arranged on the four sides of the bottom bearing plate; limit plates are arranged on the baffle plates; cantilevers are arranged between the lower bearing plate andthe limit plates on the four sides; one ends of the cantilevers are fixedly arranged on the lower bearing plate, and the other ends of the cantilevers abut against the limit plates on the corresponding sides; elastic damping elements are arranged between the lower bearing plate and the baffle plates on the four sides; and one ends of the elastic damping elements are fixedly arranged on the lowerbearing plate, and the other ends of the elastic damping elements are in contact with one side walls of the baffle plates on the corresponding sides. On the basis of the existing ordinary spherical bearing, the elastic damping elements are additionally arranged between the lower bearing plate and the bottom bearing plate, so as to achieve the purposes of earthquake absorption and energy dissipation.

Description

technical field [0001] The invention relates to the field of spherical bearings, in particular to a shock-absorbing and energy-dissipating spherical bearing. Background technique [0002] my country is a country with frequent earthquakes, and the occurrence of earthquakes often brings immeasurable losses to people's lives, property and public facilities. In recent years, my country's transportation construction has developed rapidly, and various types of highway bridges and high-speed railway bridges are under continuous construction and planning. Therefore, bridge seismic isolation technology is more and more widely used. At present, commonly used support-type shock-absorbing and isolation products mainly include high-damping rubber bearings, lead-core rubber bearings, nonlinear damping width bearings, and friction pendulum bearings. Both high-damping rubber bearings and lead rubber bearings are composite rubber bearings, which have poor durability and stability, and it i...

AI Technical Summary

Problems solved by technology

However, its damping performance is mainly achieved by Coulomb friction damping. Due to the limited friction coefficient, its energy dissipation capacity is limited.

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