Self-resetting friction pendulum three-dimensional seismic mitigation and isolation support

Abstract

The invention provides a self-resetting friction pendulum three-dimensional seismic mitigation and isolation support. A concave blind hole is formed in the center of a lower support plate (4); a seismic reduction layer (7) and vertical seismic reduction springs (8) are arranged on the bottom of the concave blind hole; upper parts of the vertical seismic reduction springs (8) are connected to a spherical surface slide plate (3); a hinge slide block (2) is arranged on the top of the spherical surface slide plate (3); an upper spherical surface of the hinge slide block (2) is positioned in a slide block accommodation chamber (12) under an upper support plate (1); a counter-force plate (6) is arranged on the periphery of the upper part of the lower support plate (4); and horizontal seismic reduction springs (5) are positioned between the counter-force plate (6) and an outer peripheral wall of the slide block accommodation chamber (12). The self-resetting friction pendulum three-dimensionalseismic mitigation and isolation support is of a circular structure; the horizontal seismic reduction springs and the vertical seismic reduction layer can improve the durability and the seismic isolation performance of the friction pendulum seismic mitigation and isolation support; and the horizontal seismic reduction springs can fully play the energy-dissipating capacity of the counter-force plate, and can achieve three-dimensional seismic mitigation and isolation of the support under the action of extreme loads such as earthquakes and typhoon.

Description

technical field [0001] The invention relates to a self-resetting friction pendulum three-dimensional vibration isolation bearing, belonging to the technical field of vibration isolation (vibration) control of bridges, houses and other structures in the field of civil engineering. Background technique [0002] my country is located in the Pacific Rim Seismic Belt-Eurasian Seismic Belt. Earthquakes occur frequently. Earthquakes have brought unbearable losses to people's lives and properties. The development of new seismic isolation devices to enhance the seismic performance of buildings and bridge structures is the key to ensuring the safety of people's lives and properties. [0003] In recent years, seismically isolated structures (such as seismically isolated buildings, seismically isolated bridges, etc.) have been widely used and exhibited good seismic performance during earthquakes. Friction pendulum isolation bearing is widely used in engineering structure vibration isol...

AI Technical Summary

Problems solved by technology

At present, the research and development of new friction pendulum isolation bearings such as "a friction pendulum isolation bearing with variable curvature", "a two-way variable curvature friction pendulum isolation bearing", "friction pendulum isolation seat and support monitoring system", "a three-dimensional seismic isolation support", but the limit device of this type of friction pendulum seismic isolation support can only rely on one side limit device to provide limit, consumption On the other hand, only relying on frictional damping energy dissipation, as time increases, the energy dissipation performance of frictional energy dissipation materials will gradually decrease under the action of periodic loads, and the energy dissipation mode is single

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