Friction pendulum shock insulation support

Abstract

The invention discloses a friction pendulum shock insulation support which comprises an upper seat plate, a lower seat plate, glands and a spherical crown. The spherical crown is arranged between the upper seat plate and the lower seat plate; the two glands are respectively arranged above the two end parts of the lower seat plate; one ends of the glands are fixedly connected with the end part of the lower seat plate, and the other ends are connected and positioned with the upper seat plate through a positioning pin shaft; and the two ends of the glands respectively form limiting collision for the upper seat plate moving in the horizontal direction and the vertical direction. In a free state, the upper seat plate rotates relative to the spherical crown, and the spherical crown slides along the spherical surface of the lower seat plate; and the upper seat plate is positioned at the central position by the positioning pin shaft. The friction pendulum shock insulation support not only has good performance of a common friction pendulum support, but also can provide vertical pulling resistance, and when horizontal displacement exceeding a structural design occurs, the friction pendulum shock insulation support can also provide horizontal constraining force to prevent the support from falling off.

Description

technical field [0001] The invention relates to the field of building shock absorption, in particular to a friction pendulum shock-isolation support. Background technique [0002] Traditional structures adopt passive seismic strategies, relying on the damage of structural members to dissipate most of the input energy. As for the base isolation structure, an isolation layer is set between the upper structure of the building and the foundation to prevent the seismic energy from propagating upwards. At present, the most commonly used isolation products are rubber isolation bearings. [0003] The friction pendulum support achieves shock isolation by prolonging the natural vibration period of the structure. It has low sensitivity to the seismic excitation frequency range, high stability, strong stability, self-limiting, reset ability, and anti-torsion ability , Excellent comprehensive performance such as shock isolation and energy dissipation mechanism, compared with rubber shoc...

AI Technical Summary

Problems solved by technology

[0004] However, the existing friction pendulum bearings have no vertical pull-out resistance, and most of the building structures themselves are light in weight. Under the action of wind load and vertical earthquake, when the friction pendulum bearing is used for isolation, the upper cover The plates and slides will separate due to tension, causing the friction pendulum bearings to fail and the entire structure to be at risk of overturning

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