A frictional pendulum shock-absorbing and isolating bearing with functions of resisting tension and restraining torsion

Abstract

The invention belongs to the technical field of building and bridge structures, and relates to a friction swinging type shock absorption and shock insulation support with stretching resisting and torsion preventing functions. The support comprises a top plate (1), an upper seat plate (2), a middle seat plate (3), a lower seat plate (4) and a bottom plate (5), and is provided with four arc-surface friction pairs; the arc surface of the upper surface and the arc surface of the lower surface of the middle seat plate are arranged in a 90-degree staggered mode, namely, the upper arc surface of the upper surface and the arc surface of the lower surface of the middle seat plate are arranged in the shape of a cross; the slipping direction of the lower seat plate (4) relative to the bottom plate (5) and the middle seat plate (3) is perpendicular to the sliding direction of the upper seat plate (2) relative to the top plate (1) and the middle seat plate (3); ten sliding grooves and ten buckled sliding way structures formed by sliding blocks in a matched mode are formed between the top plate (1), the upper seat plate (2), the middle seat plate (3), the lower seat plate (4) and the bottom plate (5) respectively to ensure that the support has the stretching resisting function in the whole sliding process; furthermore, the buckled sliding way structures can only ensure that the support slides in sliding ways, and therefore the support has the torsion preventing function all the time in the horizontal direction.

Description

technical field [0001] The invention belongs to the technical field of buildings and bridge structures, and relates to a frictional pendulum shock-absorbing and isolating support with the functions of resisting tension and restraining torsion. Background technique [0002] Building tension can be regarded as the overturning force caused by horizontal seismic load or wind load and the upward force of vertical seismic vibration exceeding the self-weight of the structure. Buildings using seismic isolation technology, especially those with large height-to-width ratios or light-weight space structures, when subjected to earthquakes or wind loads, the overturning moment will cause a large column tension, which is prone to overturning instability question. Twisting of buildings is also one of the main factors causing damage. The most fundamental point to ensure the stability of the building under torsion is how to guide the building to move in a predetermined horizontal direction...

AI Technical Summary

Problems solved by technology

It meets the requirements of normal use of buildings and bridge structures under non-seismic conditions, and has the functions of seismic isolation, tension resistance and torsion suppression during earthquakes, so as to solve the problems existing in existing buildings and bridge seismic isolation bearings

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