Separated friction support with adjustable horizontal bidirectional mechanical parameters

Abstract

The invention discloses a separated friction support with adjustable horizontal two-way mechanical parameters. The support comprises a rotating plate, a longitudinal translation plate, a longitudinal friction cylinder, a two-way translation plate, a transverse friction cylinder and a fixed plate from top to bottom. Wherein a spherical crown body at the lower part of the rotating plate is attached to a concave surface at the upper part of the longitudinal translation plate to form a pair of rotating friction surfaces so as to bear the rotation of the support in a horizontal plane; the longitudinal translation plate, the longitudinal friction cylinder and the bidirectional translation plate are overlapped to form two pairs of sliding friction surfaces so as to bear the translation of the support along the horizontal longitudinal direction; the bidirectional translation plate, the transverse friction column body and the fixing plate are overlapped to form two pairs of sliding friction surfaces so as to bear translation of the support in the horizontal transverse direction. Compared with the prior art, the horizontal deformation of the support is decomposed into translation and rotation in the two vertical directions in the plane, the friction surfaces in the two horizontal directions can be designed respectively, so that different requirements of mechanical properties in the two directions are met, and meanwhile, the energy dissipation capacity of the support under the action of earthquakes and the like is improved.

Description

technical field [0001] The invention relates to a separated friction bearing, which belongs to the structural shock isolation technology in the field of civil engineering, in particular to a separated friction bearing with adjustable horizontal and bidirectional mechanical parameters. Background technique [0002] In the field of civil engineering, seismic isolation bearings are usually set between the building structure foundation and the main structure, and between the upper main girder of the bridge structure and the lower pier to reduce the deformation of the upper structure under earthquake action. Shock bearings include lead rubber bearings, friction pendulum bearings, etc. [0003] Under the action of earthquake, the isolation bearing mainly undergoes translational and rotational deformation in the plane. In order to quantitatively describe the deformation of the bearing, its translational deformation is generally decomposed into the vector sum of the deformations in...

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Problems solved by technology

At the same time, this type of seismic isolation bearing generally has the same mechanical properties in all horizontal direction...

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