Circumferential viscous damping support

Abstract

The invention belongs to the technical field of seismic resistance of bridge and building projects, and particularly relates to a circumferential viscous damping support. The circumferential viscous damping support comprises an upper bearing board and a lower bearing board, wherein a support bearing body is arranged between the upper bearing board and the lower bearing board, the side edge of the upper bearing board extends downwards and bends inwards to form an annular cavity, the upper portion of the support bearing body is sleeved with an annular piston, a cavity structure is formed inside the annular piston, the upper end face and the lower end face of the annular piston are attached to the upper inner wall and the lower inner wall of the annular cavity respectively to seal the annular cavity, the interior of the annular cavity is communicated with the cavity of the annular piston, and the annular cavity is filled with viscous liquid. The circumferential viscous damping support has the functions of an ordinary ball-type steel support and a viscous damper, can resist the earthquake inertia force in various directions in the horizontal plane, and achieves the functions of energy dissipation and earthquake absorption.

Description

technical field [0001] The invention belongs to the field of anti-seismic technology of bridges and construction engineering, and in particular relates to a ring-direction viscous damping support. Background technique [0002] Earthquake is one of the frequent natural disasters. For a long time, human beings have been "powerless" in the face of this natural disaster. The direct cause of loss of life and property caused by earthquakes is the violent shaking, damage and collapse of buildings. Since the 20th century, human beings have continuously explored the structural control technology of building's earthquake resistance, energy dissipation and shock absorption, and successively invented and created the following corresponding products and technologies. [0003] Lead Rubber Bearings: Absorb and dissipate seismic energy through shear deformation of lead core and rubber. [0004] Hydraulic Viscous Damper: The flow of liquid or semi-solid viscous material in the cylinder gen...

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Problems solved by technology

[0006] Although the above-mentioned lead-core rubber bearings and frictional damping bearings can play the role of circumferential shock absorption and isolation, but the horizontal stiffness is too low, when the foundation is too soft or the pier is too soft, the shock absorption effect will be reduced, and the structure will even be increased. earthquake response

The hydraulic viscous damper is directional and has a significant effect on reducing the axial seismic action, but the direction of earthquake action on the bridge is unpredictable in advance, so its setting has a certain degree of blindness. The usual practice is to Hydraulic dampers are installed along the bridge and across the bridge, which limits its mechanical movement to a certain extent and reduces the shock absorption effect

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