High-friction antivibration support and preparation method thereof

Abstract

The invention discloses a high-friction antivibration support and a preparation method of the high-friction antivibration support, belonging to the technical field of bridge supports. The high-friction antivibration support has the main technical characteristics that the high-friction antivibration support comprises a lower base plate, a middle base plate and an upper base plate, wherein a low-friction coefficient plane friction pair is arranged between the upper base plate and the middle base plate, a low-friction coefficient spherical friction pair is arranged between the middle base plate and the lower base plate, a bottom plate is arranged below the lower base plate, a high-friction coefficient plane friction pair is arranged between the lower base plate and the bottom plate, and a laminated rubber block is arranged between the upper base plate and the bottom plate. According to the high-friction antivibration support, the high-friction coefficient plane friction pair is mainly used for dissipating earthquake capability in the earthquake. When horizontal displacement is generated between the upper base plate and the bottom plate, the laminated rubber block generates shear deformation. Horizontal restoring force is provided through the laminated rubber block, lateral bearing stiffness of a series system of bridge piers and the support is smaller than that of bridge piers, so that the effects of prolonging the period and reducing the earthquake response can be achieved.

Description

technical field [0001] The invention belongs to the technical field of bridge supports, in particular to a high-friction shock-absorbing and isolation support and a preparation method thereof. Background technique [0002] Under the action of longitudinal bridge earthquake, the fixed piers of continuous girder bridges and the fixed supports or lateral movable supports above bear most of the horizontal inertia force of the superstructure. If the longitudinal displacement of the fixed support or the lateral movable support is not allowed (that is, the support is not allowed to be damaged), the horizontal force transmitted by it will be quite large, and the design is very difficult. In addition, the fixed pier and its foundation will also bear a large horizontal force, which causes difficulties in design. Even if the ductility design can be adopted for the pier to allow plastic hinges to appear, according to the principle of capacity protection design, the foundation cannot be...

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Problems solved by technology

At present, the shock-absorbing and isolating bearings used in engineering often have disadvantages such as high price, unstable performance, inconvenient installation, and difficult maintenance.

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