A large-angle high-friction shock-absorbing and isolating bearing

Abstract

A large-corner high-friction shock-absorbing and shock-isolating support comprises a left laminated rubber block and a right laminated rubber block, a bottom plate, a lower seat board, a middle seat board, an upper seat board, a low-friction-coefficient friction pair, a high-friction-coefficient friction pair, a shearing pin, a stopper and a vertical follower mechanism, wherein horizontal displacement occurs between the upper seat board and the bottom plate, and the laminated rubber block has shearing deformation for providing a restoring force; both the stopper and the shearing pin are used for bearing the horizontal force; the stopper has relatively high designed bearing capacity and cannot be destroyed under the action of any earthquake; the shearing pin has relatively low designed bearing capacity and can be sheared under the action of a great earthquake; the low-friction-coefficient friction pair is used for meeting requirements of corners; the high-friction-coefficient friction pair is used for dissipating earthquake capability. The large-corner high-friction shock-absorbing and shock-isolating support provides vertical bearing capacity and horizontal bearing capacity in normal use, can meet the requirement for deformation of relatively big corners of a long-span bridge and a long-span spatial structure, effectively reduces the seismic response of a bridge structure under the action of the earthquake, and ensures the anti-seismic safety of the bridge.

Description

technical field [0001] The invention belongs to the field of anti-seismic safety of structures, and relates to a support for preventing bridges and space structures from being damaged under earthquake action. Background technique [0002] In order to prevent bridges and space structures from being damaged under earthquakes, shock-absorbing and isolating devices (or shock-isolating supports) are often installed at the position of the support, and the horizontal inertial force of the upper structure is reduced by extending the period of the shock-isolating support. The displacement response of the earthquake is reduced by the energy dissipation of the shock-isolation bearing. Therefore, its substructure often does not need special design, and the cost is relatively low. While providing a certain shock-absorbing and isolating capability, the shock-absorbing and isolating bearing also needs to meet the requirements of the daily use of the structure. [0003] At present, the sh...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a large-angle high-friction shock-absorbing and isolating bearing, which meets the requirements of normal use under non-earthquake conditions and the requirements of shock absorption and energy consumption under earthquakes, so as to solve the problems existing in existing products

The invention has the advantages of large corner deformation capacity, low price, high friction coefficient, small support height, large horizontal displacement, easy and accurate control of horizontal stiffness and large variation range, and no lifting phenomenon, which can completely overcome the existing space reduction Disadvantages of shock mounts

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