Small-deformation friction pendulum support

Abstract

The invention discloses a small-deformation friction pendulum support. The small-deformation friction pendulum support comprises an upper support board and a lower support board, an upper sliding surface is arranged on the upper support board and provided with an upper sliding block, a lower sliding surface is arranged on the lower support board and provided with a lower sliding block, an upper concave surface is arranged on the upper sliding block, a lower convex surface matched with the upper concave surface is arranged on the lower sliding block, and the lower convex surface can slide in the upper concave surface. By means of the small-deformation friction pendulum support, the form of a middle support board in a rugby shape is changed, while a cooperation structure of the lower convexsurface and the upper concave surface is adopted, and the lower convex surface of the lower sliding block can slide in the upper concave surface of the upper sliding block; according to the small-deformation friction pendulum support, sliding energy consumption between the lower convex surface and the upper concave surface and sliding energy consumption of the inherent sliding blocks in the sliding surfaces are increased, a secondary energy-consumption structure is formed by the lower convex surface, the upper concave surface and the sliding blocks together, so that earthquake energy consumedby the sliding blocks is greatly improved, and the seismic mitigation and isolation effects of the support are improved; through embedment between the lower convex surface and the upper concave surface, relative displacement between the sliding blocks can be effectively decreased, deformation of the support can be reduced, and the support is easier to return.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a small deformation friction pendulum support. Background technique [0002] The traditional seismic method design mainly uses strength and ductility reinforcement measures to enhance the seismic performance of the structure itself. However, due to the strong randomness of earthquake motion, this structural design without self-adjusting ability may not meet the requirements of actual earthquakes. Timely security requirements or exceeding expectations lead to wasted costs. The reasonable use of shock-absorbing and isolation devices can often ensure the integrity of rare underground structures by prolonging the basic period of the structure, reducing the seismic force, and consuming seismic energy through damping, friction and other mechanisms. Setting the friction pendulum for vibration reduction and isolation is a widely used and practical method in the bridge vibration isolati...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art that the energy consumed by the seat plate in the shape of a rugby ball is limited, the shock absorption effect is poor, and the shear bolts cannot meet the different requirements of the horizontal seismic force limits in the longitudinal and transverse bridge directions. Provide a small deformation friction pendulum support

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