High-energy-consumption double-curved-surface seismic mitigation and absorption support

Abstract

A high-energy-consumption double-curved-surface seismic mitigation and absorption support comprises an upper seatplate, a guide friction pair, a middle seatplate, a spherical friction pair, concentric-square-shaped steel dampers, a lower seatplate and a limiting device. The bottom surface of the upper seat plate is a concave spherical surface, the top surface of the lower seat plate is a concave spherical surface, the upper surface and the lower surface of the middle seat plate are convex spherical surfaces matched with the concave spherical surface, and the upper seat plate, the middle seat plate and the lower seat plate form a rotating mechanism of the support;limiting devices for limiting the upper seatplate are arranged on the four sides of the lower seatplate respectively. The singleside, the two sides or the periphery of the support are each provided with theconcentric-square-shaped steel damper, each concentric-square-shaped steel damper is in the concentric-squareshape; an opening is formed in one side of each concentric-square-shaped steel damper, a dislocation height difference exists at each opening, the lower free end of each opening is connected with the lower seatplate, and the higher free end of each opening is connected with the upper seatplate. The high-energy-consumption double-curved-surface seismic mitigation and absorption support has various advantages ofa double-curved-surface seismic mitigation and absorption support, has high energy dissipation capacity, can meet various seismic requirements during bridge construction, and is particularly suitablefor high-intensity and long-period seismic areas.

Description

technical field [0001] The invention belongs to the field of bridges and building structures, in particular to a hyperboloid shock-absorbing and isolating bearing with high energy consumption. Background technique [0002] my country is a country with frequent earthquake disasters. In recent decades, earthquake disasters have caused devastating disasters to some areas of our country. Under the background of my country's infrastructure development, more and more attention has been paid to the seismic problem of bridge engineering. At present, the most commonly used anti-seismic means is the use of seismic isolation technology. The anti-seismic technology mainly reduces the natural vibration frequency of the structure, increases the structural damping, and disperses the seismic force by setting anti-seismic bearings in the structure, thereby improving the overall anti-seismic performance of the bridge. Commonly used shock-absorbing and isolating bearings mainly include lead-c...

AI Technical Summary

Problems solved by technology

Hyperboloid shock-absorbing and isolating bearings have good shock-absorbing and isolating functions, stable sliding stiffness after earthquakes, and good self-resetting performance. At present, they are most widely used in bridges using shock-absorbing and isolating technology, but their damping performance mainly depends on Coulomb friction damping Realized, due to the limited coefficient of friction, its energy dissipation capacity is also relatively small

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