Bridge Elastic Ball Bearings

Abstract

The invention discloses an elastic spherical bearing of a bridge, which is formed by parallel connection of a rubber elastic system and a spherical bearing system, and is characterized in that: the rubber elastic system consists of an upper connecting plate, a rubber body, and a lower connecting plate Stacked from top to bottom, the spherical support system consists of an upper support plate, a stainless steel slide plate, a flat PTFE plate, a spherical crown liner, a spherical PTFE plate, and a lower support plate. The upper bearing plate is integrally connected with the upper structure of the bridge by welding or anchor bolt connection, and the lower bearing plate is connected with the lower structure of the bridge by welding or anchor bolt connection. As a whole, the present invention is ingeniously conceived. On the basis of not changing the supporting function and displacement function of ordinary spherical bearings, it adds a shock-isolation function with adjustable horizontal stiffness, and is widely applicable to girder bridges in high-intensity areas.

Description

technical field [0001] The invention relates to a bridge bearing, in particular to a bridge elastic spherical bearing. Background technique [0002] Bridges are one of the lifeline projects, and their seismic performance determines the efficiency of earthquake relief and post-disaster reconstruction. The bearing is one of the main components of the bridge and an important device to improve the seismic performance of the bridge. Commonly used bridge bearings mainly include plate rubber bearings, basin rubber bearings, spherical bearings, lead core rubber bearings, high damping rubber bearings, friction pendulum bearings, etc. Among them, the spherical bearing is widely used because of its large bearing capacity, excellent durability and good economy. [0003] Bridge spherical bearings can be divided into sliding bearings and fixed bearings according to whether they can slide in the horizontal direction. In engineering practice, these two types of bearings are usually used t...

AI Technical Summary

Problems solved by technology

It can be seen that the spherical bearing deteriorates the seismic performance of the continuous girder bridge, which limits the use of the bearing in high-intensity areas

[0004] To sum up, the horizontal restraint function limits the application of spherical bearings, so it is necessary to upgrade this type of bearings to enhance its seismic performance for a wider range of applications

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