Two-way sliding anti-drawing spherical support

Abstract

The invention discloses a two-way sliding anti-drawing spherical support which comprises an upper support plate, a spherical crown liner plate, a middle steel liner plate and a lower support plate. Aforward L-shaped cantilever is arranged on the lower surface of the upper support plate in the bridge direction. A reverse L-shaped cantilever is arranged on the upper surface of the lower support plate in the transverse bridge direction. Flanges are arranged at the upper end and the lower end of the middle steel liner plate. The flanges at the two ends are arranged in grooves of the forward L-shaped cantilever and the reverse L-shaped cantilever and are in plane sliding connection with the grooves. An arc-shaped groove is formed in the middle portion of the upper end of the middle steel linerplate. The upper surface of the spherical crown liner plate and the lower surface of the upper support plate are in plane sliding connection. A bottom cambered surface is arranged in the arc-shaped groove of the middle steel liner plate and is in spherical surface sliding connection with the arc-shaped groove. By the adoption of the design, longitudinal sliding and transverse sliding are separated, two sliding faces are arranged, support rotating and two-way sliding functions are achieved, a single-direction sliding function is stable, the displacement can be designed large, an anti-drawing effect is good, the support is not affected by support sliding, and the functions are stable.

Description

technical field [0001] The invention relates to a two-way slidable anti-pull spherical bearing, which belongs to the field of bridge bearings for bridge construction. Background technique [0002] The anti-pull ball bearing is a new type of ball bearing suitable for high-intensity areas and areas with many hurricanes, which can be widely used. Used in bridges or building structures. The pullout support is arranged between the bottom of the beam and the top of the pier or at the bottom of the building. It supports the upper structure and has a vertical limit function. It can effectively resist the overturning and collapse of the upper structure caused by factors such as earthquakes or structural partial loads. Therefore, , which can ensure that the upper and lower structures of the bridge will not be disjointed under the action of vertical earthquake or structural partial load, which plays a very important role in the seismic performance of the bridge. [0003] At present, ...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used spherical bearings have low pull-out resistance, which makes the bearings less effective in resisting the upward pulling force of the beam body, and cannot effectively prevent the beam body from falling off caused by external factors such as earthquakes and partial loads, and the structure is complex and difficult to assemble. High, high production cost

At the same time, the commonly used anti-drawing spherical bearings are generally one-way sliding bearings or the two-way sliding displacement is particularly small, and the anti-drawing force is unstable after two-way sliding, which cannot meet the requirements of bridges in special cases, especially highway bridges. Displacement usage requirements

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