A kind of anti-wind ball bearing

Abstract

A wind-resistance spherical supporting seat comprises a convex spherical steel lining plate and a concave spherical steel lining plate. A middle subplate, the convex spherical steel lining plate and the concave spherical steel lining plate are arranged in a pelvic cavity of a supporting seat base plate in sequence; the plane side of the convex spherical steel lining plate is matched with the middle subplate in a sliding mode, the convex spherical surface of the convex spherical steel lining plate is matched with the convex spherical surface of the concave spherical steel lining plate in a sliding mode, the plane side of the concave spherical steel lining plate is matched with a supporting seat top plate in a sliding mode; a rotary mechanism of the supporting seat is formed by the convex spherical steel lining plate and the concave spherical steel lining plate, the functions of bridge horizontal load and rotation of the supporting seat are achieved; and an interval is left between the middle subplate and a supporting seat bottom plate, butterfly-shaped springs are arranged in the interval, and thus an elastic supporting mechanism is formed. The wind-resistance spherical supporting seat can freely and flexibly rotate in all directions, has a buffering impact on waggle, caused by bridge horizontal wind power or earthquake force, of a bridge girder, and normal sliding and rotation of a girder body in the vertical direction or the vertical bridge direction are guaranteed; and the demands of the large bearing capacity and large angle rotation of the girder body are met, the durability of the supporting seat is good, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of bridge structures, and is a bridge support product, in particular to a wind-resistant spherical support applied to suspension bridges and cable-stayed bridges. Background technique [0002] Due to the structural form of long-span bridges, the lateral external load is much greater than the longitudinal external load, so lateral wind and earthquake resistance is particularly important, especially for cable-stayed bridges and suspension bridges where the beam body is usually in a floating or semi-floating state. The horizontal seismic and wind resistance of the body itself is required, and it is also required to meet the requirements of the horizontal bridge displacement, longitudinal bridge displacement and vertical bridge displacement of the girder body, as well as the corners of each direction, so as to ensure the safe and healthy operation of the bridge. [0003] At present, the transverse seismic and wi...

AI Technical Summary

Problems solved by technology

[0005] 1. The rotation of the wind-resistant basin-type support is mainly realized by the compression deformation of the rubber block, and the rotation angle of the support is small, which cannot meet the design requirements of a large rotation angle;

[0006] 2. Due to the limitation of the pressure bearing performance of the rubber block, it is difficult to produce and form the large-diameter rubber block, and the wind-resistant basin type support cannot be designed with a large bearing capacity;

[0007] 3. In addition, at low temperature, the rubber block is easy to age and harden, which will affect the bearing and bearing rotation performance;

[0011] (1) When the rotation angle of the support is large, in order to meet the requirements of the rotation angle, the central through hole of the spherical crown steel lining plate is larger, so that the pressure bearing area of ​​the spherical crown steel lining plate becomes smaller, and the support is difficult to achieve the requirement of large bearing capacity , so it is difficult to meet the needs of large rotation angle and large bearing capacity at the same time;

[0012] (2) Due to the continuous vibration of the bridge vehicle, the central connecting rod of the support is constantly in a state of tension and compression vibration, so the central connecting rod of the support is prone to tension and compression vibration fatigue, resulting in bearing failure of the support

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