One-way movable support with jamming-prevention function

Abstract

The invention provides a one-way movable support with a jamming-prevention function, and belongs to the technical field of building and bridge supports. The one-way movable support comprises an uppersupport plate, a lower support plate, a plane sliding plate I, a spherical-crown lining plate, a spherical sliding plate, a middle steel lining plate, a plane sliding plate II and a transverse baffle.Turning and horizontal moving of the support are separated, the spherical-crown lining plate and the middle steel lining plate form a rotating pair to achieve the turning function of the support, andthe lower support plate and the middle steel lining plate form a sliding pair to achieve guiding and horizontal moving of the support. When a beam rotates, the upper support plate drives the middle steel lining plate to rotate together, after the middle steel lining plate is rotated by a certain angle, the middle steel lining plate is in line contact with the transverse baffle, the upper supportplate rotates relative to the middle steel lining plate, then the middle steel lining plate is in surface contact with the transverse baffle, and thus the transverse limiting and guiding functions ofthe support can be realized. When a plurality of supports rotate at the same time, a gap required by rotation is reserved between the transverse baffle and the middle steel lining plate of each support according to the actual rotating conditions, and thus jamming of the supports can be avoided.

Description

technical field [0001] The invention belongs to the technical field of buildings and bridge supports, in particular to a one-way movable support with anti-jamming function. Background technique [0002] For suspension bridges or cable-stayed bridges, when the cables on both sides of the transverse direction are asymmetrical, the forces on both sides of the beam are asymmetrical. Under the combined effects of system rotation, inclined bridge rotation, and temperature lateral displacement, the bridge structural system will produce in-plane rotation, and the beam end will produce a certain torsion while longitudinal displacement, that is, a certain horizontal rotation angle will occur in the horizontal plane. Since the moment arm that produces a transverse angle at the beam end is longer, the moment on the beam end is larger, and a large contact stress will be generated on the support. Therefore, the beam end support not only meets the longitudinal temperature displacement, lat...

AI Technical Summary

Problems solved by technology

[0003] Conventional one-way movable bearings can only satisfy the horizontal displacement and rotation angle of the beam body, but cannot satisfy the in-plane rotation function

Because the horizontal limit structure is a horizontal limit, and the horizontal limit is a line contact, after the horizontal rotation of the support, the upper support plate and the lower support plate are easy to get stuck, and the rotation angle depends on the distance between the guide structures. Gap, if the function of rotation is to be realized, the gap requirement is relatively large, which is not conducive to the overall stress of the bridge

Moreover, when multiple supports rotate as a whole, the required value of the rotation gap is larger. Since the rotation centers of each simultaneous rotation in the horizontal plane are inconsistent, the supports are easy to be stuck. Damage the support, or destroy the beam structure, so the existing support cannot meet the rotation requirements in the horizontal plane

Images