High-damping rubber ring limiting one-way movable pot type rubber bearing

Abstract

The invention discloses a high-damping rubber ring limiting one-way movable pot type rubber bearing which comprises a one-way movable pot type rubber bearing body. The high-damping rubber ring limiting one-way movable pot type rubber bearing is characterized in that top plate extension plates are fixedly connected with the two unmovable sides of a top plate of the one-way movable pot type rubber bearing body, and a stop dog is hung on the bottom face of each top plate extension plate; bottom tray extension plates are fixedly connected with the two unmovable sides of a bottom tray of the one-way movable pot type rubber bearing body, two adaptive supports are welded to the upper surface of each bottom tray extension plate, and high-damping rubber rings are fixed on the two opposite faces of the two corresponding adaptive supports; each stop dog is arranged between the two corresponding high-damping rubber rings, and intervals between each stop dog and the two corresponding high-damping rubber rings both ranges from 50 mm to 300 mm. According to the high-damping rubber ring limiting one-way movable pot type rubber bearing, under the earthquake action, overlarge displacement of the bearing in the movable direction can be restrained, joint load carrying of all bridge piers of a bridge can be achieved, the anti-quake performance of all the bridge piers is fully exerted, the earthquake energy is dissipated, the production technology and the installation technology of an existing one-way movable pot type rubber bearing can continue to be used, and the engineering application and restoring after an earthquake are convenient.

Description

technical field [0001] The invention relates to a one-way movable basin-type rubber bearing for a bridge, which belongs to the field of civil construction. Background technique [0002] Bearings are functional components that connect bridge girders and piers. The main girder of the bridge will stretch and rotate during work due to temperature and other reasons. The bridge support can eliminate the restrictions on the above deformation of the main girder by the bridge piers through proper structure, so that the main girder can expand and rotate freely. [0003] Bridge supports can be divided into three categories according to their motion characteristics. One is fixed supports, which can only meet the needs of the main girder rotation of the bridge, and cannot slide in the length and width directions of the main girder; the other is one-way movable supports. In addition to the rotation function, this type of support can also limit the displacement of the main beam of the bri...

AI Technical Summary

Problems solved by technology

[0006] Under the action of earthquake load, the existing one-way movable basin bearing can only transmit a small horizontal seismic force (3%-6%) through the friction between the PTFE plate and the stainless steel plate, see the traffic industry standard of the People's Republic of China, " Basin Rubber Bearings for Highway Bridges" (JT / T391-2009)), there is no special device to restrict the displacement in the active direction, and it is prone to unrecoverable excessive displacement during earthquakes, and there is no seismic energy dissipation function. The level of the main girder of the bridge Most of the earthquake action is transmitted to the bridge piers by the fixed bearings, so that the earthquake internal force of the bridge piers with fixed bearings is much larger than that of other bridge piers, and the damage is also more serious than other bridge piers (see Wenchuan Earthquake Highway Earthquake Damage Investigation - Bridges, People's Transportation Publishing House, 2012.3, ISBN 978-7-114-09590-0), can not give full play to the seismic capacity of each pier in the bridge

Images