Large-tonnage anti-marine corrosion metal damping and shock-absorbing steel support

Abstract

The invention discloses a large-tonnage marine corrosion prevention metal damping seismic mitigation and isolation steel supporting seat. The supporting seat comprises an upper supporting seat plate, a spherical crown liner plate and a lower supporting seat plate, wherein the spherical crown liner plate is mounted between the upper supporting seat plate and the lower supporting seat plate and consists of an upper liner plate and a lower liner plate; an liner plate mounting groove is formed in the lower supporting seat plate; the lower liner plate is fixed in the liner plate mounting groove; the upper liner plate is fixedly connected to the upper supporting seat plate; the outer bottom wall of the upper liner plate is in contact with the liner mounting groove; the bottom surface of the upper liner plate is in sliding fit with the top surface of the lower liner plate, and the fitting surface is a spherical crown surface; the outer side of the upper liner plate is provided with a falling-off prevention stopper fixedly connected with the upper supporting seat plate; the bottom surface of the falling-off prevention stopper is fixed with one end of an anti-seismic stopper through a shearing-resistant bolt; the other end of the anti-seismic stopper is in contact with the outer wall of the upper liner plate; a gap is reserved between the outer wall of the falling-off prevention stopper and the outer wall of the upper liner plate; and the a metal damper is mounted between the upper supporting seat plate and the lower supporting seat plate on the outer side of the falling-off prevention stopper. When an earthquake occurs, the supporting seat has a two-stage protecting structure, so that the supporting seat main body cannot be damaged, and falling off of beams can be avoided.

Description

technical field [0001] The invention relates to a spherical steel support, in particular to a large-tonnage marine corrosion-resistant metal damping shock-absorbing and isolation steel support. Background technique [0002] The spherical steel bearing was successfully developed in China in the late 1980s. Compared with other bearings, it has obvious advantages in bearing capacity, rotation, temperature adaptability and service life. It has been widely used in roads and railways. , municipal and other bridge projects. [0003] At present, the large-tonnage spherical steel bearings used in bridge engineering are basically of the first-class anti-seismic type, that is, according to the horizontal bearing capacity requirements proposed in the design, a stopper is set on both sides of the lower bearing plate of the bearing, The stopper is fixed to the upper bearing plate to bear the horizontal load. Once the horizontal force produced by accidental factors such as earthquakes ex...

AI Technical Summary

Problems solved by technology

Once the horizontal force produced by accidental factors such as earthquakes exceeds the ultimate bearing capacity of the block, the block will be cut and the horizontal restraint structure will be lost. At this time, the situation of falling beams may not be caused for cable-stayed bridges or suspension bridges (because There are cables to pull the girder body), but it is extremely unfavorable for arch bridges, and there is no measure that can be relied on again

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