Rail guide type bridge anti-seismic stop block device

Abstract

The invention discloses a rail guide type bridge anti-seismic stop block device which comprises concrete check blocks poured at the two ends of a bent cap; a sliding surface body is arranged on the inner sides of the concrete stop blocks, and the sliding surface of the sliding surface body is a concave curved surface which changes from high to low from the outer side to the inner side of a bridgeand faces a main beam. Two sides of the bottom end of the upper sliding surface of the bent cap are respectively provided with a concrete anchor block, and the bent cap corresponding to the two concrete anchor blocks in the outer side direction of the bridge is respectively provided with a vertical groove of which the cross section size is slightly greater than that of the concrete anchor blocks;a horizontal straight steel plate is fixed to the side wall of the main beam corresponding to the sliding surface, a curved steel plate with an upward convex face is fixed to the outer side edge of the straight steel plate, a steel sliding rod is fixed to the tail end of the curved steel plate and abuts against the bottom end of the sliding surface, and the two ends of the steel sliding rod are connected with concrete anchor blocks through carbon fiber cloth. The structure is simple, the force transmission path is clear, the super-strong tensile capacity of the carbon fiber cloth can be brought into full play during a strong earthquake, excessive transverse displacement of the main beam of the bridge structure is effectively restrained, and the anti-seismic property of the bridge structureis remarkably improved.

Description

technical field [0001] The invention relates to the technical field of bridge anti-seismic and bridge anti-seismic isolation, in particular to a rail-guided bridge anti-seismic block device. Background technique [0002] As a large earthquake-prone country in China, previous earthquake disasters have shown that reasonable and effective bridge structure seismic isolation measures can significantly reduce earthquake disasters and their secondary disasters, and thus can greatly reduce the repair and reinforcement costs of bridge structures after earthquakes, but it is often found that Due to the insufficient lateral limit of the bridge structure, the main girder of the bridge structure has a transverse girder drop accident, which causes huge losses to people's lives and properties. As an important transportation link across deep mountains and valleys and connecting the two banks of rivers, bridges play a very important role in promoting national political, economic, cultural an...

AI Technical Summary

Problems solved by technology

After reading a large number of domestic and foreign documents and examining existing bridge anti-seismic, anti-seismic and isolation patents, the applicant found that many bridge anti-seismic stoppers or limit devices have a single function, but basically they have not realized staged anti-seismic, some The device does not yet have a self-resetting function, and its manufacture is difficult, requires high precision, high cost, and complicated parts replacement

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