Bridge Seismic Block Structure with Buffer Energy Dissipation

Abstract

The invention discloses a bridge anti-seismic block structure for buffering energy dissipation. Concrete anti-seismic blocks are respectively arranged at both ends of a cover beam; The exposed part is exposed between the outer surface of the block and the outer surface of the beam body; a steel plate perpendicular to the wave-shaped steel bar is welded on the embedded part of the beam body corresponding to the wave-shaped steel bar; the exposed part of the wave-shaped steel bar and the steel plate cantilever A layer of rubber is wrapped on the end. The present invention can very effectively weaken the impact on the anti-seismic block of the bridge when the transverse displacement of the beam body is too large under the action of the earthquake through the bending deformation of several wave-type steel bars and the outsourcing rubber layer, and dissipate the seismic energy, reducing the risk of beam falling accidents This is very beneficial to the earthquake resistance of the entire bridge structure.

Description

technical field [0001] The invention relates to the technical field of bridge anti-seismic and bridge anti-seismic isolation, in particular to a bridge anti-seismic block structure for buffering and energy dissipation. Background technique [0002] In recent years, my country has experienced several major earthquakes. It is not uncommon for bridge structures to be damaged or even catastrophically collapsed due to various bridge seismic isolation measures or unreasonable structural design. This will have a serious impact on the rescue and reconstruction work in earthquake-stricken areas. Therefore, how to ensure that the bridge structure satisfies the requirements of "not damaged by small earthquakes, repairable by moderate earthquakes, and not collapsed by major earthquakes" has always been a hot topic in bridge engineering research, so as to reduce the impact of earthquake disasters on people. direct and indirect economic losses. [0003] Under the action of strong earthquak...

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Problems solved by technology

[0003] Under the action of strong earthquakes, the beam body is likely to produce a large displacement in the transverse bridge direction. If no reasonable and effective buffer energy dissipation structure is installed on the transverse stopper, it is easy to cause the stopper to be partially damaged or even cause a transverse beam fall accident. It will inevitably increase the cost of post-earthquake maintenance and reinforcement. The main reason is that the impact of the beam body on the block has not been effectively buffered or reduced under the action of the earthquake, and the energy during the impact has not been dissipated.

[0004] After reading a large number of domestic and foreign documents and patents on bridge anti-seismic, anti-seismic and isolation aspects, the applicant found that many bridge anti-seismic devices start from the anti-seismic block itself, and rarely add buffer energy dissipation anti-seismic structures outside the anti-seismic block At the same time, the manufacturing process of these devices is more complicated and the cost is higher

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