Transverse Damping Device Applicable to Long-span Bridges

Abstract

The invention discloses a transverse damping device applicable to a large-span bridge. The damping device comprises an upper top plate, a lower bottom plate, an upper connecting plate, a U-shaped steel plate, a cushion block, an anchor bolt, a high-strength bolt, bolt holes and a slotting hole, wherein the bolt holes are reserved in the upper top plate and the lower bottom plate, and the upper top plate and the lower bottom plate are respectively and firmly connected with a bridge girder and a bridge tower; the U-shaped steel plate is an energy-consumption element, and is arranged between the upper top plate and the lower bottom plate; the upper connecting plate is reserved with the bolt holes and is fixed below the upper top plate through the anchor bolt; a straight section on the upper part of the U-shaped steel plate is arranged between the upper top plate and the upper connecting plate and is not in contact with the upper top plate; a straight section on the upper part of the U-shaped steel plate is reserved with the bolt hole, the slotting hole is reserved in the upper connecting plate, and the straight section at the upper part of the U-shaped steel plate is connected with the upper connecting plate through the high-strength bolt capable of freely sliding in the slotting hole. According to the damping device provided by the invention, the instant impact force generated in the process of converting the transverse structural system of the large-span bridge can be resisted, and the anti-seismic property of the large-span bridge can be improved.

Description

technical field [0001] The invention belongs to the technical fields of civil engineering and earthquake engineering, and specifically relates to a transverse damping device arranged at the lower beam of the main tower of a long-span bridge structure, which is used to reduce the transverse shock transmitted from the main beam to the bridge tower under the action of an earthquake. The impact force controls the lateral relative displacement between the bridge tower and the main girder, and at the same time meets the longitudinal displacement requirements of the long-span bridge during normal use and earthquakes. Background technique [0002] Earthquake is a kind of natural disaster, and strong earthquake will bring huge disaster to human beings. Throughout history, my country's earthquake disaster ranks first in the world, which is characterized by high frequency, wide distribution, and large magnitude. In the 20th century, more than 600 earthquakes of magnitude 6 or above oc...

AI Technical Summary

Problems solved by technology

However, a large instantaneous impact force will be generated during the transformation of the structural system, which will have a greater impact on the shock absorber and the overall structure or even damage it.

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