Device for improving anti-overturning capability of single-column pier bridge under action of extreme load

Abstract

The invention discloses a device for improving the anti-overturning capacity of a single-column pier bridge under the action of an extreme load, and belongs to the technical field of structural engineering. The device comprises three mass blocks, linear slideways corresponding to the mass blocks, a rolling device and an arc-shaped rolling slideway corresponding to the rolling device. The mass blocks and the rolling device are connected into a whole through steel strands. When the eccentric effect of an extreme vertical overload vehicle reaches a certain level, a box girder inclines, the sliding way of the rolling device deform in the inclining direction of the box girder, at the moment, the rolling device rolls towards the sinking face of the box girder, then the mass blocks move in the reverse direction, the mass blocks provide opposite bending moments, and the anti-overturning capacity of the single-column pier bridge is improved. After the eccentric action of the extreme vertical overload vehicle, the rolling device moves towards the center line of the cross section of the box girder due to the gravity action of the rolling device, and then the mass blocks move back to the original position through the steel strands until the rolling device returns to the position between two limiting blocks, and the whole device is restored to the initial state.

Description

technical field [0001] The invention relates to a device for improving the anti-overturning capacity of a single-pillar pier bridge under extreme load, and belongs to the technical field of structural engineering. Background technique [0002] With the rapid development of my country's urban economy, the requirements for urban bridges are getting higher and higher, and single-pillar bridges are more and more used in cities because of their advantages of saving land, beautiful appearance, transparent vision, and smooth lines. , become an important life hub project of the city. However, the bridge with single-pillar piers may encounter the eccentric action of extreme vertical overload vehicles, which will cause the bridge with single-pillar piers to overturn and collapse, which will bring huge economic losses and casualties to the city. [0003] At present, the anti-overturning control of urban single-pillar bridges is mainly to strengthen the substructure of the bridge. Incl...

AI Technical Summary

Problems solved by technology

[0004] The invention aims to overcome the defects that the space under the bridge will be compressed during the reinforcement process of the single-column pier bridge in service in the city, which will affect the urban traffic during construction, and proposes a single-column pier bridge anti-overturning capacity lifting device under the action of extreme loads

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