Variable-damping anti-falling beam structure

Abstract

The invention relates to the technical field of bridges, and particularly discloses a variable-damping anti-falling beam structure. The variable-damping anti-falling beam structure comprises a bridgepier, a first main beam and a second main beam, a partition plate support is arranged between the first main beam and the second main beam. A first damping structure is arranged between the first mainbeam and the second main beam; the partition plate support is connected with the pier through a second damping structure. The first damping structure comprises a first energy consumption strip-shapedplate, a second energy consumption strip-shaped plate and a pressing mechanism. The first energy dissipation strip-shaped plate is fixedly arranged on the end face of the first main beam. According to the variable-damping anti-falling beam structure, the damping rigidity of energy consumption of the device can be adjusted according to season requirements, so that the device can be kept in a goodworking state all the time, and bridge falling is prevented.

Description

technical field [0001] The invention relates to the field of bridges, and specifically discloses a variable damping anti-drop beam structure. Background technique [0002] When the bridge is subjected to a strong earthquake, the bridge will bear a large load in an instant, resulting in a large displacement. The displacement exceeds the shelving length of the beam or the beam will fall due to insufficient strength of the stopper, which will cause irreparable damage. serious loss. The anti-fall beam is a connection measure structure used in the bridge structure to resist earthquakes and prevent the beam body from falling or disengaging. The current common practice is to add anti-fall beams between the main girders to prevent the longitudinal or lateral displacement of the main girders. [0003] Due to changes in temperature, thermal expansion and contraction of the main girder will easily cause changes in its axial length. The energy-consuming damping stiffness of conventiona...

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Problems solved by technology

[0003] Due to changes in temperature, thermal expansion and contraction of the main girder will easily cause changes in its axial length. The energy-consuming damping stiffness of conventional anti-fall beam construction measures is not adjustable, so the change of the main girder has caused the working performance of the anti-fall beam decline, often unable to meet the needs of their work

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