Bridge anti-falling beam device with sliding damping mechanism

A technology of shock absorption mechanism and anti-drop beam, applied in bridges, bridge parts, bridge construction, etc., can solve problems such as bridge drop beam damage, improve the ability to withstand bending moments, simple installation, and avoid rigid connections.
CN112523069AActive Publication Date: 2021-03-19CHONGQING JIAOTONG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING JIAOTONG UNIVERSITY
Publication Date
2021-03-19

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Abstract

The invention relates to the technical field of bridge anti-falling beams, in particular to a bridge anti-falling beam device with a sliding damping mechanism. The device comprises a bridge pier body,a support for placing bridge decks is arranged on the bridge pier body, the ends of the two bridge decks are symmetrically placed on the support, at least two mounting grooves are symmetrically formed in the upper surface of the support along the central section, and sliding damping mechanisms, locking mechanisms and pre-limiting mechanisms are arranged in the mounting grooves. Mounting columns matched with the mounting grooves in position are arranged on the bottom face of the bridge floor, pressing bosses are arranged at the bottoms of the mounting columns, the diameter of the mounting bosses is smaller than that of the mounting grooves, the mounting bosses are located in the mounting grooves, the depth of the mounting grooves is larger than the height of the mounting columns, and the upper surfaces of the supports make close contact with the lower surface of the bridge floor. The technical scheme is used for solving the problem of beam falling damage of the bridge.
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Description

technical field

[0001] The invention relates to the technical field of bridge anti-drop beams, in particular to a bridge anti-fall beam device with a sliding damping mechanism. Background technique

[0002] Falling beam damage refers to the detachment, falling, and damage of the upper structure of the bridge from the lower structure, resulting in bridge damage, casualties, and property losses. Falling beam damage is one of the most common forms of bridge earthquake damage. The causes of falling beam failure are very complicated, mainly including the short lap length of the upper and lower parts of the bridge, too large expansion joints of the bridge superstructure and so on.

[0003] Most of the current anti-fall beam structures are arranged on both sides of the main girder. When the main girder is subjected to horizontal and vertical earthquake excitations, it may also be subjected to bending moments at the supporting parts of the pier. At this time, the anti-fall beam devi...

Claims

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