An anti-drop beam device for preventing lateral deviation

Abstract

The invention relates to the technical field of bridges, and specifically discloses an anti-drop girder device for preventing lateral deviation, including a main girder, a bridge pier for supporting the main girder, and a rotational energy dissipation device arranged between the main girder and the pier device, the bottom of the main girder is provided with an arc-shaped protrusion, and the upper end of the pier is provided with a ring groove, and the protrusion is slidably fitted with the ring groove; the rotation energy dissipation devices are several groups, and the rotation energy consumption The energy-dissipating devices are sequentially connected from the beginning to the end along the outer side of the circular guide rail, and the sliders of each group of rotating energy-dissipating devices slide and fit with the circular guide rail. The device of the present invention is used to be installed between bridge piers and bridges, and prevents excessive lateral displacement between bridges by limiting the energy consumption of the arc displacement of the main girder, and solves the problem of shock absorption and energy consumption prevention of bridges under the action of earthquakes. The effect of falling beams.

Description

technical field [0001] The invention relates to the technical field of bridges, and specifically discloses an anti-drop beam device for preventing lateral deviation. 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-drop beam is a connection measure structure used in the bridge structure to resist earthquakes and prevent the beam body from falling or disengaging. It can be seen from previous strong destructive earthquake disasters that the bridge beam itself is extremely rare due to direct seismic force. , but due to insufficient support length, failure of support connectors, etc., the phenomenon of falling beams, main beam movement, distortion, cracks, etc. often occurs, among ...

AI Technical Summary

Problems solved by technology

The lateral displacement of the main girder is mostly reflected in the lateral displacement of the main girder with one end as the fulcrum and the rotation of the other end. Some anti-fall beam construction measures in the prior art cannot effectively control the lateral displacement of the main girder. Restrictions may easily lead to the occurrence of bridge beam drop

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