Anti-collision device capable of reducing impact force for overline T-beam bridges and mounting method of anti-collision device

Abstract

The invention discloses an anti-collision device capable of reducing impact force for overline T- beam bridges and a mounting method of the anti-collision device, and mainly aims to prevent large damage when a side main beam is impacted by an ultrahigh vehicle. The anti-collision device comprises a buffer plate which is directly impacted, an anti-collision frame on the rear side of the buffer plate, a traction rod connected with the anti-collision frame and energy dissipation ribs. The anti-collision frame moves to drive the traction rod, the traction rod drags the energy dissipation ribs, andafter the first batch of energy dissipation ribs are stretched and broken, the next batch of energy dissipation ribs are dragged. Due to large-stroke movement of the traction rod, collision energy dissipation time is prolonged, the main beam only bears acting force not exceeding the limit tension of the energy dissipation ribs, energy dissipation is achieved, and meanwhile the magnitude of external force borne by the main beam is limited. The anti-collision device can be designed according to unitization and modularization, is convenient to install, maintain and replace, and is low in manufacturing cost.

Description

technical field [0001] The invention relates to the technical fields of bridge engineering and river-crossing engineering, in particular to an anti-collision device and an installation method for a cross-line T-beam bridge that reduces impact force. Background technique [0002] Bridges are the infrastructure of national transportation and the link of national economic circulation. With the rapid development of the market economy, many three-dimensional transportation facilities have been built, and many cross-line bridges have appeared. Over-the-line bridges across railways, expressways, provincial roads, national roads, and waterways can be seen everywhere. However, in recent years, due to the headroom of the old bridges, the height of the existing large vehicles is not enough; the vehicle height limit logo pattern is not eye-catching enough, and the location is not scientific enough; the driver's traffic safety awareness is not enough and they run illegally; the traffic ...

AI Technical Summary

Problems solved by technology

Because the impact force is a concentrated force, it generally acts on the local impact point. If energy absorbing materials or energy-dissipating materials are arranged near the impact point, a large impact force will still be transmitted to the side girder web for a large impact energy. damage the side girder

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