Rigid rolling stone collision-prevention device for bridge pier

Abstract

The invention discloses a rigid rolling stone collision-prevention device for a bridge pier. The device comprises a concrete structure (1), an arc-shaped track (2), blocking bars (3) and a section steel guardrail structure (4), wherein the arc-shaped track (2) is arranged on one side, on which rolling stones move, of the concrete structure (1), and the arc-shaped surface of the track is tangential to a steep mountain body (6); the blocking bars (3) are arranged on the surface of the arc-shaped track (2), and are used for preventing the rolling stones to move; the section steel guardrail structure (4) is arranged on the top of the concrete structure (1), and is parallel to the width direction of the concrete structure (1). The device is generally built in front of a bridge pier needing to be protected along the movement locus of rolling stones, the motion energy of the rolling stones is reduced rapidly by means of buffering of different collision, consumption of energy by kinetic-potential conversion, consumption of energy by local damages to materials and energy absorption by flexible deformation of steel, and collision of the rolling stones to the bridge pier is prevented.

Description

technical field [0001] The invention relates to a bridge pier anti-rolling stone collision device, in particular to a bridge pier anti-rolling stone collision device based on rigid design. The anti-rolling stone collision device is a new type of pier anti-rolling stone collision device suitable for mountainous areas, which can change the rolling path of rolling stones through arc surface design and replace the material damage of local components to release energy to prevent rolling stones from directly hitting the pier. Background technique [0002] In order not to damage the vegetation and the surrounding environment, highway bridges in mountainous areas often use high pier foundations to directly cross valleys. However, once a landslide occurs accompanied by rolling stones, the bridge piers exposed to the rolling stone movement route are easily hit by the rolling stones, resulting in structural damage, which in turn affects its bearing capacity and durability, and even bri...

AI Technical Summary

Problems solved by technology

However, once a landslide occurs accompanied by rolling stones, the bridge piers exposed to the rolling stone movement route are easily hit by the rolling stones, resulting in structural damage, which in turn affects its bearing capacity and durability, and even bridge piers were severely cracked by boulder impacts And finally demolition and reconstruction examples, for example, tens of thousands of cubic meters of earth and rocks crashed down at the bridge in my country, and a 50-ton boulder knocked down a bridge pier, causing the 100-meter-long bridge deck to completely collapse and be damaged

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