Bridge guardrail

Abstract

The invention discloses a bridge guardrail, which belongs to the technical field of bridge protection, and comprises a plurality of protective barrels arranged at intervals along the longitudinal direction of a bridge, the center of each protective barrel is rotatably connected with a rotating central shaft, the upper end of each rotating central shaft is connected to a protective handrail, and the lower end of each rotating central shaft is connected to a supporting plate; the supporting plate is connected to a main beam of a bridge through a buffering assembly; The protective handrail comprises a plurality of handrail connecting blocks and elastic pull ropes, through holes for the elastic pull ropes to penetrate through are formed in the handrail connecting blocks, and the handrail connecting blocks are sequentially connected in series through the elastic pull ropes in the longitudinal direction of the bridge. When the device is collided by a vehicle, energy dissipation buffering can be synchronously conducted on the accident vehicle in the transverse direction of a bridge, impact force borne by the protection barrel and the rotating center shaft of the protection barrel is relieved, and meanwhile the device is matched with the rotating protection barrel to prevent the vehicle from rushing out of the guardrail to cause a larger accident.

Description

technical field [0001] The invention belongs to the technical field of bridge protection, and in particular relates to a bridge guardrail. Background technique [0002] Bridges generally refer to structures erected on rivers, lakes and seas to allow vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to buildings that cross mountain streams, poor geology or meet other transportation needs to make traffic more convenient. Guardrails are usually installed on both sides of the bridge to prevent vehicles or pedestrians from falling off the bridge. In order to prevent the impact of accident vehicles, the existing bridges are often equipped with protective barrels at the guardrails. The trajectory of the vehicles is changed through the rotation and guidance of the protective barrels to prevent the vehicles from rushing out of the guardrails. However, the design of this method i...

AI Technical Summary

Problems solved by technology

In order to prevent the impact of accident vehicles, the existing bridges are often equipped with protective barrels at the guardrails. The trajectory of the vehicles is changed through the rotation and guidance of the protective barrels to prevent the vehicles from rushing out of the guardrails. However, the design of this method is insufficient. , when the protective barrel is subjected to an instantaneous impact, the impact force is mostly along the radial direction of the protective barrel, and the force cannot be transmitted to the circumferential direction of the protective barrel in time. Damaged, resulting in the failure of the protective barrel, unable to achieve the proper protective effect

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