Novel bridge vortex-induced vibration suppression device replacing protective guard

The novel bridge vortex-induced vibration suppression device is characterized in that the novel bridge vortex-induced vibration suppression device comprises a plurality of suppression assemblies composed of protective railings and grids, the protective railings are longitudinally arranged on a bridge floor main beam, heightening grids are transversely arranged at the bottoms of the protective railings, and the grids are transversely arranged at the upper portions of the protective railings; the centers of the two ends of the grid and the heightening grid are movably connected with the protective barrier and can be turned over and opened around the joint. According to the utility model, the formation of vortex vibration is inhibited from the source, the grid can be completely opened at a dangerous wind speed, the wind drag coefficient is reduced, the main beam is prevented from being subjected to an overlarge wind drag load, and the opening height of the grid can be adjusted in a targeted manner by the intelli