Closed type hard isolation protection facility suitable for railway bridge deck

The utility model relates to the technical field of isolation and protection, and discloses a closed hard isolation and protection facility suitable for a railway bridge deck, which comprises a channel, a ballast blocking wall arranged on the side surface of the channel, a handrail vertically and fixedly arranged on the upper side of the channel far away from the ballast blocking wall, and foot planks arranged on the upper side of the channel at equal intervals, first supporting columns are vertically arranged at the positions, corresponding to the ballast blocking walls, of the side face of the channel at equal intervals, second supporting columns are vertically arranged at the positions, corresponding to the handrails, of the side face of the channel at equal intervals, and first isolation frames are obliquely and fixedly installed on the side faces, away from the channel, of the first supporting columns. In the utility model, the hoop reinforces the fixation between the second pillar and the handrail, and