Tunnel steel plate ring staggered bolting fixing device

The utility model provides a staggered bolting and fixing device for tunnel steel plate rings. The staggered bolting and fixing device comprises a plurality of steel plate rings, the steel plate rings are arc-shaped plates, and the multiple steel plate rings are connected to form an arc-shaped structure in a surrounding mode. The bracket reinforcing pieces are connected and fixed to the steel plate rings at the two ends of the arc-shaped structure; and the two bracket reinforcing pieces are connected and fixed through the reinforcing connecting pieces. The device is provided with a plurality of steel plate rings connected in sequence, bracket reinforcing pieces arranged at the two ends of the connected steel plate rings and reinforcing connecting pieces for connecting the bracket reinforcing pieces at the two ends, and a closed-loop supporting structure is formed among the steel plate rings, the bracket reinforcing pieces and the reinforcing connecting pieces, so that uniform stress can be realized; and meanw