| 摘要 |
PURPOSE: A prevention system for a falling bridge is provided to prevent a loss of lives by preventing the falling of a floor slab of a bridge. CONSTITUTION: The prevention system(500) for a falling bridge is installed between an upper girder box(200) and an abutment structure(100) by fastening a prevention frame of a falling bridge and a fixing frame for a prevention frame to prevent the breakdown of a floor slab. The prevention frame of a falling bridge is completed by forming a U-shaped groove to fix to an upper box girder(200), forming many bolt holes, forming a connecting plate to the side of the U-shaped groove, forming to fix with the fixing frame for the prevention frame and fixing to the upper box girder(200) through many bolt holes installed on the U-shaped groove. The fixing frame of the prevention frame is formed in the shape of an I beam and completed by forming bolt holes on the upper and lower part of a gusset plate, fixing a separation preventive unit to the upper and lower bolt holes using a fastening bolt, and fastening an anchor bolt to the lateral bolt hole to be fixed to an abutment structure(100). |
