| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotunda preferable to the extension of a boarding bridge that can realize a short delivery period at a low cost by dispensing with a foundation work and shortening a construction period.SOLUTION: A two-pronged rotunda 10A, used for a boarding bridge that is attached by fixation on the fixed bridge side and serves as a passageway relay part by coupling the base end part of a tunnel part that forms a passenger boarding-alighting passageway with the tip part side in contact with the boarding port of an aircraft, comprises a coupling port 12A for a construction building where a rotunda body 11A forming a space part serving as the passageway relay part is coupled with a boarding-alighting opening on the fixed bridge side and coupling ports 13A and 14A for a plurality of tunnels directly or indirectly coupled with the base end part side opening of the tunnel part. |
