| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of disassembling and removing a support beam capable of shortening a traffic interruption time and an upper support beam. SOLUTION: After a bridge 3 is constructed through the upper support beam 6 constructed by supporting it on a lower support beam, a supporting lateral beam 14 having a moving device on the bridge 3 is so installed as to be extended from the bridge 3. A suspended member 16 is suspended from the extension end part of the supporting lateral beam 14 through a jack 15 or a hoist. After the upper support beam 6 is moved in the bridge axis direction with the upper support beam 6 supported on the lifted support member 16, the upper support beam 6 is disassembled and removed. The upper support beam used for the method of disassembling and removing the upper support beam 6 is also provided. COPYRIGHT: (C)2009,JPO&INPIT
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