| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction method and a control system for incrementally launching a bridge girder, which make the bridge girder smoothly launched by concurrently using a extrusion jack along with a self-propelled incremental launching truck. SOLUTION: In this construction method for incrementally launching the bridge girder, the bridge girder, the leading end of which is connected to a launching machine, is placed and supported on the plurality of longitudinally arranged launching trucks 10 and 20, and erected by being launched from one bridge pier to the other bridge pier. The launching machine is self-propelled by having wheels rotated by driving motors 18 and 28 mounted on the launching trucks, until the launching machine reaches the bridge pier as a launching destination. The incremental launching truck is pushed out and moved by the extrusion jack 32, after the launching machine reaches the bridge pier as the launching destination. The driving motors 18 and 28 are driven for a given length of time, when extrusion is started by the extrusion jack 32. COPYRIGHT: (C)2006,JPO&NCIPI
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