| 摘要 |
PROBLEM TO BE SOLVED: To provide a repairing method capable of preventing the progress of a fatigue crack formed in a steel girder subjected to repeated loads and restoring the strength having been degraded by the occurrence of the cracks. ! SOLUTION: A resin such as an epoxy resin or an urethane resin is injected into a fatigue crack 2 having occurred in a steel girder 1 to receive repeated loads, and a fiber containing reinforcement material 4 is adhered around the fatigue crack 2 thereby to suppress the progress of the fatigue crack. The fiber containing reinforcement material 4 can be exemplified by the strand of carbon fibers worked into a sheet shape. ! COPYRIGHT: (C)2015,JPO&INPIT |
