Abstract
This report deals with the seismic damages of cranes. A lot of industrial facilities suffered from the Great East Japan Earthquake on March 11, 2011. As the damage of cranes, it is classified roughly in the damage by earthquake vibration and the damage by a tsunami. In the case of earthquake vibration, many overhead travelling cranes were damaged Especially, elongation and break of the volts which suppressed a run rail to support occurred. In addition, the damage was seen in the run rail base structure of container crane. Furthermore, the wheel of the overhead travelling cranes and the gantry cranes came off its axle. In the case of tsunami, the damage of unloaders and container cranes happened The great east Japan earthquake investigation/proposal subcommittee stated in JSME, and investigation of the damage situation has been carried out. In addition, Japan Crane Association investigated the damage of cranes, and the situation has been clarified. In this report, the damage patterns, problems of cranes and improvement points are shown based on knowledge that was provided from damage investigation.
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