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Large cranes used in outdoors are typical large structures that receive big influences by the wind. However, unlike long bridges, whose design generally involves wind tunnel testing to check how they are affected by winds, there are only a limited number of reported cases in which cranes have undergone wind tunnel testing. Since a crane consists of multiple members of different vibration properties, it produces three-dimensional vibrations. Therefore, it is necessary to conduct a wind tunnel test using an overall model, excluding cases for the examination of the local vibrations of members. Based on the results of wind tunnel tests with cranes that have been conducted, this paper has reported the special vibration properties of cranes and effective wind-resistant measures, and described the precautions on producing a model that must be adopted when conducting a wind tunnel test in order to solve the wind problem of large structures in the future, as well as the evaluation method.
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