抄録
For the purpose of understanding vibration of stadium stand due to group jumping while watching sports, the authors performed 32 persons jumping test for the actual steel framing stand and measured displacement of the stand structure. And moreover we analyzed and examined the dynamic force and the response of stand structure. Consequently, in case of substituting the static force for jumping dynamic force, static force should be 1.5 times of dynamic force in case of 32 jumping persons. Based on this result, it seems 1.3 times in case of 100 persons jumping. The relation between the number of jumping persons and the response is linear logarithmically. Therefore we can predict the response of the stand structure in case of full spectators jumping as well.
