Vibrations in Neighborhood Buildings Due to Rock Concert in Stadiums

Abstract eng:
Rock concerts events in the River Plate Stadium in Buenos Aires (and other stadiums) has raised neighborhood complains due to molest vibrations felt by the inhabitants of some buildings at distances up to 3 km. In this paper are described the results of the studies conducted to determine the origin and the effects on buildings of vibrations generated during rock concerts in stadiums. First, are presented the equations for modeling: a) the coordinate jump of the public on the field and the generated load; b) the acceleration wave propagation over the surface of an elastic solid and c) the response of buildings at different distances from the stadium. The resulting equations are used to estimate the accelerations at top of buildings at distances inside a 3 km radio from the stadium. Then, the planned and obtained measurements during the concerts are shown and evaluated. Finally the conclusions and recommendations in relation with the effects of the coordinate jump of the public on the field, the properties of the affected buildings, their distance to the stadium and the effects on the structures, contents and inhabitants are presented. It is shown that for buildings in resonance with the spectator jumps (2 Hz of natural frequency, i.e. buildings around 10 to 12 stories at Buenos Aires), the acceleration level at the upper stories is sever to persons (even is not high enough to produce structural and non structural damage) to distances of more than 3 km from the stadium.

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