Abstract

ORTIZ, Albert Ricardo; GOMEZ, Daniel  and  THOMSON, Peter. Characterising the human-structure interaction effect of the Olympic Stadium in Cali, Colombia. Ing. Investig. [online]. 2009, vol.29, n.1, pp.13-23. ISSN 0120-5609.

This paper presents the results of analysing the human-structure interaction effect of the Olympic Stadium in Cali, Colombia. Acceleration in the southern and western grandstands due to ambient vibration, free vibration and forced vibration tests were measured during football matches and musical performances. The data was processed using the power spectrum and time-frequency distribution, thus characterising the crowd motion for each of these events. A laboratory setup consisting of a rigid single stand was tested for characterising the jumping and damping effect of a person with regard to their posture. The loads obtained from such characterisation were incorporated into a finite element model of the southern and western grandstands to calculate the structures’ structural response. A coupling effect was observed between the loads caused by the crowd and the corresponding structural response. An increase of up to 200% in the damping of the human-structure system was observed when the structure was fully occupied by a crowd. Colombian national building code provisions for the dynamic loading of structures due to crowds are discussed.

Keywords : human-structure interaction; Olympic Stadium; crowd motion; power spectrum; time-frequency distribution.

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