ASSESSMENT OF THE DYNAMIC STRUCTURAL RESPONSE OF SOCCER STADIUMS GRANDSTANDS BASED ON THE USE OF BIODYNAMIC MODELS

Resumo

Over the years, many soccer stadiums in Brazil have been designed to withstand accidental
loads (people loads) to be of static type (4kN/m2). However, based on the changes in the people’s
behaviour, especially in soccer matches, through the action of groups of fans and also with the use of
these structures for music shows, these structural systems have been subjected to dynamic impacts
related to the dynamic nature of the applied loads. Therefore, some of these stadiums have presented
excessive vibration problems and have required an effective consideration of the dynamic loadings in
the structural design. This way, this research aims to study the dynamic behaviour and evaluate the
structural system performance of the Brasilia National Stadium grandstands, when the human comfort
is considered, incorporating the effect of the people-structure dynamic interaction, based on the use of
biodynamic models representative of the people. It should be noted that the stadium was designed and
constructed to be used at the World Cup 2014, held in Brazil. Finally, a human comfort assessment
was performed on the investigated grandstands and the results are compared with those provided by
design standards and international recommendations. The presented results show the relevance of the
dynamic analysis in the structural design of soccer stadiums grandstands and the influence of the
people-structure dynamic effect with respect to obtaining relevant data for human comfort of this type
of structure.