TORSION EFFECT ON BUILDINGS SUBJECTED TO SEISMIC LOAD

Mohamed Draidi BENSALAH, M. BENSAIBI

Résumé


Abstract:
Complex forms are often used for the design of buildings. This is induces the torsion
phenomenon which could be disastrous in case of seismic event. To reduce it effects, the
torsion must be taken into account through ever regulation or modelling. This paper, deal with
the last one. A simplified method including the torsion effect is used. This method is based on
the theory of Lie?s groups. This model consider the six degrees of freedom of a structure, then
the deformations, the internal efforts, the dynamic eccentricity and the mass participation
factors are determined. The results obtained, on a building of the research centre ISPRA in
France and a building with three colons, are satisfactory.

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