Search of the Optimal Position of Sails

During its history, Algeria has suffered several destructive earthquakes. According to the observations made during these earthquakes, the Algerian seismic regulation: RPA 82, RPA 83 and RPA 99 revised en 2003, seems insufficient and the buildings have suffered considerable damage. Which explains the presence of failures and insufficiencies in the Algerian seismic code.To resolve this problem, several researchers have advocated the introduction of bracing sails to improve the behavior of structures against the earthquake. In the Algerian seismic regulation, no article is related to this parameter. The objective sought in this study is to study the influence of the position of bracing sails on the behavior of structures across: the ductility demand µD, inter-floor displacement Dp and stiffness Kp at the performance point, the elastic stiffness Ke and the overall degradation indicator of the structure Id. the results obtained showed that the best arrangement of the bracing sails is that which are placed at the end of the structure with perfect symmetry.