On dynamics of a structure with a frictional foundation

Dynamics of a rigid structure with a frictional foundation is considered. The basic nonlinear equations of motion are derived and discussed. A computer program for calculations of the time histories of motions is developed and several examples are studied. The special cases of step, sinusoidal and actual earthquake ground accelerations are treated in detail and the amount of slidings of structure with respect to is foundation are calculated and discussed On etablit les equations non lineaires du mouvement. On developpe un programme de calcul de l'evolution des mouvements. Exemple d'un sol soumis a des accelerations sinusoidales, decrites par une fonction unite ou conformes a un seisme reel. Calcul des taux de glissement de la structure par rapport a sa fondation