SAMS Subject Classification Number: 23

A new model for earthquake induced oscillations in a vertical structure is presented. The foundation of the structure is considered as a rigid body attached to an adapted Timoshenko beam model and the effect of ground motion is modelled as forces acting on the foundation.

In this presentation the model is investigated numerically using the finite flement method. For the purpose of modal analysis, natural frequencies and modes are computed. The finite flement method is also used for dynamic simulations of the motion and the results are compared.