Author(s)

S.A. Medrano, P. Obernhuber & G. Zenz

Abstract

Direct time domain numerical procedures to analyze the transient dynamic response of reservoir-dam-soil systems are compared. Emphasis has been given to the modelling of the dam-soil interaction. The dam is modelled by the finite element method, water is modelled using a displacement-based Lagrangian element. The foundation has been considered in five ways: (a) by assuming a rigid foundation; (b) by including a significant massless portion of the foundation rock; (c) foundation rock as a viscoelastic half-space represented by a stiffness and a damping matrix, computed by neglecting the frequency dependence of the dynamic stiffness of the soil, assuming the first eigenfrequency of the dam as the only one relevant to system; (d) the same as (c) but neg

Keywords