Author(s)

G.D. Hatzigeorgiou, D.E. Beskos

Abstract

Inelastic response of 3-D underground structures in rock under seismic loading G.D. Hatzigeorgiou & D.E. Beskos Department of Civil Engineering, University of Pair as, Greece Abstract This paper describes the development of a numerical approach to compute the inelastic response of three-dimensional underground structures (mainly tunnels) to seismic loading. The solution is obtained using the finite element method for the surrounding rock medium and the boundary element method for the shell liner, both in the time domain. It is assumed that there is no interaction between the rock medium and the concrete liner. This enables one to analyze the two different bodies separately and determine the response of the liner by imposing on it the displacements of the rock cavity computed under the influence of the seismic waves. Both the rock medium and the concrete liner are assumed to behave inelastically on the basis of the continuum damage mechanics theory. The seismic waves are assumed to hav

Keywords