Author(s)

J. Šejnoha & P. Procházka

Abstract

Numerical approach to one problem of structure-subsoil interaction J. Sejnoha & P. Prochazka Czech Technical University Prague, Czech Republic Abstract The goal of this paper is to introduce an energy-based approach to interac- tion between • a creeping upper structure, and • a subsoil undergoing consolidation. Following the variational formulation the numerical, finite element-based procedure, is proposed. We start by analysing interaction between individual phases character- izing transport processes in porous media. A set of differential equations describing these phenomena is derived. The main difficulty occurs when linking both the upper structure and subsoil. The displacement field might be incompatible along the interface between the two parts of the system considered. The remedy is to apply the modified Lagrange principle to the equilibrium equations pertaining to both sub domains separately. Conversion of the principle of virtual work to the Lagran

Keywords