Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Thermo-hygro-mechanical degradation of concrete: From coupled 3D material modelling to durability-oriented multifield structural analyses
Abstract In addition to loading-induced damage, drying processes and temperature gradients may contribute considerably to the long term degradation of structures made of cementitious materials. In the paper, a 3D coupled thermo-hygro-mechanical model for concrete accounting for moisture- and heat transport, cracking and irreversible deformations and the various interactions between these processes is developed. The model is formulated on the basis of thermomechanics of partially saturated porous media in the sense of the Biot-Coussy theory. According to the coupled state equations arising from this theory, moisture and heat transport and the constitutive pre- and postcracking properties are coupled by means of macroscopic coefficients. They are determined by relating microscopic and macroscopic quantities and by exploiting symmetry relations associated with the existence of a macroscopic potential. The resulting model is based on a minimum of material parameters. As a representative example, a numerical simulation of the long-term degradation of an inner tunnel lining is described in the paper.
Thermo-hygro-mechanical degradation of concrete: From coupled 3D material modelling to durability-oriented multifield structural analyses
Abstract In addition to loading-induced damage, drying processes and temperature gradients may contribute considerably to the long term degradation of structures made of cementitious materials. In the paper, a 3D coupled thermo-hygro-mechanical model for concrete accounting for moisture- and heat transport, cracking and irreversible deformations and the various interactions between these processes is developed. The model is formulated on the basis of thermomechanics of partially saturated porous media in the sense of the Biot-Coussy theory. According to the coupled state equations arising from this theory, moisture and heat transport and the constitutive pre- and postcracking properties are coupled by means of macroscopic coefficients. They are determined by relating microscopic and macroscopic quantities and by exploiting symmetry relations associated with the existence of a macroscopic potential. The resulting model is based on a minimum of material parameters. As a representative example, a numerical simulation of the long-term degradation of an inner tunnel lining is described in the paper.
Thermo-hygro-mechanical degradation of concrete: From coupled 3D material modelling to durability-oriented multifield structural analyses
Grasberger, S. (Autor:in) / Meschke, G. (Autor:in)
2004
Aufsatz (Zeitschrift)
Englisch
| British Library Online Contents | 2004
| British Library Online Contents | 2004
| British Library Conference Proceedings | 2003