Soil-structure interaction with time-dependent behaviour of both concrete and soil

Abstract

As the consideration of soil-structure interaction is increasingly being incorporated into design practice, there is a need for solutions that consider the most relevant aspects of the behaviour of both the concrete and the soil, some of which are time-dependent. The present work introduces a model that suits both the structure and the foundation -including the supporting soil -allowing the coupled analysis of hardening on cure, creep, shrinkage and cracking of concrete, and consolidation of soil. Both the structure and the foundation are modeled as one-dimensional finite elements. The timedependent behaviour of the concrete and soil is modeled using Kelvin chains. For the structural elements, a mixed finite element formulation is used. Validation tests were conducted in the proposed modeling, comparing its results with available experimental and analytical data. The study of a reinforced concrete continuous beam supported by foundations on consolidating clay considering the time-dependent behaviour of the materials showed considerable changes in the effects of the soil-structure interaction.

A Method for Determination of Moment Contribution Ratio under Foundation Rotation in Shear Wall-Frame Systems

“…Alexandre et al [32] introduced a model that facilitates the coupled analysis of concrete and soil, incorporating time-dependent aspects such as hardening, creep, shrinkage, cracking of concrete, and soil consolidation. The one-dimensional finite element modeling, utilizing Kelvin chains for time-dependent behavior, demonstrated significant changes in the effects of SSI, particularly in the study of a reinforced concrete continuous beam on consolidating clay.…”