Numerical simulation of soil-structure interaction in framed and shear-wall structures

Abstract

This paper deals with the modeling of the plane frame structure-foundation-soil system. The superstructure along with the foundation beam is idealized as beam bending elements. The soil medium near the foundation beam with stress concentrated is idealized by isoparametric finite elements, and infinite elements are used to represent the far field of the soil media. This paper presents the modeling of shear wall structure-foundation and soil system using the optimal membrane triangular, super and conventional finite elements. Particularly, an alternative formulation is presented for the optimal triangular elements aimed at reducing the programming effort and computational cost. The proposed model is applied to a plane framecombined footing-soil system. It is shown that the total settlement obtained from the nonlinear interactive analysis is about 1.3 to 1.4 times that of the non-interactive analysis. Furthermore, the proposed model was found to be efficient in simulating the shear wallfoundation-soil system, being able to yield results that are similar to those obtained by the conventional finite element method.

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

“…The main parameter to assess the implications of an interaction analysis is the relative stiffness between the structure and the foundation (Lee and Brown, 1972;Gusmão, 1990). Several studies were carried out to analyze the influence of different factors affecting this stiffness, such as three-dimensional effect (Majid and Cunnell, 1976), number of floors (Goschy, 1978;Lopes and Gusmão, 1991), construction sequence (Brown and Yu, 1986), soil nonlinearity (Jardine et al, 1986), soil constitutive model (Noorzaei et al, 1995), interface elements (Dalili et al, 2014), and even the presence of wall columns (Dalili et al, 2011) and brick panels (Hora, 2014).…”

Influence of Relative Density and Pile Spacing on the Behavior of Building Frame Resting on Pile Groups - A Numerical Study

“…The term soil structure interaction (SSI) can be defined as the interaction of different structural elements (i.e., sub structure and super structure) and soil. The influence of super structure on the substructure is reported in the literature [6][7][8][9][10][11] which are limited to study the response of the shallow foundations. Stiffness matrix method was used by Buragohain et al [12] and Chore and Sawanth [13] used finite element models to understand the interaction effect when super structure is resting on pile foundations.…”