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Soil structure interaction

About: Soil structure interaction is a research topic. Over the lifetime, 3653 publications have been published within this topic receiving 48890 citations.


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Journal ArticleDOI
TL;DR: In this paper, a finite element method with the effect of soil-fluid-structure interaction was developed to calculate bridge natural frequencies, where the effective mass above the soil surface was used to find the first natural frequency in each direction.

46 citations

01 Jan 2004
TL;DR: In this article, the authors investigated the response of shallow foundations subjected to strong earthquake shaking and showed that seismic loads transmitted onto shallow foundations in such cases will most probably induce significant nonlinear inelastic action in the soil and soil−foundation interface.
Abstract: The study investigates the response of shallow foundations subjected to strong earthquake shaking. Nonlinear soil-foundation effects associated with large deformations due to base uplifting and soil failure are examined in comparison with the conventional linear approach. Soil behavior is represented with the elastoplastic Mohr-Coulomb model. The interplay between foundation uplifting and soil failure of the bearing capacity type is elucidated under static and dynamic conditions. Research on seismic soil−foundation interaction in the last three decades has mostly relied on the assumption of linear (or at most equivalent-linear) viscoelastic soil behavior and fully−bonded contact between foundation and soil. Seismic design of structure foundation systems has followed a somewhat parallel path : the still prevailing "capacity design" philosophy allows substantial plastic deformation in the superstructure but requires that no significant "plastification" should take place below the ground level. This means that : • foundation elements must remain structurally elastic (or nearly elastic) • bearing−capacity soil failure mechanisms must not be mobilized • sliding at the soil−foundation interface must not take place, while the amount of uplifting must be restricted to about ½ of the total contact area. However, seismic accelerograms recorded in the last twenty years, especially during the Northridge 1994 and Kobe 1995 earthquakes, have shown that very substantial ground and spectral acceleration levels can be experienced in the near−fault zones. Seismic loads transmitted onto shallow foundations in such cases will most probably induce significant nonlinear inelastic action in the soil and soil−foundation interface. Figure 1 illustrates the three possible types of foundation−soil nonlinearity. Observations in past earthquakes confirm the above argument. The most dramatic examples of bearing−capacity and uplifting failures of building foundations took place in the city of Adapazari, during the Kocaeli 1999 earthquake. But such phenomena are not limited to buildings : as an example of a modern monumental bridge, we mention the Rion−Antirrion cable−stayed bridge, the surface foundations of which, despite their colossal 90 m diameter, had to be designed allowing for sliding, uplifting and partial mobilization of soil rupture mechanisms to resist the prescribed high levels of seismic excitation (Pecker & Teyssandier 1998, Gazetas 2001).

46 citations

Journal ArticleDOI
TL;DR: In this paper, a numerical model for the prediction of free field vibrations due to vibratory and impact pile driving is presented, where the response of the soil is dominated by a vertically polarized shear wave and Rayleigh wave.

46 citations

Journal ArticleDOI
TL;DR: In this article, a Boundary Element Method (BE) is presented for static analysis of piled rafts in which all the interactions between the plate, the pile and the soil are simultaneously considered.
Abstract: This paper presents a Boundary Element Method formulation for the static analysis of piled rafts in which all the interactions between the plate, the pile and the soil are simultaneously considered In this approach the soil is treated as an elastic linear homogeneous half space, the plate is assumed to be thin and both are represented by integral equations Each pile is represented by a single element and the shear force along it is approximated by a second-degree polynomial The pile-tip stress is assumed to be constant over the cross-section The cap–soil interface is divided into triangular elements and the contact pressure is assumed to vary linearly across each element The vertical displacement of each node in the plate and in the piles is represented by an integral equation so that a set of linear equations is obtained involving the tractions and displacements at all nodal points on all the interfaces From these equations the nodal displacements and the overall stiffness of the system can be calculated Numerical results are presented and they correspond closely to those obtained by other authors

46 citations

Journal ArticleDOI
TL;DR: In this paper, an averaged constitutive model of concrete and reinforcing bars for the RC structure and the path-dependent Ohsaki model for the soil are applied, and an elasto-plastic interface model which considers the thickness of the interface is proposed for seismic analysis of underground RC structures.

46 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202378
2022179
2021209
2020174
2019182
2018190