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.

Soil pressure on box culverts

Abstract: Study critically examines the provisions of the American Association of State Highway and Transportation Officials' (AASHTO) "Standard Specifications for Highway Bridges," relative to design of reinforced concrete box culverts. This paper deals specifically with two topics: soil pressure analysis was performed by finite element modeling taking into account soil-structure interaction. The analysis confirms previous field observations that the AASHTO provisions considerably underestimate soil loading. Formulas are proposed for prediction of more realistic soil pressures. Influence of the proposed soil pressures on culvert size and reinforcement is demonstrated by numerical examples. Both the working stress design and the strength design methods are employed. It is shown that, even with the increase in soil pressures as suggestsed, use of the more rational strength design method could result in material savings.

Structure‐soil‐structure interaction of adjacent buildings subjected to seismic loading

Abstract: The effects of soil-structure interaction (SSI) on the seismic response of different types of structures has been thoroughly investigated in the past 4 decades. Yet, the phenomenon of structure-soil-structure interaction (SSSI) was often overlooked. The present study aims at the rigorous investigation of the interacting effects of adjacent buildings in a two dimensional setting. The soil medium was assumed as a viscoelastic half-space modeled using plane strain finite elements. The aforementioned unbounded half-space is simulated utilizing the state-of-the-art perfectly matched layers implemented in the finite element method (FEM). The problem of the SSSI is solved in frequency domain. In order to fully model the stories below the ground level for the case of high-rise buildings, special modifications were considered for the interaction of the structure and the soil medium due to presence of spatially varying ground motion on the boundary of excavated region. The effect of different parameters such as foundation moduli and distance between adjacent buildings were investigated and the results were compared with models built using the conventional rigid foundation assumption. The results of the study showed that the interacting effects of adjacent building are prominent and need to be considered in the seismic design of buildings.

Full-height piled bridge abutments constructed on soft clay

Abstract: Full-height piled bridge abutments constructed on soft clay are prone to lateral soil–structure interaction effects resulting from placement of the retained fill, and associated deformation of the underlying soil. The interaction increases lateral structural loading and displacement, and hence may result in unserviceable behaviour of the abutment or bridge deck. A series of geotechnical centrifuge tests and finite element method analyses are reported, examining the effect of clay layer depth and the rate of embankment construction. Agreement of data from the two methods is good, and the results confirm the existence of established lateral soil–pile interaction in the clay layer. However, additional interaction effects associated with the retained embankment material were also identified, causing a significant additional component of lateral loading on the structure. Such interaction increases bending moments in the piles, which are therefore of concern. Many existing empirical methods attempt to estimate ...

Analysis of Blast‐Loaded, Buried RC Arch Response. I: Numerical Approach

Abstract: The physical processes that govern the dynamic interaction between a soil continuum and an abutting or embedded structure are very complex and, often, highly nonlinear, requiring a numerical approach for the solution of such problems. Given the scarcity of experimental studies relative to any particular combination of structure, soil, and loading, the development of efficient analytical/computational tools is important in order to: (1) Understand the complex nonlinear response observed experimentally; (2) perform parametric studies; and (3) develop design guidelines. The approach outlined in this paper represents one attempt at expanding the state‐of‐the‐art in dynamic soil‐structure interaction modeling. In this approach, a hybrid numerical method, which merges the finite difference technique with the finite element method, is combined with a nonlocal continuum damage/plasticity model for concrete, a viscous cap plasticity model for dry sand, and an elastic/strain hardening plasticity model for steel, as...