Soil-Structure Interaction on Structural Dynamics

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by Bulent A. Ovunc, Univ of Southwestern Louisiana, Lafayette, LA, USA,

Document Type: Proceeding Paper

Part of: Dynamic Response of Structures

Abstract: The dynamic analysis of structures under the effect of soil-structure interaction and the effect of member axial force is based on the continuous mass matrix method, in which the equations of motion are satisfied at any arbitrary point of the structure not only at nodal points. The member stiffness matrices are developed by considering the actual mass distribution and the effect of member axial force. For the members embedded in the soil, the soil reactions and the skin frictions are also considered as continuously varying over the members. The functions describing the variation of the soil characteristics with the depth are introduced in the analysis in order to take properly into account the properties of granular and cohesive soils. The dynamic member stiffness matrix thus developed is introduced in the general purpose computer program STDYNL for the practical applications.

Subject Headings: Soil analysis | Dynamic structural analysis | Soil structures | Soil-structure interaction | Matrix (mathematics) | Structural dynamics |

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