Seismic Design of Soil-Structure Interaction Systems

by Richard A. Parmelee, (M.ASCE), Assoc. Prof. of Civ. Engrg.; Northwestern Univ., Evanston, IL,
John H. Wronkiewicz, Res. Asst.; Dept. of Civ. Engrg., Northwestern Univ., Evanston, IL,

Serial Information: Journal of the Structural Division, 1971, Vol. 97, Issue 10, Pg. 2503-2517

Document Type: Journal Paper


A method to evaluate the maximum flexural response of a soil-structure system when subjected to seismic excitation is presented. The flexible foundation medium is assumed to be represented by a homogeneous, isotropic, elastic half space whose dynamic properties can be characterized by stiffness and associated damping constants. The structure is an elastic single-story building situated on the surface of the foundation medium. Investigation into the response of numerous soil-structure systems leads to a set of design curves. When used in conjunction with the appropriate seismic response spectra these curves permit the maximum flexural response of the soil-structure system to be determined with relative ease. The maximum flexural response may be increased or decreased when compared to the response of the same structure on a rigid foundation.

Subject Headings: Seismic design | Flexural strength | Seismic tests | Soil structures | Soil-structure interaction | Seismic effects | Elastic foundations | Elastic analysis

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