Lateral Pile Response During Earthquakes

by Takaaki Kagawa, (M.ASCE), Engrg. Consultant; McClelland Engrs., Inc., Houston, Tex.,
Leland M. Kraft, Jr., (M.ASCE), Manager; Special Projects Group McClelland Engrs., Inc., Houston, Tex.,

Serial Information: Journal of the Geotechnical Engineering Division, 1981, Vol. 107, Issue 12, Pg. 1713-1731

Document Type: Journal Paper


A nonlinear method for seismic soil-pile-structure interaction is presented. Primary features of the proposed method include a consistent approach to determine seismic p-y relationships and a liquefaction model that is suited to pore pressure evaluation for earthquake-type irregular loadings. The seismic- p-y relationships are determined from nonlinear stress-strain relations of soils, and include soil nonlinearity as well as pore pressure buildup effects around a pile. The performance and validity of the method were evaluated through an analysis of shaking table test on model soil-pile-structure systems. Using the proposed method, seismic response characteristics of an idealized offshore pile-supported structure at a sand site were analyzed. Results indicated that liquefaction as well as pore pressure bulidup around a pile can have a large impact on the response of pile-supported structures.

Subject Headings: Seismic tests | Piles | Seismic effects | Soil-pile interaction | Pore pressure | Soil pressure | Earthquakes | Seismic loads

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