Cyclic Behavior of Natural Overconsolidated Clay in Two Loading Modesby M. W. O'Neill, Univ of Houston, United States,
T. W. Dunnavant, Univ of Houston, United States,
C. J. Belleman, Univ of Houston, United States,
Abstract: One-way, stress-controlled, cyclic triaxial compression tests were conducted on a heavily overconsolidated (Ko > 1), slickensided, natural clay with a view to modeling its cyclic behavior for purposes of analyzing horizontally loaded foundations. An objective of the study was to demonstrate, using simple laboratory tests available to foundation engineering practitioners, how the testing method affected the indicated behavior of a particular, complex, natural anisotropically consolidated soil. It was found that the soil that was studied degraded primarily by accumulation of plastic strain and that the best means of expressing the plastic strain after N cycles of loading was through correlation with the axial strain that occurred on the first cycle.
Subject Headings: Soil tests | Load tests | Soil properties | Cyclic loads | Axial forces | Triaxial loads | Clays | Cyclic strength
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