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Title: Strength and stress-strain behavior of Atchafalaya levee foundation soils : a report of an investigation
Authors: University of California, Berkeley. College of Engineering. Office of Research Services.
United States. Mississippi River Commission.
Duncan, J. M. (James Michael)
Keywords: Soils
Atchafalaya River
Soils testing
Clay soils
Soil mechanics
Publisher: U.S. Army Engineer Waterways Experiment Station.
Engineer Research and Development Center (U.S.)
Description: Contract Report
Abstract: The objective of this investigation was to relate the properties of the Atchafalaya levee foundation soils measured in triaxial tests to those measured in plane strain and simple shear tests, and to study the effects of anisotropy and load duration on the strength and stress-strain behavior of these soils. The strength and stress-strain characteristics determined in unconsolidated-undrained (Q) triaxial and plane strain tests were found to be essentially identical. The behavior of these soils in unconsolidated-undrained simple shear tests was found to be consistent with the results of triaxial and plane strain tests provided that proper account was taken of the initial stresses within the specimens and the anisotropic strength characteristics of the clay. The undrained strength of the clay was found to vary depending on the orientation of the test specimens. Horizontal specimens were strongest, and those trimmed so that failure occurred on a horizontal plane were weakest. Although no creep strength loss was observed in the creep tests conducted, it was found that test specimens deformed continually under sustained load. The Atchafalaya levees are being designed by the U.S. Army Engineer District, New·Orleans, under the general supervision of the Mississippi River Commission. The investigation described in this report was sponsored by the Mississippi River Commission.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Contract Report

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