Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cyclic Behavior of Nonplastic Silty Sand under Direct Simple Shear Loading
Abstract The cyclic behavior of clean sands pertaining to earthquake loading have been studied extensively. However, natural sands may contain significant amounts of silt or clay, which have long been thought to affect the cyclic resistance of such soils. In fact, the literature contains what appears to be conflicting results. There was a need to clarify the effect of fines content on the cyclic resistance of sand which was addressed in this paper. A series of constant volume stress-controlled cyclic tests using the DSS apparatus was performed on reconstituted specimens of sand with fines content of 0%, 20%, and 40%. The samples were prepared at relative densities of 40% and 80%; consolidated at vertical stresses of 50, 100, 200, and 400kPa; and sheared at cyclic stress ratios of 0.05, 0.10, and 0.15. Test results indicate that failure criterion should be identified based on whether the sand behavior is contractive or dilative. The cyclic resistance is found to be controlled by the relative density of the soil.
Cyclic Behavior of Nonplastic Silty Sand under Direct Simple Shear Loading
Abstract The cyclic behavior of clean sands pertaining to earthquake loading have been studied extensively. However, natural sands may contain significant amounts of silt or clay, which have long been thought to affect the cyclic resistance of such soils. In fact, the literature contains what appears to be conflicting results. There was a need to clarify the effect of fines content on the cyclic resistance of sand which was addressed in this paper. A series of constant volume stress-controlled cyclic tests using the DSS apparatus was performed on reconstituted specimens of sand with fines content of 0%, 20%, and 40%. The samples were prepared at relative densities of 40% and 80%; consolidated at vertical stresses of 50, 100, 200, and 400kPa; and sheared at cyclic stress ratios of 0.05, 0.10, and 0.15. Test results indicate that failure criterion should be identified based on whether the sand behavior is contractive or dilative. The cyclic resistance is found to be controlled by the relative density of the soil.
Cyclic Behavior of Nonplastic Silty Sand under Direct Simple Shear Loading
Prof. El-Mamlouk, H. H. (Autor:in) / Assoc. Prof. Hussein, A. K. (Autor:in) / Hassan, A. M. (Autor:in)
01.01.2007
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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