Shear Modulus and Damping Ratio of Dry Koka Sand Using Cyclic Simple Shear Test
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Date
2010-06
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Addis Ababa University
Abstract
The nature and distribution of earthquake damage is strongly
influenced by the response of soils to cyclic loading, and the behavior
of soils subjected to dynamic loading is influenced by dynamic soil
properties. The determination of these dynamic soil properties is
invaluable in the response analysis of soils to cyclic loading. Of these
dynamic soil properties, shear modulus and damping ratio are the
most important; and this paper is concerned with the determination of
the shear modulus and damping ratio of sand.
In this research the shear modulus and damping ratio of Koka sand is
determined using the cyclic simple shear test. The results have shown
that the obtained normalized shear modulus values are located lower
than those suggested in literature, especially at lower strains. For
higher strains the obtained normalized shear modulus values agree
with those suggested in literature. The obtained damping values are
almost within the range suggested in literature.
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Keywords
Damping Ratio, Shear Test, Shear Modulus