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In Situ and Laboratory Measured Dynamic Properties of a Marine Clay
Combined resonant-column/torsional-shear tests were performed on four specimens of marine clay collected at varying depths over a range of confining pressures commensurate with the specimen depths. Using the small-strain measurements from these tests, the influences of stress state and void ratio on the small-strain shear stiffness, shear-wave velocity, and material damping ratio were studied. As the confining pressure increases and the specimen consolidates, both the shear stiffness and velocity increase. The rate of this increase follows typical trends of consolidation curves: less sensitive during recompression and unloading, and more sensitive during virgin compression. The laboratory-measured Vs showed good agreement with the field values with little evidence of sample disturbance. The influence of stress on Gmax and Vs was also found to be in good agreement with the laboratory. The relationship between the stress state, void ratio, and material damping is more complicated and does not show as consistent a behavior.
In Situ and Laboratory Measured Dynamic Properties of a Marine Clay
Combined resonant-column/torsional-shear tests were performed on four specimens of marine clay collected at varying depths over a range of confining pressures commensurate with the specimen depths. Using the small-strain measurements from these tests, the influences of stress state and void ratio on the small-strain shear stiffness, shear-wave velocity, and material damping ratio were studied. As the confining pressure increases and the specimen consolidates, both the shear stiffness and velocity increase. The rate of this increase follows typical trends of consolidation curves: less sensitive during recompression and unloading, and more sensitive during virgin compression. The laboratory-measured Vs showed good agreement with the field values with little evidence of sample disturbance. The influence of stress on Gmax and Vs was also found to be in good agreement with the laboratory. The relationship between the stress state, void ratio, and material damping is more complicated and does not show as consistent a behavior.
In Situ and Laboratory Measured Dynamic Properties of a Marine Clay
Kottke, Albert R. (author) / Keene, Andrew (author) / Wang, Yaning (author) / Shin, Boonam (author) / Stokoe, Kenneth H. (author) / Lewis, Michael R. (author)
Geotechnical Frontiers 2017 ; 2017 ; Orlando, Florida
Geotechnical Frontiers 2017 ; 337-346
2017-03-30
Conference paper
Electronic Resource
English
In Situ and Laboratory Measured Dynamic Properties of a Marine Clay
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