STRAIN RATE DEPENDENT BEHAVIOUR OF A NATURAL STIFF CLAY

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概要

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• The experimental results reported in this paper were obtained performing monotonic, cyclic and dynamic torsional shear tests on a stiff Italian clay in the pre-failure stress-strain range. The experimental clearly demonstrate that the small strain values of shear stiffness and damping ratio are significantly affected by strain rate : while the initial shear modulus G_0 continuously increases with strain rate, the equivalent viscous damping ratio D_0 initially decreases with strain rate, then it reaches a minimum constant value and thereafter it increases significantly. The experimental data also demonstrate that, if the strain rate is properly accounted for, a linear behaviour for the soil is no longer distinguishable, even at strain levels as low as 10^<-4>%. As a whole, these effects could have meaningful practical implications, thus requiring to be accounted for in modelling soil behaviour in those problems where the rate of loading varies significantly.

• 社団法人地盤工学会の論文
• 1999-04-15

著者

• Silvestri Francesco

  Assistant Professor Ditto.

• dONOFRIO ANNA

  Research Assistant, Department of Geotechnical Engineering, University of Napoli"Federico II", via C

• VINALE FILIPPO

  Professor, ditto. Manuscript was received for review on December 22, 1997. Written discussions on th

• Donofrio Anna

  Research Assistant Department Of Geotechnical Engineering University Of Napoli"federico Ii"

• Vinale Filippo

  Professor Ditto. Manuscript Was Received For Review On December 22 1997. Written Discussions On This

• Onofrio Anna

  Research Assistant, Department of Geotechnical Engineering, University of Napoli"Federico II", via Claudio 21, 80125 Napoli, Italy.

関連論文

• STRAIN RATE DEPENDENT BEHAVIOUR OF A NATURAL STIFF CLAY

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