scholarly journals Deformation and cyclic resistance of sand in large-strain undrained torsional shear tests with initial static shear stress

2021 ◽  
Author(s):  
Muhammad Umar ◽  
Gabriele Chiaro ◽  
Takashi Kiyota ◽  
Nazish Ullah
Keyword(s):  
Shear Stress ◽  
Large Strain ◽  
Shear Tests ◽  
Cyclic Resistance ◽  
Torsional Shear ◽  
Static Shear

Effect of Static Shear Stress on Cyclic Resistance of a Uniform Gravel

2020 ◽  
Author(s):  
Michelle R. Basham ◽  
Adda Athanasopoulos-Zekkos
Keyword(s):  
Shear Stress ◽  
Cyclic Resistance ◽  
Static Shear

scholarly journals Behavior of Liquefied Sands Under Extremely Large Strain Levels in Cyclic Torsional Shear Tests

2008 ◽  
Vol 48 (5) ◽  
pp. 727-739 ◽  
Author(s):  
Takashi Kiyota ◽  
Takeshi Sato ◽  
Junichi Koseki ◽  
Mohammad Abadimarand
Keyword(s):  
Large Strain ◽  
Shear Tests ◽  
Torsional Shear

scholarly journals Undrained Cyclic Response and Resistance of Saturated Calcareous Sand considering Initial Static Shear Effect

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Baojian Li ◽  
Panpan Guo ◽  
Gaoyun Zhou ◽  
Zhe Wang ◽  
Gang Lei ◽  
...  
Keyword(s):  
Shear Stress ◽  
Relative Density ◽  
Shear Stresses ◽  
Loose Sand ◽  
Calcareous Sand ◽  
Cyclic Shear ◽  
Cyclic Response ◽  
Dense Sand ◽  
Cyclic Resistance ◽  
Static Shear

Sand elements in the natural or manmade field have often undergone initial static shear stresses before suffering cyclic loading. To explore the effect of static shear stress, a series of undrained cyclic triaxial tests were performed on dense and loose calcareous sand under different initial and cyclic shear stresses. The triaxial test results are used to describe the effect of static shear stress on the cyclic response of the calcareous sand with different relative density. Cyclic mobility, flow deformation, and residual deformation accumulation are the three main failure modes under varying static and cyclic shear stress levels. The cyclic resistance of dense sand is greater than that of loose sand, but the initial static stress has different effects on the cyclic resistance of the two kinds of sand. The dense sand owns a higher cyclic resistance with SSR increasing, while for the loose sand, 0.12 is the critical SSR corresponding to the lowest value of the cyclic resistance. The dense sand has more fast accumulation of dissipated energy, compared with loose sand. Additionally, an exponential relationship is established between static shear stress, relative density, and normalized energy density.

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