Some Factors Affecting Cyclic Undrained Triaxial Strength of Sand

Tatsuoka, Fumio; Toki, Shosuke; Miura, Seiichi; Kato, Hiroyuki; Okamoto, Masahiro; Yamada, Shinichi; Yasuda, Susumu; Tanizawa, Fusao

doi:10.3208/sandf1972.26.3_99

Cited by 92 publications

(24 citation statements)

References 14 publications

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“…The frequency of the input axial strain was much slower than that of an earthquake. The eŠect of the strain rate on the cyclic shear strength of the saturated sand was very small (Yoshimi and Oh-oka, 1975;Tatsuoka et al, 1986). A recent study (Santucci et al, 1999) on saturated sand showed that the eŠect of large changes in the strain rate on the stressstrain relation cannot be disregarded even though the eŠect of the strain rate on the soil skeleton curve is small.…”

Section: Materials Parametersmentioning

confidence: 96%

Numerical Prediction of Seepage and Seismic Behavior of Unsaturated Fill Slope

Mori

Uzuoka

Chiba

et al. 2011

Soils and Foundations

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Section: Materials Parametersmentioning

confidence: 96%

Numerical Prediction of Seepage and Seismic Behavior of Unsaturated Fill Slope

Mori

Uzuoka

Chiba

et al. 2011

Soils and Foundations

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“…In undrained cyclic triaxial loading, specimens prepared by the water-pluviation method are generally weaker than those prepared by the airpluviation method; similarly, specimens prepared by air pluviation are generally weaker than specimens prepared by the moist-tamping method (Silver et al 1980;Miura and Toki 1982;Tatsuoka et al 1986). …”

Section: Fig 2 Schematic Illustration Of Cyclic Liquefaction (Aftermentioning

confidence: 99%

“…Tatsuoka et al (1986) summarized the results of a cooperative test program on the cyclic strength of Toyoura sand and found that the effect of loading frequency, between 0.05 and 1.0 Hz, on the cyclic strength was minimal. The effects of loading intensity and duration are represented by the cyclic resistance ratio and number of cycles to failure, respectively.…”

Section: Fig 2 Schematic Illustration Of Cyclic Liquefaction (Aftermentioning

confidence: 99%

Cyclic liquefaction of loose gassy sand

Grozic¹,

Robertson²,

Morgenstern³

2000

Can. Geotech. J.

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Gas can be found in many soils, but none more common than in seabed soils. Gas-charged sediments are known to be widely distributed throughout the world's oceans. Numerous research programs have studied saturated soil response to cyclic loading; however, little is known about the behavior of gassy soils subjected to cyclic loading. The response of loose gassy specimens subjected to cyclic loading was studied in a laboratory program. Triaxial tests were performed on specimens of reconstituted Ottawa sand prepared to various gas contents and densities. The specimens were consolidated and then sheared under undrained cyclic loading. Gas content was measured at the beginning and end of each test using time domain reflectometry. The response of the gassy specimens has been shown to be influenced by the soil state and grain characteristics and the intensity, duration, and frequency of the cyclic loading. The propensity of a soil to liquefy is represented by a cyclic resistance ratio, defined as the cyclic stress ratio to cause liquefaction, or to cause a specified amount of strain. The results of this laboratory program show that the cyclic resistance ratio increases as gas content and density increase. The laboratory study demonstrates that the cyclic liquefaction potential of a soil is reduced by the addition of gas; however, soils containing some gas may still experience cyclic liquefaction provided they are sufficiently loose.Résumé : L'on peut trouver du gaz dans plusieurs sols, mais jamais aussi communément que dans les sols des lits de mer. Les sédiments chargés de gaz sont reconnus pour être largement répartis à travers les océans du monde. De nombreux programmes de recherche ont étudié la réponse du sol saturé à des chargements cycliques; cependant, l'on connaît très peu le comportement des sols gazeux soumis à un chargement cyclique. La réponse de spécimens gazeux lâches soumis à un chargement cyclique a été étudiée dans un programme de laboratoire. Des essais triaxiaux ont été réalisés sur des spécimens reconstituées de sable d'Ottawa préparés à différentes teneurs en gaz et densités. Les spécimens ont été consolidés et ensuite cisaillés non drainés sous des charges cycliques. La teneur en gaz a été mesurée au commencement et à la fin de chaque essai au moyen de la sonde d'humidité TDR. Il a été démontré que les spécimens gazeux sont influencés par l'état du sol et les caractéristiques des grains, et par l'intensité, la durée, et la fréquence des cycles de chargement. La propension d'un sol à se liquéfier est représentée par un rapport de résistance cyclique, défini comme le rapport de contraintes cycliques causant la liquéfaction, ou causant une quantité donnée de déformation. Les résultats de ce programme de laboratoire montrent que le rapport de résistance cyclique augmente lorsque la teneur en gaz et la densité augmentent. L'étude en laboratoire démontre que le potentiel de liquéfaction cyclique d'un sol est réduit par l'addition de gaz; cependant, les sols contenant du gaz peuvent encore atteindre la li...

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“…Par ailleurs, le réglage de la densité, obtenu à la fois par la hauteur de chute et par le débit, a permis d'éli miner les séries de tamis ou diffuseurs retenus par dif férents auteurs [5,6,7,8].…”

Section: J Garnierunclassified

Reconstitution d'éprouvettes de sable

1994

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Among the available procedures for obtaining reconstituted laboratory sand samples, the raining method appears to best simulate the natural processes of sand deposits. Effects of some components of the sample preparation equipment on the relative density of the sample have been studied. They leaded to provide a guid-line for design different pluviated sand apparatus. The paper concerns the results of an investigation on these effects and on the design of a suitable laboratory sand rainer. REVUE FRANÇAISE DE GEOTECHNIQUEN° 68 3e trimestsre 1994

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Some Factors Affecting Cyclic Undrained Triaxial Strength of Sand

Cited by 92 publications

References 14 publications

Numerical Prediction of Seepage and Seismic Behavior of Unsaturated Fill Slope

Numerical Prediction of Seepage and Seismic Behavior of Unsaturated Fill Slope

Cyclic liquefaction of loose gassy sand

Reconstitution d'éprouvettes de sable

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