STRESS DILATANCY OF SAND AT SMALL STRESS RATIO STATES

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概要

• 論文の詳細を見る

• The validity of the stress dilatancy equation for representing the small stress ratio state response of sand is examined. Test equipment development and procedures that were followed aimed at precise loading control and reliable monitoring of small displacements and volume changes. A variety of load controlled stress paths were applied to conventional triaxial test samples of Ottawa sand. The results obtained show that at small stress ratio states a relationship between stress state and strain increment direction as prescribed by the stress dilatancy equation does not apply. Stress increment directions were found to be related to strain increment directions for low stress ratio states. The relationship has some resemblance to the behavior of a cross anisotropic elastic material with a stiffer vertical to radial response. The range of low stress ratio states over which a stress dilatancy relationship does not apply tends to increase with density. In stress ratio regions where the stress dilatancy equation began to apply, the relationship between R and D tends toward K_<CV> with increasing confining stress for conventional triaxial but not for constant mean normal stress paths.

• 社団法人地盤工学会の論文
• 1990-03-15

著者

• Vaid Y.p.

  Department Of Civil Engineering University Of Britich Columbia

• Negussey Dawit

  Department Of Civil Engineering University Of British Columbia

関連論文

• EFFECT OF STATIC SHEAR ON RESISTANCE TO LIQUEFACTION
• RELATIVE DENSITY OF PLUVIATED SAND SAMPLES
• SAND SAMPLE PREPARATION-THE SLURRY DEPOSITION METHOD
• STRESS DILATANCY OF SAND AT SMALL STRESS RATIO STATES

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