Study on liquefaction characteristics and anisotropy of small strain shear moduli of Toyoura sand

Abstract

This study investigates the effects of drained and undrained cyclic loading history on anisotropy of small strain shear moduli and liquefaction resistance of Toyoura sand. The test results show that the anisotropy of the specimen increase with increase in the number of drained cyclic loading history, and there is a good correlation between the small strain shear moduli and liquefaction resistance. In addition, the anisotropy of soil structure was lowered due to the undrained cyclic loading history, and re-liquefaction strength tends to decrease significantly. On the other hand, we discussed the development of strain and excess pore pressure of specimens with different relative density.