(Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources，Yangtze River Scientific Research Institute，Wuhan，Hubei 430010，China)
Abstract：The saturated fine sand with alluvial origin in Jingjiang levees was collected，and specimens were reshaped refer to the in-situ tests results. Combining with the actual consolidation ratio Kc(Kc≈1.6)，the dynamic triaxial tests were conducted to research the characteristics of dynamic shear modulus，and then a suitable empirical formula was explored to estimate the maximum shear modulus. Results show that：Under the condition of same relative density(Dr)，the release velocity of dynamic shear modulus will slow down with the increasing of confining pressure；However，when Dr changes from 0.5 to 0.6，the decay curves of dynamic shear modulus can match well with the same confining pressure；Based on the empirical estimate formula，relative density and standard penetration test blow count are taken into account respectively to estimate the maximum shear modulus of saturated fine sand. Compared with the testing results，it is verified that the formula can estimate the maximum shear modulus of this kind of saturated fine sand well.
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2014, Vol. 33 
