Influence of relative density on initial tangential modulus of gravelly sand
CHEN Chen
Abstract：In order to solve the problem that the structural change of surrounding soil due to the disturbance appears during the construction process of foundation pit and then the change of the strength-deformation characteristics of soil is induced,the typical gravelly sand was selected for the triaxial consolidation drained shear tests under different confining pressures.The related parameters for the Duncan-Chang model for the gravelly sand were obtained.The influence rule of initial tangential modulus Ei on the relative density Dr for the gravelly sand was investigated.In addition,the relationship between Dr and dimensionless parameter K which were related to Ei was fitted.The results show that the relative density Dr has important influence on the strength-deformation characteristics of gravelly sand,and the relationship between ln K and Dr can be describled by the quadratic function.
Keywords：gravelly sandtriaxial testrelative densityDuncan-Chang modeldisturbed stateinitial tangential modulusstrength-deformation characteristiclogarithmic fitting
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 579-583 )