动荷载作用下强度发挥面和空间强度发挥面上砂土的应力 …

以饱和福建标准砂在不同条件下固结不排水振动三轴试验为基础,详细研究了强度发挥面和空间强度发挥面（ＳＭＰ面）上的剪正应力比与正剪应变比关系。结果表明,在动荷载作用下只有应力比与应变增量比间在强度发挥面和ＳＭＰ面上均存在线性关系,且密度、周围压力、固结应力比、动应力幅值和振次发生变化时此关系均不受影响,在应力比与应变全量比间无简单的线性关系。

RELATIONSHIP BETWEEN DYNAMIC STRESS AND STRAIN IN "MOBILIZED PLANE" AND "SPATIAL MOBILIZED PLANE

Based on the result of consolidated undrained dynamic triaxial test of saturated sand,the relationship between ratio of shear/normal stress and ratio of normal/shear strain on two planes ("Mobilized Plane" and "Spatial Mobilized Plane") is studied respectively. The study result indicates that this relationship is linear and independent of density, confining pressure, ratio of consolidation stress, amplitude and number of cyclic loading both on "Mobilized Plane" and "Spatial Mobilized Plane" under dynamic stress applied, only when the strain is expressed in terms of its incremental type.