不同应力路径加荷时粉土的应力应变关系

The Stress-Strain Relation of Silt with Loading in Different Stress Paths

对粉土在常规三轴仪上用改进的加荷方法进行了多种应力路径的试验,揭示了应力路径对粉土应力应变特性的影响;探讨了粉土的剪胀性以及用常规三轴试验得出的参数能否反映不同加荷路径等问题;推荐了几个合适的本构模型并给出了模型参数.

A variety of stress path experiments are made on silt on con-ventional triaxial apparatus using a modified loading pattern.It reveals theeffects of the stress paths on the stress-strain properties of silt.It also probesnto such problems as silt dilatancy and the reliabilities of using the para-meters obtained from the conventional triaxial experiments for reflecting di-fferent loading paths.And,it recommends several constitutive models suitablefor such silt and gives model parameters.