本文介绍用人工制备的正常固结粘性土试样进行两种应力路径伸长试验的成果。试验表明,正常固结粘土伸长条件下的变形特性与压缩时的变形特性相似,在不同应力路径时伸长条件下土的弹性参数也是一个常量。塑性应变增量方向与应力路径没有很大关系,以等塑性体应变为硬化参数的屈服面形状也是椭园。 This article describes the results of two stress path elongation tests performed on artificially consolidated, normally consolidated clay samples. Tests have shown that the deformation behavior of normally consolidated clays under elongation conditions is similar to that under compression, and the elastic parameters of the soil under constant stress conditions are also constant. There is not much relationship between the direction of the plastic strain increase and the stress path. The shape of the yield surface with isoplastic strain as the hardening parameter is also an ellipse.