干密度值较高时，土样处于密实状态，表现出剪胀特性，有效主应力比-应变曲线近于应变软化型；
When the dry density is relatively high, this dense specimen shows shear dilatation characteristics, and the effective principal stress ratio tends to be strain softening phenomenon.
薄壁板壳结构表面的应力分量、主应力和有效应力。
The stresses component, principal stresses and effective stress on the surfaces of thin plate or shell structures.
弄清受荷单元的主应力主应变关系是认识各向异性变形性状的有效方法，而真三轴试验是必要的手段。
A valid method to make the anisotropic deformation behavior of load bearing unit clear is to research principal stress and principal strain relationship, and true triaxial test is a necessary means.
考虑主应力轴偏转角循环加载的饱和软黏土显式模型可更为有效地预测路基长期沉降。
The explicit model is validated based on undrained cyclic test data. It will be more effective to calculate the long-term settlement of subgrade under traffic loading with the proposed explicit model.
考虑主应力轴偏转角循环加载的饱和软黏土显式模型可更为有效地预测路基长期沉降。
The explicit model is validated based on undrained cyclic test data. It will be more effective to calculate the long-term settlement of subgrade under traffic loading with the proposed explicit model.
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