广义塑性力学的加卸载准则与土的本构模型──广义塑性力学讲座(3)

Loading-unloading criterions and constitutive models in generalized plastic mechanics

首先介绍了广义塑性力学的加卸载准则，该准则能准确判断各应变分量的加卸载状态，可以方便地应用于数值分析。然后提出了基于广义塑性力学的土本构模型。通过试验，给出了硬化压缩土和硬化剪胀土的屈服条件与计算参数，并由算例说明了其合理性。

The loading-unloading criteria in the generalized plastic mechanics are discussed firstly, which can be easily used to estimate loading-unloading stale of component stain in numerical analysis. The constitutive models of soils based on generalized plastic mechanics are put forward. The yield conditions and calculation parameters of compressive strain hardening soils, and of dilative strain hardening soils are obtained through tests whose rationality is approved by the computed examples.