目前在岩土介质和混凝土的弹塑性理论中广泛地使用了奇异屈服面,然而在屈服面的奇异点上本构方程的正确表述却没有受到足够的重视。本文概述了如何利用应变空间表述的伊留辛公设在理论上导出奇异点上的完整的本构关系,并且还给出应用于岩石帽盖模型的一个例子。 At present, the singular yield surface is widely used in the elasto-plastic theory of geotechnical media and concrete. However, the correct representation of the constitutive equation at the singularity of the yield surface has not received enough attention. This article outlines how to use the Iursin formulae formulated by the strain space to theoretically derive the complete constitutive relations at singular points, and also gives an example of a rock cap model.