传统观点认为:形变理论仅适用于“简单加载”或称“比例加载”。尽管在实践上形变理论的应用已大大超出简单加载的范围,但理论上尚未证明这样做的合理性。本文通过对形变理论适用性的分析,提出“法向加载”的概念,并说明在法向加载情况下,形变理论与增量理论的一致性,从而拓展了形变理论的应用范围。 The traditional view is that the theory of deformation applies only to “simple loading” or “proportional loading.” Although the application of deformation theory in practice has greatly exceeded the scope of simple loading, theoretically it has not proved the rationality of doing so. This paper analyzes the applicability of deformation theory, puts forward the concept of “normal loading”, and explains the consistency between deformation theory and incremental theory under normal loading conditions, thus expanding the scope of application of deformation theory.