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Ⅰ.引言 在目前计算机程序发展的情况下,不适当的材料模型(特别是对土这种材料来说)常常是限制应力分析能力的主要因索之一。由于土力学中一般采用的三轴应力条件下土的本构关系实际上并不存在,因此这种情况表现得更为明显。然而在近年来,提出了许多描述土的应力-应变和破坏性质的模型。所有这些模型当然都有各自的优缺点,这主要取决于它们的特殊用途。本文试图从一般土工问题和地震引起滑坡的数值分析的角度,来批判地评价土的现有本构关系和破坏准则,并试图确定它们的应用范围,相对的优缺点,以及对这些模型做进一步修正和改进的特殊需要。
I. INTRODUCTION In the current development of computer programs, inappropriate material models (especially for materials such as soil) are often one of the main factors limiting the ability of stress analysis. Since the constitutive relationship of soil under the triaxial stress conditions commonly used in soil mechanics does not actually exist, this situation is more pronounced. However, in recent years, many models have been proposed to describe the stress-strain and damage properties of soils. All of these models, of course, have their own advantages and disadvantages, depending on their particular use. This paper attempts to critically evaluate the existing constitutive relationships and damage criteria of soils from the perspective of general geotechnical issues and the numerical analysis of landslides caused by earthquakes, and attempts to determine their application scope, relative advantages and disadvantages, and to further these models. Special needs for corrections and improvements.