土的本构模型研究现状及发展趋势

从两方面总结了前人关于土体本构关系的成果以及目前的发展状况：一方面，从宏观现象学角度介绍了剑桥模型、弹性－硬化塑性模型以及为描述循环荷载条件下土的本构特性所建立的多重屈服面模型和边界模型；另一方面，阐述了土的微观结构和土微结构力学模型的研究状况。认为今后的土本械模型研究趋势必将与土的结构性研究紧密相联，成为２１世纪土力学的核心。

Current Situation and Tendency of Soil Constitutive Model

The research on soil constitutive model is now in the ascendant because of the complexion and variation of soil material. In this paper, experience summed up by predecessors and development with regard to the soil constitutive model is concluded in two sides. On the one hand, cambridge model, the elasticity-harden plasticity model and the multi-yield surface and boundary surface model to describe soil properties under circulation load are introduced. On the other hand, the research condition about soil microstructure and microstructure mechanics model are discussed. On the basis of the above discussion, the tendency of model research is bound to join with the research on soil structure, and becomes the core of soil mechanics during 21century.