土体微观结构研究与土力学的发展方向——若干进展与思考  

RESEARCH INTO SOIL MASS MICROSTRUCTURE AND SOME PROGRESSES ON SOIL MECHANICS

作　　者：周萃英[1] 

机构地区：[1]中山大学地球科学系,广州510275

出　　处：《地球科学（中国地质大学学报）》2000年第2期215-220,共6页Earth Science-Journal of China University of Geosciences

基　　金：国家自然科学基金项目!(No .5 980 90 0 8);广东省自然科学基金项目!(No .980 2 74)

摘　　要：土体的结构性研究是土力学研究中的前沿课题之一 .工程土体在宏观上所表现出来的非连续、不均匀、各向异性和非确定性等复杂性特征 ,从根本上取决于土体微观结构的非连续性和非确定性 .可以说土体的复杂性是其介质结构与组分非线性的直接体现 .因而 ,对土体结构及其模型的研究 ,成为土力学的核心问题之一 .科学建立土体演化的结构控制模型 ,进而建立基于土体微观结构演化机制的土力学模型和本构关系是土力学理论发展的新方向 .从土体微观结构研究的进展出发 ,探讨了土体结构演化机制和结构模型的特点 ,进而指出土力学理论建模的新思路 .The research into soil microstructure is one of the frontal topics in the soil mass research. Such complex features as discontinuity, heterogeneity, anisotropy and uncertainty characteristics of the engineering soil mass on a macroscopic scale depend greatly on the discontinuity and uncertainty of the soil mass microstructure. In another word, the soil mass complexity is the direct actualization of the non_linearity of the soil mass microstructure and components. Therefore, the research into the soil mass microstructure and model has turned into one of the key issues. In this sense, the scientific establishment of the structural control model of the soil mass evolution, that of the soil_mass microstructural evolutionary mechanism_based soil mechanic model and the constitutive relationship are new trends of the soil mechanic theoretical development. In this paper, the progresses in the soil microstructure are first presented. The characteristics are then discussed of the soil mass microstructural evolutionary mechanism and microstructural model. Finally, a new approach is proposed to the soil mechanic theoretical modeling.

关 键 词：土体 结构控制模型 土力学 微观结构 发展方向 

分 类 号：TU43[建筑科学—岩土工程] P642.113[建筑科学—土工工程]