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结构性问题是土力学中的一个难点问题,对于静态的土体结构分析,在一些文献中进行过一些初步讨论,但对于岩土这样由大量颗粒组成的材料,其结构形态的多样性、复杂性是学者们都认识到的。各种不同结构形态的岩土土体的特性,到目前为止,在认识上仍然是处于一种比较模糊的状态。为了进一步了解和掌握岩土的结构形态对其特性的影响,该文通过建立的正交等元胞结构模型,来分析该结构形态下,土体的临界刚度特性,特别是当土体中存在各种不同形态的孔洞时,土体的一些重要性能参数的变化规律。通过正交等元胞模型的分析发现,岩土材料结构性能主要受孔隙率、孔的分布、孔的形态和方向性的影响,主要表现有:孔的面积(体积)越大,对结构的性能影响也越大;孔的分布的影响主要表现,当孔隙率一定时,孔越分散,也就是数量越多,孔表面积越大,对结构性能(刚度)的影响也越大。
Structural problems are a difficult problem in soil mechanics. Some preliminary discussions have been made on the analysis of static soil structure in some documents. However, for the material composed of a large number of particles such as rock and soil, the structural diversity and complexity Sex is what scholars have come to realize. So far, the characteristics of various soil and soil structures with different structural forms are still in a rather vague state of knowledge. In order to further understand and grasp the influence of the structure and shape of rock and soil on its characteristics, this paper analyzes the critical stiffness characteristics of the soil under the structural morphology by establishing the orthogonal cellular structure model, especially when there exists When a variety of different forms of holes, soil some of the important performance parameters of the law. The results of orthogonal cell modeling show that the structural properties of geomaterials are mainly affected by porosity, pore distribution, pore morphology and orientation. The main features are as follows: the larger the pore area (volume) The larger the influence is. The more the pore distribution is, the more pores are dispersed when the porosity is constant, ie, the larger the number is, the larger the pore surface area is and the greater is the influence on the structural performance (stiffness).