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土的结构性是岩土材料的基本特性,基于综合结构势理论建立的结构性参数,以表述土的结构性,但已有的表述存在缺陷,为此针对应变和应力结构性参数的缺点提出了一个可同时考虑球应力和剪应力作用的结构性参数——应力比结构性参数。通过理论分析和三轴试验研究发现,应力比结构性参数与应力或应变结构性参数相比,可同时考虑剪应力和球应力对土结构性的影响,并且剪切过程中结构性参数不再出现峰值,更符合人们以往对结构性的认识。该参数从定量上更加准确地反映了土的结构性。
The structural property of soil is the basic characteristic of geomaterials. Based on the structural parameters established by the synthetic structure potential theory to describe the structural property of soil, the existing expressions have defects. Therefore, the shortcoming of structural parameters of strain and stress is proposed A structural parameter that can simultaneously account for the effects of ball and shear stress on structural parameters of stress ratio. Through theoretical analysis and triaxial test, it is found that compared with the structural parameters of stress and the structural parameters of stress or strain, the influence of shear stress and ball stress on the soil structure can be considered simultaneously. And the structural parameters in shear process are no longer Peak, more in line with people’s previous understanding of the structure. This parameter reflects quantitatively the soil structure more accurately.