粘性土壤剪切强度与容重和含水量之间关系的研究
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*国家教委资助优秀青年教师项目的资助


RESEARCH ON THE RELATION OF SHEAR STRENGTH,DRY DENSITY AND WATER CONTENT FOR CLAYEY SOILS
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    摘要:

    本文在Mitchell等人关于土壤剪切强度唯一性研究的基础上,利用热力学第二定律作指导,由试验和分析建立了剪切强度与热扩散系数之间关系。据此关系,综合De Vries和佐滕用三相比表达热扩散系数的方程式,得到一个四参数剪切强度-干容重-含水量模型。对于一种粘土在各种容重和含水量下进行了三轴剪切试验,本模型拟合实测数据的精度(用相关系数表示)皆在0.9以上。

    Abstract:

    Works by many persons indicated that it was extremely difficult to find the shear strength-dry density-water content relation directly, so a wise approach is to find an equivalent, for shear strength with a prerequisite that it's easier to determine the correlation among this equivalent, dry density and water content. By means of rate process theory, Mitchell etc. found that there is an unique linear relationship between shear strength and number of interparticle bonds, and this relationship doesn't change with soil type, consolidation condition, density and water content. As a result, number of interparticle bonds is an equivalent of shear strength. However, it is a pity that correlation among number of bonds, dry density and water content is still not known, so looking for another equivalent is necessary.

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沈杰,余群.粘性土壤剪切强度与容重和含水量之间关系的研究[J].土壤学报,1991,28(2):132-138. Shen Jie, Yu Qua. RESEARCH ON THE RELATION OF SHEAR STRENGTH, DRY DENSITY AND WATER CONTENT FOR CLAYEY SOILS[J]. Acta Pedologica Sinica,1991,28(2):132-138.

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  • 在线发布日期: 2013-02-25
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