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非饱和粉土吸附强度确定的试验研究
Experimental Study on Suction Strength Determination of Unsaturated Silt Soil
投稿时间: 2017-02-23  最后修改时间: 2017-05-08
DOI:
中文关键词:  非饱和粉土  抗剪强度  吸附强度
英文关键词:unsaturated silt soil  shear strength  suction strength
基金项目:
作者单位E-mail
宋达 河南大学土木建筑学院 974288278@qq.com 
岳建伟 河南大学土木建筑学院 yjwchn@126.com 
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中文摘要:
      非饱和粉土的吸附强度是土力学研究中的难点,针对非饱和粉土吸附强度的影响因素复杂且难以确定等问题,以饱和粉土抗剪强度计算公式为基础,以非饱和粉土抗剪强度作为过渡,研究吸附强度的确定方法。本文通过对不同含水率条件下的非饱和粉土进行固结不排水三轴剪切试验,利用MATLAB对得到的试验结果进行线性回归分析,探究非饱和粉土吸附强度与含水率之间的关系,提出了非饱和粉土吸附强度的计算公式。研究结果表明,非饱和粉土的吸附强度与含水率呈线性递减趋势,所提出的计算公式可为非饱和粉土的理论分析和工程应用提供参考。
英文摘要:
      The suction strength of the unsaturated silt soil is a difficult point in the study of soil mechanics. The change characteristics of the suction strength were studied based on the calculation formula of shear strength of saturated silt through the shear strength of unsaturated silt as the transition. This method can avoid the problems are both the complex influence factors and determine difficulty about the suction strength of unsaturated silt. The linear regression analysis of the experimental results through MATLAB was carried out to investigate the relationship between the adsorption strength of Unsaturated Silt and the moisture content through the consolidated-undrained triaxial shear test by controlling the moisture content of silt soil, and proposed the calculation formula of the unsaturated silt suction strength. The results show that the adsorption strength and moisture content of Unsaturated Silt decrease linearly. The provided formula can be used as a reference for theoretical analysis and engineering application of the unsaturated silt soil.
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