东南大学学报（英文版）2020，Vol.36Issue(3)：328-333,6.DOI:10.3969/j.issn.1003-7985.2020.03.011
可变形土中孔径分布函数的模拟
Simulation of the pore size distribution function for a deformable soil
周林 1翟钱2
作者信息
- 1. 东南大学混凝土及预应力混凝土结构教育部重点实验室,南京210096
- 2. 东南大学基本建设处,南京210096
- 折叠
摘要
Abstract
In order to obtain an indirect estimation method of the pore size distribution function (PSDF) for a deformable soil,both the soil-water characteristic curve in the form of gravimetric water content (w-SWCC) and the shrinkage curve (SC) are used as the input parameters.The w-SWCC defines the relationship between the gravimetric water content and soil suction.The SC illustrates the variation of the void ratio with respect to different water contents.10 points in the w-SWCC were selected as initial conditions.By adopting different void ratios,a group of soil-water characteristic curve in the form of the degree of saturation (S-SWCC) can be obtained.Based on Kelvin's capillary law,the S-SWCCs can be converted into a group of PSDFs.In the group of PSDFs,each PSDF represents the geometric pore space in soil corresponding to a given void ratio.From the proposed methodology,it is observed that a bimodal PSDF can be gradually changed into a nnimodal PSDF when the soil is compressed.The Chataignier clay is selected as the verification and it shows that the simulation results agree well with the measured results from the mercury intrusion porosimetry (MIP) test.In addition,the discrepancies between both direct measurement data using the MIP test and the indirect estimated results from the proposed method are also discussed.关键词
孔径分布函数/模拟/单峰/双峰Key words
pore size distribution function/simulation/unimodal/bimodal分类
建筑与水利引用本文复制引用
周林,翟钱..可变形土中孔径分布函数的模拟[J].东南大学学报（英文版）,2020,36(3):328-333,6.
