长江科学院院报2024，Vol.41Issue(12)：101-108,8.DOI:10.11988/ckyyb.20230775
膨胀土物理力学指标分布规律统计分析
Probability Distribution Law of Physical and Mechanical Property Indexes of Expansive Soil:A Case Study from Ankang Area
摘要
Abstract
In this study,we analyzed the distribution patterns and ranges of expansive soil indices through an engi-neering case study in Ankang,Shaanxi Province.By utilizing mathematical statistical models,specifically the Nor-mal,Gamma,Weibull,and Lognormal distributions,we aimed to gain a deeper understanding of these indices.To validate our findings,we conducted the Kolmogorov-Smirnov(K-S)test,which allowed us to confirm the distribu-tion of the indices and further elucidate the physical and mechanical properties of expansive soil.Our results re-vealed notable trends:the dry density index exhibited minimal deviation with a right skew,closely aligning with the Normal distribution.Conversely,the expansion rate demonstrated the greatest deviation and a left skew,indicating its heightened sensitivity to other indices.We also observed that the Lognormal distribution adeptly captured the pat-terns of water content and void ratio,while the Normal distribution provided an accurate representation of dry densi-ty.The Weibull distribution,on the other hand,excelled in describing the distributions of liquid limit,plastic lim-it,plasticity index,expansion rate,and expansion force in expansive soil.When compared to the traditional aver-age method,our approach by utilizing the peak parameter values from the optimal distribution functions of various indices offers a more precise evaluation of the physical and mechanical properties of expansive soil.The findings serve as valuable guidance for comprehending regional expansion deformation and enhancing engineering design and construction practices.关键词
膨胀土/物理力学指标/分布规律/数理统计/柯尔莫哥洛夫-斯米洛夫(K-S)检验法Key words
expansive soil/physical-mechanical indexes/distribution law/mathematic statistics/Kolmogorov-Smilov test分类
天文与地球科学引用本文复制引用
郭瑞,张建华,李俊祥,冯旭明,李文强..膨胀土物理力学指标分布规律统计分析[J].长江科学院院报,2024,41(12):101-108,8.基金项目
陕西省自然科学基础研究计划一般项目(面上)(2023-JC-YB-307) （面上）
陕西省教育厅一般专项项目(23JK0370) （23JK0370）
