昆明泥炭土压缩指标与基本物理指标相关性研究
Correlation study between compression indicator and basic physical index of Kunming peat soil
欧明喜 1高贵芬 1杨伟锟 1郑文炜2
作者信息
- 1. 昆明理工大学建筑工程学院,云南 昆明 650500
- 2. 建研地基基础工程有限责任公司,北京 100013
- 折叠
摘要
泥炭土作为一种对建筑物沉降有着重要影响的特殊土,其压缩指标是影响工程安全的关键指标.对昆明地区勘察数据中的压缩系数和压缩指数进行了回归分析,并建立了回归模型,开展了昆明地区 4 个不同场地泥炭土一维固结试验,基于试验结果和国内外类似经验公式验证了回归模型的适用性.结果表明:压缩系数α1-2、压缩指数Cc与天然含水率ω0、初始孔隙比e0 具有高度相关线性关系,其中压缩指数与初始孔隙比的关系为Cc=0.15e0-0.17;回归模型与试验结果及国内外类似经验公式有较好的一致性.
Abstract
Peat soil is a kind of special soil which has an important effect on the settlement of buildings,and its compression indicator is an important index affecting the engineering safety.Regression analysis was carried out on the coefficient of compressibility and compression index of the survey data in Kunming area.The regression model was established.One-dimensional consolidation tests were carried out for peat soil in four different sites in Kunming area,and the applicability of the regression model was verified based on the test results and similar empirical formulas at home and abroad.The results show that the coefficient of compressibility α1-2 and compression index Cc have a highly correlated linear relationship with the natural water content ω0 and the initial pore ratio e0.The relationship between compression index and initial pore ratio is expressed as Cc=0.15e0-0.17.The regression model is in good agreement with the experimental results and similar empirical formulas at home and abroad.
关键词
泥炭土/压缩指数/线性关系/物理指标Key words
peat soil/compression index/linear relationship/physical index引用本文复制引用
出版年
2024
NETL
NSTL
万方数据