摘要
通过4种不同塑性细粒土料的室内闭式冻胀模拟试验,阐述了土的含水量、塑性、饱和度和密实度等因素对冻胀性的影响.在分别建立粘性土和粉土的η^(W-Wp)关系的基础上,综合分析并给出了细粒土的η^(W-Wp)关系.提供了典型土料的η^(W-WP)~Kd^Sr关系图,提出了细粒土的η^(W-WP)~Kd/Sr多元线性回归方程式.通过因子贡献率大小分析,指出超塑含水量(W-Wp)大小是影响细粒土冻胀敏感性的主导因素.
Based on the results of laboratory experiments on closed frost heaving for four different plasticity fine-grained soil samples, the influences of water content, plasticity, degree of saturations and degree of compaction on frost heaving susceptibility are discussed. On the foundation of η（W --Wp）curves for clay and silt, the η（W--Wp） relation for fine-grained soil is analyzed synthetitally, and the relation between η- （W-- Wp） and Kd-Sτ for typical soil Samples are obtained. Moreover, multi-unit linearity regression equation between η-（W--Wp） and Kd -Sτ for typical soil is suggested. Analyzing the regression coefficients, it is found that the overplastic limit water content （W--Wp） is the principal factor to the frost heaving susceptibility of fine-grained soil
出处
《冰川冻土》
CSCD
北大核心
2006年第2期211-216,共6页
Journal of Glaciology and Geocryology
关键词
冻胀敏感性
冻胀率
超塑含水量
含水量
压实度
susceptibility of frost heaving
frost heaving ratio
overplastic limit water content
water content
degree of compaction
