摘要
目前,大多土水特征曲线的数字模型都只能预测一组试验数据,且没有考虑试样体积变化对土水特征曲线的影响。本文基于土体孔隙毛细管原理,假定孔隙的最大和最小孔径分布呈正态分布,提出一个考虑土体体积变化的土水特征曲线模型,并将模型预测结果与室内试验结果进行对比,验证了模型的准确性;最后,对模型参数敏感性进行分析。
Until now most of SWCC prediction models which don＇t take the volume deformation into account can only predict one SWCC.Supposing the pore capillary principle of soil and the normal distribution of the maximum and minimum apertures,a new SWCC prediction model is put forward which takes the volume deformation into account.The comparison between the predicted results and measured results indicates that the new model presented for predicting the SWCC is correct and reasonable.At last,the sensitivity of the parameter of the new model is analyzed.
出处
《建筑科学》
北大核心
2012年第11期29-33,共5页
Building Science
基金
上海市科委资助课题(09dz1207706)
关键词
土水特征曲线
预测模型
体变
非饱和土
soil-water characteristic curve
prediction model
volume deformation
unsaturated soil
