华北水利水电大学学报（自然科学版）2017，Vol.38Issue(2)：43-48,6.DOI:10.3969/j.issn.1002-5634.2017.02.009
非饱和滑带土非线性Burgers蠕变模型
Nonlinear Burgers Creep Model for Unsaturated Soil in Slipping Zone
摘要
Abstract
Based on nonlinear rheological-mechanical theory,a nonlinear Burgers creep model for unsaturated soil in slipping zone was established.In the creep model,the effect of matric suction on the creep behavior of soil,a characteristic of unsaturated soil in slipping zone,was considered,at the same time,the rheological characteristics of nonlinear viscous body related to time and the stress state were also considered,the nonlinear viscous body replaced the linear viscous body in the Burgers creep model.Triaxial creep test for the unsaturated soil in slipping zone was conducted,the experimental results were fitted by the curve of least squares method,and the creep parameters of different matric suction were obtained.At last,the experimental results were compared with the fitting curve of Burgers creep model and the fitting curve of nonlinear Burgers creep model.The comparison results show nonlinear Burgers creep model can better fit the experimental results,for the experimental curves,the coincidence level and correlation coefficient of the fitting curve is obviously higher than those of linear Burgers creep model.关键词
滑带土/非饱和/蠕变/三轴试验/非线性Burgers模型Key words
soil in slipping zone/unsaturation/creep/triaxial test/nonlinear Burgers model分类
建筑与水利引用本文复制引用
刘汉东,李梦姿,杨继红..非饱和滑带土非线性Burgers蠕变模型[J].华北水利水电大学学报（自然科学版）,2017,38(2):43-48,6.基金项目
国家科技支撑计划项目(2015BAB07B08) （2015BAB07B08）
国家水利公益性行业科研专项(201301034) （201301034）
国家自然科学基金青年基金项目(41102203) （41102203）
河南省高等学校青年骨干教师资助计划项目(2014GGJS-067). （2014GGJS-067）
