岩土工程学报2016，Vol.38Issue(7)：1238-1245,8.DOI:10.11779/CJGE201607010
考虑温度影响的饱和软黏土累积变形特性研究
Characteristics of cumulative deformation of saturated soft clay considering temperature effect
摘要
Abstract
The temperature-controlled cyclictriaxial testson Ningbo soft clayarecarried out to studycumulative deformation, pore pressure, damping ratio and dynamic modulusof soilsunder different temperatures and undrained conditions.Astrain constitutive model is developedconsidering the effects of temperature, initial static deviator stress, confining pressure, overconsolidation ratio and other factors, and the relationship between the model parameters and temperature is obtained.It is shown thatthe temperature has great influence onthecumulative plastic deformation, pore pressure, damping ratio and dynamic modulusof soils.Thecumulative plastic strain, pore pressure anddamping ratio decrease gradually with the increase of temperature,and thedynamic elastic modulus increases with the increase of temperature, thus heat hardening characteristic is revealed.Inaddition, thecalculated resultsusing thestrain constitutive model considering the influence of temperature are consistent withthe experimentalones, which verify the rationality of the model.Furthermore,the proposed model can beused topredictthecumulative plastic strain resultsof soilsunder the same condition of arbitrary temperature.关键词
温控动三轴试验/温度效应/应变模型/累积塑性应变Key words
temperature-controlledcyclic triaxial test/temperature effect/strain model/cumulative plastic strain分类
土木建筑引用本文复制引用
刘干斌,范思婷,陈斌,陶海冰,叶俊能..考虑温度影响的饱和软黏土累积变形特性研究[J].岩土工程学报,2016,38(7):1238-1245,8.基金项目
国家自然科学基金项目 （）
