摘要
对广西南宁膨胀土进行了一系列室内压缩蠕变试验,得出了相应的蠕变曲线。运用K-H体模型和Bu体模型进行对比研究,确定了正常应力条件下非饱和南宁膨胀土的粘弹性模型和各流变常数,提出了正常应力条件下南宁膨胀土的本构方程及蠕变方程。为膨胀土工程设计和分析提供可靠的理论依据。
On the basis of a series of indoor compression creep tests for unsaturated Nanning expansive soils, the corresponding creep curve was gotton. Comparative study of the K - H model and Bu model shows that the viscoe- lastic model and the theological constant can be determined for the normal stress condition of Nanning unsaturated expansive soils. The constitutive equation and the creep equation of the expansive soils were also obtained for the soil. The result provides a reliable theoretical basis for the expansive soil engineering design and analysis.
出处
《自然灾害学报》
CSCD
北大核心
2009年第3期72-78,共7页
Journal of Natural Disasters
基金
湖南省自然科学基金资助项目(08JJ3092)
湖南省教育厅重点资助项目(07A017)
关键词
膨胀土
粘弹性模型
对比研究
expansive soil
viscoelastic model
comparative study
