摘要
文章通过对合肥地区典型非饱和膨胀土试样进行大量的单轴抗压强度试验及单轴压缩蠕变试验,获得了土样的抗压强度及蠕变特性;基于试验结果,运用Burgers、Maxwell模型,通过数值模拟比较,分别提出了在100、200 kPa应力水平作用下典型非饱和膨胀土的黏弹性参数,并确定了Burgers模型能够准确地描述膨胀土的蠕变特性,从而为膨胀土工程设计和分析提供理论依据。
Through the mass uniaxial compression tests and creep experiments of the typical unsaturated expansive clays in Hefei area,the basic behavior of clays on creep and compressive strength was obtained.Based on the results of the tests and using the Burgers model and Maxwell model,the viscoelastic parameters under 100 kPa and 200 kPa stress conditions are revealed respectively by numerical simulation.It is proved that the Burgers model can accurately reflect the creep characteristics of expansive clays.The study provides a reliable theoretical basis for the engineering design and analysis of expansive clays.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第11期1665-1668,共4页
Journal of Hefei University of Technology：Natural Science
关键词
膨胀土
蠕变
黏弹性模型
expansive clay
creep
viscoelastic model
