岩土工程学报2016，Vol.38Issue(4)：662-669,8.DOI:10.11779/CJGE201604010
交通荷载应力路径下砂土地基变形特性研究
Deformation behaviors of sandy subgrade soil under traffic load-induced stress path
摘要
Abstract
Under traffic load, the magnitude of deviatoric stress of subgrade soilvariesperiodically, and the principal stress axis rotates continually. In order tostudy the draineddeformationbehaviorscharacteristics of subgrade soil due to traffic load-induced stress path, a series of apple-shaped dynamic cyclic stress path tests and conventional dynamic stress path tests are conducted onK0-consolidated saturated sand using the dynamic hollow cylinder apparatus.Comparisons between the results under the two different stress paths indicate that thecontinuous rotation of the principal stress axis will accelerate the accumulation of the vertical permanent strains and aggravate the degradation of the resilient modulus. And with the increasing of CSR, the discrepancies in thedeformationbehaviors under different stress paths become more apparent. Finally, amodified formula for the resilient modulusis proposed to evaluate the principal stress rotation effects based on the Uzan model.关键词
交通荷载/主应力轴旋转/竖向变形特性Key words
traffic load/principal stress rotation/vertical deformationbehavior分类
建筑与水利引用本文复制引用
熊焕,郭林,蔡袁强..交通荷载应力路径下砂土地基变形特性研究[J].岩土工程学报,2016,38(4):662-669,8.基金项目
国家杰出青年科学基金项目（51025827）；国家自然科学基金项目（51408441）；浙江省自然科学基金项目 （）
