岩土工程学报Issue(1)：112-118,7.DOI:10.11779/CJGE201501013
饱和砂土液化后流体本构模型研究
Constitutive model for fluid of post-liquefied sand
摘要
Abstract
The static load tests on post-liquefied saturated Nanjing fine sand are carried out using the hollow cylinder apparatus. The effect of the initial effective confining pressure and loading rate on the fluid characteristics of post-liquefied saturated Nanjing fine sand is taken into account. The results show that the development process of the shear stress and pore water pressure ratio have obvious two-stage characteristics in static loading process, and they have a a good linear relationship. The effective confining pressure and the static loading rate have obvious influence on the relationship between them. On this basis, a constitutive model for fluid with rate and pore water pressure-dependent static loading process is proposed. In this model the friction resistance between soil particles and the viscous resistance between soil and water are respectively expressed as the thixotropic shear-thinning fluid and non-time-variant shear-thinning fluid. Finally, experiments and comparisons between the predicted curves and other researchers′test results are carried out, indicating that the proposed constitutive model has good applicability.关键词
孔压/加载速率/本构模型/剪切稀化流体Key words
pore water pressure/loading rate/constitutive model/shear thinning fluid分类
建筑与水利引用本文复制引用
周恩全,王志华,陈国兴,吕丛..饱和砂土液化后流体本构模型研究[J].岩土工程学报,2015,(1):112-118,7.基金项目
国家自然科学基金重大研究计划集成项目（91215301）；国家自然科学基金项目（51378257）；江苏省自然科学基金项目 （）
