岩土力学Issue(5)：1329-1333,1339,6.
饱和土体静态液化失稳理论预测
Theoretically predicting instability of static liquefaction of saturated soils
摘要
Abstract
By using state-dependent yield function and dilatancy function, a state-dependent non-associated elasto-plasticity hardening model is proposed to simulate the undrained behaviors of saturated soils with different initial densities and confining pressures. According to the second-order work theory, the criteria for potential instability and static liquefaction of saturated soils are proposed. The proposed model and criteria were employed to predict a series of undrained triaxial tests on loose sands. The results showed that the static liquefaction occurs at the hardening stage before the plastic limit, the onset of static liquefaction accompanies with the peak of shear stress; and then the pore water pressure increases and the shear stress decreases with further loading. The stress-strain relationship of the municipal solid waste under undrained condition was also analyzed;the potential instability line was obtained and the onset of static liquefaction was predicted.关键词
饱和土/城市固体废弃物/材料状态/静态液化/二阶功Key words
saturated soil/municipal solid waste/material state/static liquefaction/second order work分类
建筑与水利引用本文复制引用
吕玺琳,赖海波,黄茂松..饱和土体静态液化失稳理论预测[J].岩土力学,2014,(5):1329-1333,1339,6.基金项目
国家重点基础研究发展计划（973计划）课题（No.2012CB719803）；国家自然科学基金（No.11372228）；上海市自然科学基金（No.13ZR1443800）。 （）
