岩土力学2011，Vol.32Issue(2)：585-592,8.
粗粒土三轴试验数值模拟与试样颗粒初始架构初探
Numerical simulation triaxial tests for coarse-grained soil and preliminary study of initial fabric of sample grain
摘要
Abstract
The initial fabric of sample grain is a hard artificial controlling factor in the laboratory triaxial tests of coarse-grained soil.Based on cellular automata method, combining the laboratory triaxial tests of coarse-grained soil developed the HHC-CA model which generated the coarse-grained soil samples of different initial fabrics of grain to characterize the heterogeneous and random distribution of coarse-grained soil grain group.Then by means of the fast lagrangian analysis of continua in three dimensions (FLAC3D), conducting triaxial numerical simulation tests of coarse-grained soil and discussing the relationship between the gravel contents of sample shear band and samples and internal friction angle.Numerical simulation results indicate that the relationship between internal friction angle of coarse-grained soil and gravel contents of samples shear band were increasing function in the same size grading.According to the increasing of samples gravel contents, the internal friction angle might reduce, but the mean internal friction angle significantly increases with the increment of samples gravel contents.关键词
粗粒土/颗粒初始架构/元胞自动机/剪切带/砾石含量分类
建筑与水利引用本文复制引用
王光进,杨春和,张超,马洪岭,冒海军,侯克鹏..粗粒土三轴试验数值模拟与试样颗粒初始架构初探[J].岩土力学,2011,32(2):585-592,8.基金项目
国家重点基础研究发展规划(973) (No.2009CB724602, No.2009CB724603) （973）
国家杰出青年科学基金(No.E50725414) （No.E50725414）
科技部重大国际合作计划项目(No.2007DFB60100 ) （No.2007DFB60100 ）
国家自然科学基金(No.50774076) （No.50774076）
岩土力学与工程国家重点实验室开放课题(No.Z000607) （No.Z000607）
岩土力学与工程国家重点实验室前言探索性项目(No.SKLQ003) （No.SKLQ003）
重庆大学研究生科技创新基金(No.CDJXS1124007). （No.CDJXS1124007）
