欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
大型三轴试验结果表明，堆石料在剪切过程中具有明显的应变软化和剪胀特性，其应变软化和剪胀与否取决于土样本身的密度与应力状态：密度越大，围压越低，其应变软化和剪胀性就越明显。通过引入无黏性土的状态相关剪胀理论，对具有不同密实度的堆石料在三轴固结排水剪切过程中的强度和变形特性进行模拟，并与邓肯-张E-B模型和南水模型的模拟结果进行对比，发现该理论仅需一组材料参数就能够较好地反映堆石料的应变软化和剪胀特性。
英文摘要：
The results from large-scale triaxial test show that rockfill will exhibit strain softening response and dilative behavior during shear process. Whether it will happen depends on the density of the material and its stress state. The lower the effective mean normal stress is, the larger the density is, and the more the strain softening and dilative response are. By introducing state-dependent dilatancy theory of cohesionless soils, a series of numerical simulations of the strength and deformation behaviors of saturated rockfill by triaxial consolidation and drainage test under different relative densities have been conducted. Compared with the simulation results of Duncan-Chang＇s E-B model and Nanshui model, it is found that the theory can reflect the strain softening and dilative characters of rockfill through a unique set of parameters for given materials over a full range of densities and stress levels.
同期刊论文项目
同项目期刊论文
Develoment technology of rigidity-drain ile and numerical analysis of its anti-liquefaction characte
期刊信息
位置：