摘要
针对土体内部渗流侵蚀这类特殊工程地质力学问题,系统研究土体渗流侵蚀形成机制、影响因素以及渗流侵蚀引起土体结构强度损伤的量变关系。通过分析渗流侵蚀机制,建立土体内部渗流侵蚀各组分关系,建立土体内部渗流侵蚀本构及控制方程,给出渗流侵蚀引起的土体结构强度损伤关系。以心墙坝为例,利用有限元数值计算分析方法,将所建立的控制方程进行数值计算,对渗流侵蚀进行分析。有限元数值分析计算结果很好地验证了所建立的土体内部侵蚀控制方程、侵蚀损伤弹性模量与侵蚀率之间的函数关系的正确性。
The formation and the influencing factors of seepage erosion in soil and the relationship between the damage to the soil structural strength and the erosion ratio were systematically analyzed. The relationship of the constituents of soil grains,the constitutive equation and governing equations of seepage erosion in the earth structure were established. A relationship of structural strength damage of soil due to seepage erosion was presented. The partial differential equations for the coupled multiple fields based on the governing equations were solved with the finite element method. A core dam was analyzed. The results of the numerical analysis validated the governing equations and the relationship between the damage elastic modulus and erosion ratio.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2015年第5期1031-1038,共8页
Chinese Journal of Rock Mechanics and Engineering
基金
高层次人才科研启动基金项目(201324)
河南省高等学校重点科研项目(15a170001)
河南省科技人才计划
关键词
渗流力学
土体内部侵蚀
本构方程
控制方程
有限元法
seepage mechanics
earth internal seepage erosion
constitutive equation
governing equation
finite element method
