Stress-strain characteristics of embedded concrete face rockfill dam

The embedded CFRD is a new idea to solve the safety of high CFRD. Combining a 150 m-CFRD project, the nonlinear finite element method is used to study differences in stress-strain characteristics of the new type CFRD and conventional CFRD. The influences of height, top width and slope of concrete dam on the stress-strain characteristics of the CFRD are studied. The results show that the embedded CFRD and conventional CFRD have no significant change in dam settlement and displacement of peripheral joints. The upstream deformation of rockfill and the stress-strain behavior of the face slab have-obvious change. The embedded CFRD has a certain inhibiting effect on the upstream deformation of the rockfill dam. Due to the shortening of the slab length, the static stress-strain condition of the face slab is improved, but the dynamic stress condition of the face slab has a slight disadvantage. The dam height is governing the shape parameter. Considering the influences of stress and displacement of rockfill dam, face slab and concrete dam, the height of concrete dam can be reasonably determined.