Abstract
Behavior and safety of a concrete gravity dam is analyzed by three-dimensional FEM, especially focusing on the following two points; (1) the influence on deformation and safety of the dam body by placing RCD concrete along temporary forms at the transverse joint and (2) the relationship between safety against shear stress and shear strength of horizontal construction joint depending on preparation work of the joint surface. The analysis shows that the influence caused by difference of strength and stiffness of internal concrete along transverse joint is rather small, and it is thought that it can be adoptable to place RCD concrete along transverse joint. And it can be adoptable to reduce strength of horizontal construction joint considering safety factor along the joint. However, considering the safety against strong motion caused by earthquake, it is thought that a further analytical and experimental approach is needed.
