Abstract
In order to evaluate the effects of modeling transverse joints on the static behaviors of deformation and stress in existing arch dams, numerical analysis was carried out. The elastic deformation is observed in the dam which sustains the influence of horizontal arch displacement, then no effect is appeared of modeling transverse joints in an arch dam. Affected of variable conditions of transverse joints in an arch dam, the inelastic deformation is shown in the dam which excels the influence of vertical cantilever displacement. Affected of modeling transverse joints in an arch dam which seems to behave the nonlinear deformation, the concrete stress level and direction on the downstream surface in winter are different from the dam which seems to behave the linear deformation.