Stress-Deformation Numerical Analysis of Clay Core Rockfill Dam Based on Duncan-Chang E-B Model

Used static finite element method to analyse the clay core rockfill dam of laojunshan reservoir whith Duncan-Chang E-B model. The results shows that the maximum of stress level is 0.78 under completion mode, and the maximum of stress level is 0.9 under normal operating condition. The stress and displacement value of the dam as well as its distribution rule is normal, and the maximum of stress level is less than 1. The possibility of occurring hydraulic split for core-wall is very small, and the dam is in a safe state.