Three-dimensional Finite Element Method Analysis of Gravity Dam

On the basis of the three-dimentional FEM,the structures of dam body and foundation are analyzed for the gravity dam of Gu county reservoir and the stress and displacement are caculated under five working conditions,then calculation results are analyzed in details.The results indicate that most of the dam body are in pressed state under these working conditions and the stress concentration appears in the dam heel.The dam body deforms a lot under the temperature load,a greater compressive stress exists in dam heel when the temperature goes up and a greater tensile stress appears when the temperature drops.The tensile stress is small owing to the transverse joint.The maximum dynamic displacement appears on the upstream side of the dam and stress concentrations appear in dam heel and dam toe.These conlclusions could provide reference to design and check the gravity dam.