Dynamic Response Analysis and Safety Evaluation of Madushan Gravity Dam

According to the actual engineering conditions of Madushan RCC Gravity Dam,the 3D FEM model of the dam and its foundation was set up.Using the response spectrum method,the seismic response of dam was calculated and analyzed,and the responses of earthquake acceleration,displacement and stress of the dam and their distribution laws were studied,analysis of the changes of the displacement and stress after the seismic loaded.Under the design earthquake loading,the maximum displacement response occurred at the dam crest with 7.59 mm.The stress response of dam body is 1.8 MPa,which occurred at the heel.The maximum acceleration response occurred at the dam crest with 1.466 m/s2.The calculation showed that the intensity of the dam meets the requirements under the design earthquake.