Three Dimensional Static and Dynamic Finite Element Calculation and Analysis of the Sand Gravel Panel Dam at Xiaoshankou Hydropower Station
Xiaoshankou Hydropower Station has a soft rock foundation,a long dam body,and very complex joints in the mixed dam.In order to solve the difficulties of deformation control and high seismic resistance design faced by the dam body,combined with the design of sand and gravel panel dam structure and dam shell material,a three-dimensional finite element model was constructed,which includes the dam body,mudstone,and sandy mudstone foundation.Nonlinear Duncan E-B model is usedin static constitutive analysis,and the equivalent linear viscoelastic model is usedin dynamic constitutive analysis.Through this model,a comprehensive and systematic study and analysis of the stress and deformation of the dam body are conducted,and the seismic performance and stability of the dam body are verified.The results indicate that the deformation patterns exhibited by the dam body under various working conditions are reasonable.At the same time,the maximum tensile stress and compressive stress of the concrete panel meet the allowable stress requirements of the concrete material used,and the seismic performance and stability of the dam body meet the specification requirements.
Xiaoshankou Hydropower Stationsand gravel panel damstatic and dynamic finite element analysisstress strain
万方数据
维普
