Three-dimensional Stress-deformation Analysis And Panel Reinforcement Optimization Of Straight Concrete Slab Rockfill Dam

Anti-seepage concrete face rockfill dam with thin panel,the dam type in 20 years in adapt to the complex topography and geological conditions,seismic performance and construction quality control and testing technology has made great progress.Concrete face rockfill dam of is the most important part of the degree of deformation of dam body stability and security.Part of the concrete face rockfill dam has been built for dam deformation and fracture caused by uneven settlement panel,resulting in a large number of leakage,had a great influence on the normal operation of the dam body.Therefore,the concrete face rockfill dam stress and deformation of the dam body and panel of study is indispensable.This paper research on concrete face rockfill dam has carried on the finite element numerical calculation,mainly includes the following contents:1.The use of large finite element software ANSYS to establish the three-dimensional finite element model of concrete face rockfill dam,to carry on the various characteristics of the water level of the face rockfill dam seepage analysis for the project,calculate the various characteristics of concrete face rockfill dam water level conditions of seepage flow,and to determine the characteristics of the water level inside the dam body under the condition of saturation line.Panel for the concrete face rockfill dam engineering stress and strain finite element analysis provides the premise;2.Write the finite element software ANSYS can access the Duncan-Chang,a constitutive model for the application.The constitutive model program for three dimensional analysis of concrete face rockfill dam,the soil material constitutive program can not only calculate the credible dam stress and deformation as a result,and makes the calculation is simplified and overcome a lot of large finite element software is lack of material constitutive model of soil,and also avoid writing a whole set of earth and rockfill dam analysis finite element program the amount of manpower and time.3.The stress and deformation characteristics of concrete slabs studied the numerical calculation,the simulation results consistent with and the measured results in the literature;4.Studied the stress and deformation of the concrete slabs in the longitudinal reinforcement ratio for change the impact between 0.30%?0.45%,and the BP neural network optimization algorithm to calculate the concrete slabs of optimum reinforcement ratio of longitudinal reinforcement;...