Back Analysis Of Calculation Parameters For Roller Compacted Concrete Dam

Roller Compacted Concrete (RCC) Dam is one new type of dam, which have different characteristics in structure and seepage of normal concrete dam. The methods of back analysis of calculation parameters for RCC dam are systematic studied. The main contents are as follows.(1) According to the characteristic of the synthetical elastic parameters of RCC dam, the object function is established to analyze synthetically elastic modulus on the basis of field similarity theory, and corresponding back analysis method is put forward.(2) Based on principle of minimum potential energy, the formulas for determining connection of the synthetical elastic parameters and noumenon's, the effect zones' elastic parameters are derived. And the method of determining elastic modulus of the effect zones' and thickness are is put forward.(3) A viscoelastic analysis model of RCC dam is established, and on the basis of which, the method of determining the synthetical viscoelastic parameters that are undetermined is put forward. Based on equivalent deformation assumption the back analysis model of determining the viscoelastic parameters of the effect zones is established.(4) The back analysis method of synthetical permeability coefficients is advanced on the basis of the actual data. Based on equivalent flow assumption, the formulas for determining the hydraulic thickness and permeability coefficient of the effect zones are gained.(5) The characteristic of the synthetical temperature linear expansion coefficient is studied, and the back analysis method of it put forward. And based on series -wound and shunt-wound model, the back analysis model for determining the temperature linear expansion coefficient of the effect zones is established.