Abstract: Construction interfaces of RCCD were assumed as transversely isotropic bodies.The mechanical analytic theory of compound materials was used to study the characteristics and rules of the variation of the construction interfaces.A model was proposed to analyze the above-mentioned problems of transversely isotropic bodies.The back-analysis for the parameters reflecting the gradual change characteristics of the construction interfaces was implemented.A three dimensional viscoelastic model was presented to analyze the behavior of RCCD.The analysis of an example indicates that the proposed model could reasonably describe the influence exerted by the construction interfaces of RCCD to the dam behavior.