Non-linear 3D simulation of the construction and impounding of a CFRD

A general methodology is presented for the non-linear 3D numerical simulation of the phased construction and subsequent reservoir impoundment of a concrete faced rockfill dam built in a narrow canyon. The non-linear stress-strain relationship for the dam material is based on the model by Duncan et al. [19801], which accounts for the stress dependency of the elastic modulus. The predicted behaviour is in qualitative agreement with the observed behaviour of existing dams. The methodology is used to study the performance of the Messochora CFRD in Greece.