STRESS AND DEFORMATION ANALYSIS OF A CENTER CORE-TYPE ROCKFILL DAM DURING CONSTRUCTION

Abstract

The results of the stress and deformation analysis of a center core-type rockfill dam by finite element method have been reported. Elasto visco-plastic effective stress analysis using the constitutive equation suggested by Sekiguchi and Ohta was used to simulate the elasto-plastic deformation behaviour of compacted dam materials under high overburden pressure. The calcuration results, settlement and the pore water pressure during construction, earth pressure distribution after the completion of construction were compared with measured ones, and the good agreement were verified. The applicability of this analytical method and the suggested input parameter determination procedure were confirmed.