PERFORMANCE OF ROCKFILL DAM CONCRETE FACE IN 3D CONDITIONS BY THE RESULTS OF NUMERICAL MODELING
The article presents the results of numerical modeling of 3D stress-strain state (SSS) of a 100 m high concrete faced rockfill dam. It is shown that tensile stresses in the reinforced concrete face may appear on the downstream face and in the zone of its contact with the foundation as well as in the end side sections. In the direction from one side to the other the face in most sections is compressed. Cutting the face by vertical joints has small impact on the face SSS. To avoid tension it is useful to provide an outline joint at a distance of 10-15 m from the perimeter joint. Dam construction sequence affects SSS of the face. In the dam constructed in two stages SSS of the face is more favorable than the same in the dam constructed in 1 stage.