YANG Hui-chen, JIA Jin-sheng, ZHENG Cui-ying

State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, IWHR, Beijing 100038, China

Abstract: The improved finite element equivalent stress method is proposed and studied in this paper. It is proved that higher accuracy is acquired through the improved method, especially when the size of FEM model is large. The difference and similarity of results derived from conventional finite element equivalent stress method, material mechanical method and the improved finite element equivalent stress method are analyzed. Results show that the improved finite element equivalent stress method can avoid stress concentration, and it also can better reflect the influence of base stiffness on the equivalent stress. The application to the equivalent stress analysis of Shoukoubao CSG dam, the first CSG dam in China, gets quite satisfactory results.

Key words: gravity dam, equivalent finite element stress method, material mechanical method, Shoukoubao project

Published in: Journal of China Institute of Water Resources and Hydropower Research (Vol. 11 No. 2, 2013)