The rigidity distribution of the gravity dam is usually determined with many difficulties because of complication of its geometry and the connection with the adjacent portion of the reservoir, as well as the action of hydrodynamic pressure.

• 重力型挡水坝的型体及与相邻坝段的连接都很复杂,加之还有动水压力的作用,结构刚度分布不易清楚确定。