A Study on the Bearing Capacity of Cement-Sand-Gravel Dam Foundation

Hydraulic model test is used to explore the stress distribution and bearing capacity of cement-sand-gravel dam foundation. Through stepwise and multi-level loading of the dam body, the stress distribution of the dam body under hydraulic load is obtained along with the stress distribution under the dead weight of the dam body. Experiment shows that under the action of dead weight, both the dam body and the foundation are subjected to compression, with higher compressive stress in the middle and lower stress on the two sides. When the upstream hydraulic load acts on the dam body, there is a change of stress distribution pattern of the dam body. The largest stress occurs in the middle and downstream part of the dam foundation. The radial displacement of the dam body changes to displacement in downstream direction. The displacement of the upper part of the dam body is higher than that of the lower part of the dam body, with the maximum displacement occurring in the middle of the dam.