SHAKING TABLE TEST OF A SEPARATED CONCRETE GRAVITY DAM

Abstract

Concerning the seismic performance evaluation of concrete gravity dams for Level 2 earthquake motions, when there is some fear of continuous tensile cracks between the upstream and downstream faces, further studies on ultimate seismic resistance of the dam need to be conducted. The studies include analyses to confirm the stability of the upper block of the concrete dam body separated. The shaking table tests for the test models, the shape of which is that of a concrete gravity dam, were conducted. Dynamic behaviors of the upper block of a concrete dam were made an observation during shaking. Effects of uplift acting on the separated surface of the model and dynamic water pressure acting on the face of the model on the behavior of the upper block were analyzed.