BASIC STUDY ON EFFECTS OF INCLINED CORE STRUCTURE ON SEEPAGE AND DYNAMIC PERFORMANCE OF HEIGHTENED EARTH DAM

Abstract

 In Korea, the heightening the earth dams have been performed for securing the water resource and preventing the disasters such as flood and drought. In addition, the consideration on the safety of heightened earth dam is required as the frequency of earthquake increases in recent years. Therefore, this study was carried out on analyses on the seepage flow and the dynamic response induced by both the sinusoidal wave and earthquake motions as for the 4 kinds of changing the volume of the added core, and the influence on the seepage flow and the dynamic shear stress was discussed. As the results, the seepage line becomes lower and the shear stress, especially in the added core can be reduced, and it can be indicate that the seismic performance of heightened earth dam can be improved.