Existing dams are an important part of the safety problems, because climate change is
related to increased earthquakes magnitude and the PMP and PMF.
Dam safety problems are no exceptions. Especially, the composite dam which is
constructed other dam types has characteristic of different behavior during the earthquake.
In the evaluation of the seismic stability of a composite dam, besides others, the main
problem is the dynamic interaction between concrete gravity dam and soil embankment.
In this study is analyzed dynamic behavior characteristic of composite dam, which is
composed of concrete gravity and embankment section, using centrifuge (including
shaking table test). In this test, prototype model is 1/40 scale model of the existing
composite dam and the test condition is centrifugal a 40g. In addition, the Hachinohe
(long-period) and Ofunato (short-period) waves are applied.
The characteristics of dynamic behavior are compared with those obtained by the
centrifuge test which is carried out in the earthquake wave of Korea earthquake
conditions. Furthermore, the results obtained in this the centrifuge test are compared with
the 3D numerical analysis of the composite dam.