Abstract
In order to design embankment dams to resist earthquakes, it is essential to evaluate appropriately earthquake loading and shear strength for use in the seismic stability analysis. Seismic force acting on embankment dams is computed by using acceleration records of actual earthquakes. On the basis of response computations to different input motions having various frequency characteristics, a relationship for the induced maximum acceleration with the frequency characteristics of the ground motion is established. Undrained monotonic and cyclic strength of compacted rockfill and earth-rock mixture are tested and compared to drained strength. The shear strength for use in the stability analysis is discussed based on the experimental results.
