In order to clarify the earthquake resistance of steel plate cellular bulkheads with embedment, the shaking table tests were carried out on models. Dimensions of cells are 1m in diameter and 1 m in wall height, and embedment ratios (embedment length/wall height) are 0,1/4, and 1/2. The following are majoy results.
1) Under the strong ground motion, the cells behave like rigid body, and their predominant modes are rocking. The effect of embedment is significant on the stability of celluar bulkheads.
2) The resultant force of buckfill pressure is smaller than that of active earth pressure during earthquake by the current design method. The earth pressure on the front part of embedment has the triangle distribution with the largest near the sea bottom, and its resultant force is fairly larger than that of the passive earth pressure during earthquake.
3) When the ground acceleration increases, the mass of cell fill which contributes to the inertia force decreases apparently. This phnomenon is expressed by the experimental equations.
4) The analytical method in which the ground is replaed into springs gives good agreement with the experimental results, and therefore this method is able to evaluate the earthquake stability of steel plate celluar bulkheads with embedment.