STUDY ON THE USE OF HEAVY-WEIGHT SOLIDIFIED BLOCK FOR DESIGN OF GRAVITY- TYPE QUAY-WALL AND SEAWALL

The reduction effect of earth pressure at the time of earthquake by using heavy-weight solidified block was examined by the calculation and the experiment. It was shown that the 45 % reduction of earth pressure can be obtained in the case of horizontal seismic intensity 0.25 by the use of the heavy weight solidified block at the bottom and the lightweight block at the top, by using the slice method. The heavy weight solidified block (density 2.45 g / cm3) was placed behind the gravity type quay-wall in the model and the effect on the reduction of earth pressure was examined by the centrifugal shaking table test. Through the experiments, it was confirmed that there was a significant earth pressure reduction effect on the front side of the solidified block.