INVESTIGATION OF RESIDUAL DEFORMATION OF SMALL EARTH DAMS IN FULL-SCALE SHAKING TABLE TESTS

Abstract

 In this study, full-scale shaking table tests for embankments were carried out in order to estimate the earthquake resistance of small earth dams with geosynthetics clay liner for a short supply of clay material which requires sloping core zones at many sites. In the experiment, two types of embankments of 3 m of height were constructed in large soil containers respectively. The dynamic behaviors of embankments were observed by sinusoidal wave of maximum acceleration of 471 Gal. After shaking, several longitudinal cracks without water leakage were occurred at the crest of the embankment with geosynthetics clay liner. Finally, a series of the three-dimensional terrestrial laser measurements was tried to grasp the characteristics on the residual deformations of the embankments. As a result, it was found out that some locations and forms of the cracks can be confirmed relatively. Therefore, it was indicated that three-dimensional terrestrial laser scanner is effective as a utility of the measurement method.