SHAKER TEST AND ANALYSIS OF UNDERGROUND WALL FOR EVALUATION OF EFFECTIVENESS IN REDUCTION OF GROUND VIBRATIONS

Abstract

Underground wall is one of useful techniques to reduce the ground vibrations generated by artificial sources. To study such effectiveness of underground wall, forced vibration tests using a shaker were conducted in the construction site where the soil-cement wall was constructed. The experimental results showed that underground wall can considerably reduce ground vibrations just behind the wall. It also showed that the effectiveness depends on frequency component. In the present research, 3-dimensional finite element method combined with thin layer model was successfully employed to simulate the tests. As well as the field tests, the analysis demonstrated the effectiveness of underground wall in reduction of vibrations.