SUPER-SOFT GROUND MEASURES AND ENVIRONMENTAL VIBRATION REDUCTION BY DIVIDED BOX BAG METHOD

Abstract

The divided box bag method(D·BOX Method) is developed as a modern earth reinforcement method using "soil bags". The case studies of the construction of a road on a very soft ground(marshy place) by the D·BOX Method and the loading test on the D·BOX bags at the same marshy place by the road are presented. The D·BOX bags with crushed stones inside act as a permeable layer and promote the local consolidation and strengthening of the very soft soil just under the D·BOX bags in a few weeks. In addition, the D·BOX bags also act as an apparatus damping the traffic vibration, because the vibration energy is dissipated as the frictional heat energy between soil particles in the D·BOX bags. The case studies of the in-situ vibration tests using the D·BOX bags are also reported.