EXAMINATION OF VACUUM-INDUCED CONSOLIDATION METHOD IN CONSTRUCTION OF LARGE-SCALE EMBANKMENT ON SOFT GROUND

Abstract

Kumamoto rail yard of Kyushu Sinkansen is planned to be constructed on soft clay layer, so consolidation-promotion method is necessary. Pre-load method is often used as consolidation-promotion method, but applying of vacuum-induced consolidation method is planed for reducing deformation of neighboring structures. Therefore, in this area, two types of experimental embankments with Pre-load method and vacuum-induced method were constructed. In this paper, we evaluated effect and influence of these methods, and examined consolidation-promotion method on constructing rail-yard embankment.