ABSTRACT
”A geotextile reinforced road embankment on deep stabilisation columns in soft subsoil” has been studied. At the test case, there has been built a new bridge over Sipoo River. The deep stabilisation has been used to improve the very low stability (F≤1) of the bridge embankments. The thickness of the very soft silt and clay layers beside the Sipoo River are 10...20 m. During the stabilisation the displacements of the riv-erbanks were monitored with inclinometers and the pore pressure was measured with piezometers. Over the stabilised columns there is a woven georeinforcement, which is used to improve the arching in the embankment material and to carry the load between the columns on-to the columns. The instrumentation and measuring results of the geotextile and the embankment have been presented and the measuring results have been verified with FEM-calculations.
