Abstract
The authors have recently proposed aseismic countermeasure for embankment currently in service, in which the toe is reinforced by using a soil-bag structure. Moreover, the performance was examined in a largescale shaking table test using a model embankment with 4m high. As a result, the soil-bag structure was found effective in terms of reducing the response acceleration in the embankment to some extent. However, it was also found that the structure was not robust enough by exhibiting shear deformation during shaking. Accordingly, it is now needed to increase the overall stiffness by increasing the shear resistance of the soilbag structure. A series of direct box shear test was, hence, carried out in order to manifest the characteristics of not only the geotextile-to-geotextile friction but also the soil-bag to soil-bag friction.
