SEISMIC PERFORMANCE OF GEOTEXTILE-REINFORCED SOIL WALL WITH DOUBLE FACING SYSTEM : DYNAMIC CENTRIFUGE MODEL TEST

概要

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This paper shows the results of the dynamic centrifuge model test that is carried out to confirm seismic stability of the geotextile-reinforced soil wall which has a double facing system with a vertical layer to absorb the deformation between the facing concrete panels and reinforced backfill. In the test, authors make the 20-meters-high model of the wall under the 50G centrifugal field and investigate the influences of presence of the facing concrete panels and length of geotextile on the seismic stability of the wall. The structural characteristics of the wall obtained from this test are as follows; 1) the facing concrete panels and reinforced backfill behave integrally and are sufficiently stable, and 2) the wall has high seismic performance even if the length of geotextile is designed as unisometric arrangement.