2019 Volume 14 Issue 2 Pages 179-196
The authors focused on the excellent reinforcing effect of the reinforced wall method which is widely used in land construction, and proposed a reinforced sheet-pile quay wall structure that applies geogrid as a reinforcing material behind the sheet-pile. This study attempted to solve the problems in the practical use of the new structure via pull-out tests, large-scale loading model tests, and centrifuge model tests. As a result, irrespective of differences in air / water or pulling out during static / seismic condition, the authors confirmed the generation of a shear resistance force for geogrids even in loose rubble ground, and the proposed structure was effective at both static and dynamic situations. Numerical analyses showed that it was necessary to sufficiently fix the geogrid to the land side of the active failure surface and particularly the length of the lowest geogrid had a huge influence on the overall external stability. A design method for the new structure was also proposed, based on the aforesaid investigation.
