Laboratory test on the performance of geogrid-reinforced and pile-supported embankment

This paper investigates the behavior of geosynthetic-reinforced and pile-supported (GRPS) embankments through laboratory model tests. The model ground was made using reconstituted soft Ariake clay with thin sand layers. Model piles were made of timber. Geogrids were placed at the top of pile and under the embankment. Model embankment was sand and additional load was exerted on the embankment top. The test results show that the increase in the length of both pile and reinforcement or decrease in the piles improvement ratio creates an economical solution for GRPS embankment system.