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FEM 2D NUMERICAL SIMULATIONS REINFORCED EMBANKMENT ON SOFT GROUND BY LIMITED LIFE GEOSYNTHETICS (LLGS)

Geosynthetics have been successfully used on reinforced embankment for short term stability on soft ground. The considerations of natural fibers as reinforcement materials has been increasingly used in recent geotechnical applications. Natural fibers are renewable fibers that have different forms such as continuous, random oriented and woven fabric derived from Kenaf, coconut, coir, jute, etc. These fibers are called Limited Life Geosynthetics (LLGs) for geotechnical engineering applications. Moreover, the simulations using finite element method is developing rapidly. A full scale field test embankment using Kenaf LLGs reinforcement with silty sand backfill was constructed on soft Bangkok clay. The behaviors of the full scale test embankment were investigated. PLAXIS 2D software was used to simulate the performance of full-scale reinforced test embankment. The numerical predictions were compared with the measured data in terms of settlement, excess pore water pressures and deformation of reinforcement. The results of the analyses show that the finite element method analysis agreed with the measured settlement data. There was close agreement between the measured and simulated data.