Numerical investigation of time dependent behavior of geosynthetic reinforced piled embankments

A Critical Review on the Performance of Pile-Supported Rail Embankments under Cyclic Loading: Numerical Modeling Approach

“…Numerous researchers have conducted multiple computational simulations [28,49,[67][68][69][70][71] to examine the load transfer process in a pile-supported embankment. The numerical investigation by Han and Gabr [69] assessed the effect of embankment height, pile elastic modulus, and geosynthetics tensile stiffness on the process of load transfer.…”

“…Bhasi and Rajagopal [68] investigated the effect of embankment fill properties, pile modulus, and geosynthetic stiffness on the time-dependent behavior of piled embankments using 2D and 3D models. The authors found out that the friction angle of the embankment fills influences efficacy.…”

Effects of soil arching on behavior of pile-supported railway embankment: 2D FEM approach

“…In the past, various numerical [8,[13][14][15][16] as well as experimental studies [14][15][16][17] were carried out to investigate the load transfer mechanism in a piled embankment. A numerical study performed by Han and Gabr [8] considered the impact of three factors namely: embankment height, tensile stiffness of geosynthetics, and the elastic modulus of the pile on the load transfer mechanism.…”

“…Different idealization methods were used in 2D plane-strain condition and found that equivalent area (EA) method yielded the closest results to 3D and field results. Bhasi and Rajagopal [15] studied the influence of embankment fill properties, and the pile modulus considering 2D axisymmetric and 3D models. They also reported that the efficacy is affected by friction angle.…”

“…It is widely acknowledged that the increase in train speed would impose higher stresses on track foundations [21][22]. In addition, the past studies have considered the arrangement of piles in a square pattern [8,13,15]. However, a triangular pattern can be useful for railway embankments [23].…”