Effect of soil-reinforcement interaction coefficient on reinforcement tension distribution of reinforced slopes

Numerical modeling of reinforcement forces in geosynthetic reinforced soil slopes

“…In the formulation proposed by Djeffal and Belkacemi (2020), the phase 1 enables to select the reinforcement tensile force in slope surface, and in the second phase, there will be a redistribution of the reinforcement force by considering the pullout resistance. The implicit steps in the top-down procedure are shown in Fig 1 . In the present paper, we use safety factor FS>1 in all stages (internal and external stability).…”

“…In the present formulation, mobilized reinforcement tensile resistance is considered as the additional resistance needed to maintain upper layers in equilibrium as a single block. Step by step, starting from the top layer to the bottom, the reinforcement tensile resistances are then determined by considering the mobilized tensile resistance in upper reinforcements as known independently of forces in the lower layers (Djeffal and Belkacemi, 2020).…”

“…The interaction coefficient has a significant influence on the form of reinforcement force distribution (Djeffal and Belkacemi, 2020;Shukla et al, 2009;Feng et al 2018Feng et al , 2019Mirzaalimohammadi et al, 2019). In this approach, the choice of the soil-reinforcement interaction coefficient is derived from the choice of structural, geometrical, and mechanical characteristics of the reinforcement.…”

“…Furthermore, the effects of the location of reinforcement force with the target safety factor and the critical failure surface are investigated and analyzed based on the analysis of the calculation results. Djeffal and Belkacemi (2020) developed a procedure to evaluate soil reinforcement forces using common classical limit equilibrium procedures by considering the soil-reinforcement interaction coefficient effect on reinforcement tension distribution, on mobilization level of reinforcement tensile force and on mobilized level of soil shear strength.…”

“…To study the distribution of reinforcement forces along the depth of reinforced soil slopes, number of simulations of reinforced slopes using the formulation proposed by Djeffal and Belkacemi (2020) were carried out. The factors that may affect the tension distribution in the reinforcement layers were also studied.…”