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      • Open Access Article

        1 - Numerical Parametric study of Geosynthetic-Gabion Walls under Different Surcharge Loads
        Mahmoud Khalatbari Abolfazl Rezaeipour Rashid Hajivand Dastgerdi Mehran Ghannad Sahand Shokri
        The finite element procedures are extremely useful in gaining insights into the behavior of reinforced soil retaining walls. In this study, a validated finite element procedure was used with Abaqus for conducting a series of parametric studies on the performance of gabi More
        The finite element procedures are extremely useful in gaining insights into the behavior of reinforced soil retaining walls. In this study, a validated finite element procedure was used with Abaqus for conducting a series of parametric studies on the performance of gabion facing wall with 2m vertical spacing Geo-grid under different surcharge loadings. The performance of the wall was presented with facing horizontal deformation along wall height, and compare to centrifuge model and field measurements. The soil properties include density, Young modulus, Poisson’s ratio, and internal friction angle were among major variables of investigation. At low loading conditions, the impact of increasing density has a significantly greater effect on the deformation of the wall compared to high loads. As the loading increases, the effect of reducing the Young’s modulus on deformations decreases. Moreover, with increasing loading, the effect of deformations due to the decrease in internal friction angle increases, but the rate of this increase decreases. The influence of Poisson’s ratio on the deformation of the walls has decreased with increasing of loading. The results show that by the increase in load, even at a shallow depth, the applied stresses on the soil increase, leading to greater deformation of the soil above the wall, and the maximum magnitude is created at a higher elevation. Manuscript profile
      • Open Access Article

        2 - Effect of Pile Cap Geometry on Soil Arching Behavior in GRPS Embankments: A Comparative Study
        mohammad amir mirzaei Monireh Karimian Mobarakeh Arif Khan Adriko norman burua rashid hajivand dastgerdi
        This comprehensive study in geotechnical engineering presents valuable insights and advancements in the field of Geosynthetic-Reinforced Pile-Supported Embankments (GRPS). The study focuses on the analysis of pile caps in GRPS using three-dimensional finite element mode More
        This comprehensive study in geotechnical engineering presents valuable insights and advancements in the field of Geosynthetic-Reinforced Pile-Supported Embankments (GRPS). The study focuses on the analysis of pile caps in GRPS using three-dimensional finite element modeling, specifically employing PLAXIS-3D software. The research investigates the effects of different pile head shapes on soil arching, settlement, and stress distribution, emphasizing the significance of pile head selection for enhancing soil arching and reducing ground settlement. The study recommends larger pile heads with flattened top surfaces, as demonstrated in sections 4 and 5, as optimal choices for pile head design in GRPS projects. The proposed analytical model captures the time-dependent settlement behavior of subsoils, but a slight underestimation of settlement after embankment construction suggests the need for further consideration of factors like pile settlement and bottom sandy silt settlement. Future research should refine the analytical model to improve settlement predictions by incorporating these factors. Additionally, the study highlights the importance of investigating GRPS embankments with floating piles, complex construction processes, water effects on soil arching, and embankment performance. It is noted that earthquake loading was not specifically addressed, indicating the need for comprehensive research in this area. Overall, this study contributes to the knowledge of GRPS embankments and provides recommendations for design, construction, and future research directions. Manuscript profile