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Influence of Reinforcement Connection Types on Shored Mechanically Stabilized Earth Walls for Widening Existing Embankments
Shored mechanically stabilized earth (SMSE) walls are effective for widening existing embankments, but their deformation mode and failure mechanism have not been elucidated. In this study, combined with the results of large-scale model tests, finite element analysis was employed to investigate the mechanism of SMSE walls. This study focuses on two types of connections, namely, the “Mechanical Connection” and the “Sandwich Connection”. On this basis, a validated numerical model was used to conduct a parametric study of various parameters, such as reinforcement stiffness, load position, foundation conditions, and reinforcement arrangements. The results showed that the calculated results of the numerical analysis are in good agreement with the test results. The “Sandwich Connection” outperforms the “Mechanical Connection” in maintaining the stability of SMSE walls, particularly as the reinforcement stiffness increases. Deformation decreases as the setback distance of the loading increases, and the deformation mode shifts from bulging to overturning. As the foundation mainly affects external wall deformation, the differences in the mechanism between the two types of connection walls are minimal under various foundation conditions. Increasing the length of the secondary reinforcement is the most effective strategy to improve the stability of the SMSE wall with the “Sandwich Connection”.
Influence of Reinforcement Connection Types on Shored Mechanically Stabilized Earth Walls for Widening Existing Embankments
Shored mechanically stabilized earth (SMSE) walls are effective for widening existing embankments, but their deformation mode and failure mechanism have not been elucidated. In this study, combined with the results of large-scale model tests, finite element analysis was employed to investigate the mechanism of SMSE walls. This study focuses on two types of connections, namely, the “Mechanical Connection” and the “Sandwich Connection”. On this basis, a validated numerical model was used to conduct a parametric study of various parameters, such as reinforcement stiffness, load position, foundation conditions, and reinforcement arrangements. The results showed that the calculated results of the numerical analysis are in good agreement with the test results. The “Sandwich Connection” outperforms the “Mechanical Connection” in maintaining the stability of SMSE walls, particularly as the reinforcement stiffness increases. Deformation decreases as the setback distance of the loading increases, and the deformation mode shifts from bulging to overturning. As the foundation mainly affects external wall deformation, the differences in the mechanism between the two types of connection walls are minimal under various foundation conditions. Increasing the length of the secondary reinforcement is the most effective strategy to improve the stability of the SMSE wall with the “Sandwich Connection”.
Influence of Reinforcement Connection Types on Shored Mechanically Stabilized Earth Walls for Widening Existing Embankments
Transp. Infrastruct. Geotech.
Huang, Qiangqiang (author) / Xu, Huan (author) / Geng, Xueyu (author) / Ren, Feifan (author)
2025-01-01
Article (Journal)
Electronic Resource
English
Finite Element Modeling of a Field-Scale Shored Mechanically Stabilized Earth Wall
| British Library Conference Proceedings | 2010