Analysis The Impact of Railway Track Loading on Connection Stability in Segmental Geosynthetic Reinforced Soil Retaining Walls
Lukman Nul Hakim, Prof. Ir. Suryo Hapsoro Tri Utomo, Ph.D.,IPU., ASEAN.Eng ; Ir. Latif Budi Suparma, S.T., M.Sc., Ph.D.
2025 | Tesis | S2 Mag. S. & T.Transportasi
The thesis examines the behaviour and stability of segmental geosynthetic reinforced soil (GRS) retaining walls when subjected to static and cyclic loads caused by railway traffic under different type of track, type of train load, train speed, and axle load. Segmental GRS retaining walls provide facing modules that are readily available and are easy to construct and also cost-effective and can be adapted to various topographical and geometrical situations. This study aims to assess the vertical stress and stability of the connection between segmental facing units and geosynthetic reinforcements under different load circumstances.
The study uses analytical models to model the impacts of railway load on segmental GRS retaining walls. Vertical stress acting on walls is calculated under different type of track circumstances. Net connection force as the variable that determining connection failure is also calculated under some various mechanism. Variations of axle load which 13-tonnes and 17-tonnes, type of track, type of railway load, and number of blocks as reinforcement spacing is used to analyse the specific response of connection stability on segmental GRS walls. Parametric study is also conducted with different bulk modulus and depth of facing block to check the optimum dimension of facing blocks. The impact of external factor like water in connection stability is also considered. Some laboratory experiment data from previous studies are used to validate the result.
The key findings demonstrate that the stability of the connections in segmental GRS walls is greatly affected by various factors, including the features of the railway load, the type of railway track, train speed, the number of blocks in the adjacent reinforcing layer, the depth of the block facing, and the unit weight of the block. The results of this study enhance our comprehension of the behaviour of segmental GRS retaining walls with regards to connection stability. Additionally, they offer valuable practical knowledge for engineers and designers working in the railway construction sector.
The thesis examines the behaviour and stability of segmental geosynthetic reinforced soil (GRS) retaining walls when subjected to static and cyclic loads caused by railway traffic under different type of track, type of train load, train speed, and axle load. Segmental GRS retaining walls provide facing modules that are readily available and are easy to construct and also cost-effective and can be adapted to various topographical and geometrical situations. This study aims to assess the vertical stress and stability of the connection between segmental facing units and geosynthetic reinforcements under different load circumstances.
The study uses analytical models to model the impacts of railway load on segmental GRS retaining walls. Vertical stress acting on walls is calculated under different type of track circumstances. Net connection force as the variable that determining connection failure is also calculated under some various mechanism. Variations of axle load which 13-tonnes and 17-tonnes, type of track, type of railway load, and number of blocks as reinforcement spacing is used to analyse the specific response of connection stability on segmental GRS walls. Parametric study is also conducted with different bulk modulus and depth of facing block to check the optimum dimension of facing blocks. The impact of external factor like water in connection stability is also considered. Some laboratory experiment data from previous studies are used to validate the result.
The key findings demonstrate that the stability of the connections in segmental GRS walls is greatly affected by various factors, including the features of the railway load, the type of railway track, train speed, the number of blocks in the adjacent reinforcing layer, the depth of the block facing, and the unit weight of the block. The results of this study enhance our comprehension of the behaviour of segmental GRS retaining walls with regards to connection stability. Additionally, they offer valuable practical knowledge for engineers and designers working in the railway construction sector.
Kata Kunci : Segmental, GRS, Retaining Walls, Railway Load, Connection Stability.
