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Moslemi Petroudi, Nima, Ghasemzadeh Tehrani, Hossein, Aghayan, Iman, Bagheri, Mohsen. (1406). Enhancing the Performance of High-Speed Railway Slab-Ballast Transition Zones Using Geotextile Reinforcement: A Dynamic-Equivalent 3D Finite Element Investigation. پژوهشنامه مدیریت اجرایی, 3(2), 87-101. doi: 10.22080/ceas.2026.31946.1105
Nima Moslemi Petroudi; Hossein Ghasemzadeh Tehrani; Iman Aghayan; Mohsen Bagheri. "Enhancing the Performance of High-Speed Railway Slab-Ballast Transition Zones Using Geotextile Reinforcement: A Dynamic-Equivalent 3D Finite Element Investigation". پژوهشنامه مدیریت اجرایی, 3, 2, 1406, 87-101. doi: 10.22080/ceas.2026.31946.1105
Moslemi Petroudi, Nima, Ghasemzadeh Tehrani, Hossein, Aghayan, Iman, Bagheri, Mohsen. (1406). 'Enhancing the Performance of High-Speed Railway Slab-Ballast Transition Zones Using Geotextile Reinforcement: A Dynamic-Equivalent 3D Finite Element Investigation', پژوهشنامه مدیریت اجرایی, 3(2), pp. 87-101. doi: 10.22080/ceas.2026.31946.1105
Moslemi Petroudi, Nima, Ghasemzadeh Tehrani, Hossein, Aghayan, Iman, Bagheri, Mohsen. Enhancing the Performance of High-Speed Railway Slab-Ballast Transition Zones Using Geotextile Reinforcement: A Dynamic-Equivalent 3D Finite Element Investigation. پژوهشنامه مدیریت اجرایی, 1406; 3(2): 87-101. doi: 10.22080/ceas.2026.31946.1105

Enhancing the Performance of High-Speed Railway Slab-Ballast Transition Zones Using Geotextile Reinforcement: A Dynamic-Equivalent 3D Finite Element Investigation

Civil Engineering and Applied Solutions
دوره 3، شماره 2، تیر 2027، صفحه 87-101    اصل مقاله (1.22 M)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.22080/ceas.2026.31946.1105
نویسندگان
Nima Moslemi Petroudi* 1؛ Hossein Ghasemzadeh Tehrani1؛ Iman Aghayan1، 2؛ Mohsen Bagheri3
1Faculty of Civil Engineering, Shahrood University of Technology, Shahrood, Iran
2Department of Civil & Environmental Engineering, University of Wisconsin, Milwaukee, WI 53211, USA
3Faculty of Civil Engineering, Babol Noshirvani University of Technology, Babol, Iran
تاریخ دریافت: 08 خرداد 1405،  تاریخ بازنگری: 16 تیر 1405،  تاریخ پذیرش: 10 مرداد 1405 
چکیده
Transition zones between ballast and slab tracks are critical points in high-speed railways due to abrupt stiffness variations. This study investigates the optimization of speed-induced track responses in railway transition zones using geotextile reinforcement through a three-dimensional finite element dynamic-equivalent analysis. To address the inherent tensile weakness of the ballast layer, various geotextile lengths (6, 9, and 12 m) were modeled under heavy loading at speeds of 160 and 500 km/h. The numerical model was validated against experimental data of geosynthetic-stabilized soil under cyclic loading, showing a deviation of less than 10%. Results indicate that increasing train speed significantly intensifies rail deflection and impact coefficients. However, the inclusion of geotextile over cement-stabilized ballast enhances confinement and tensile strength, leading to a 60% reduction in vertical rail deformation compared to the unreinforced state. Among the tested configurations, a 12-meter geotextile length provided the optimal performance in reducing vertical rail displacement and smoothing the stiffness transition. These findings demonstrate that geotextile reinforcement is a highly effective and practical reinforcement strategy for enhancing the structural integrity and longevity of high-speed railway transition zones.
کلیدواژه‌ها
High-speed railway؛ Transition zone؛ Geotextile reinforcement؛ Finite element analysis؛ Nonlinear dynamic analysis
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