Abstract
In this study, the train and sleeper are simulated with three-dimensional (3D) models. A railway superstructure is modeled with the beam on elastic bearings. Stresses of prestressed steels in the sleeper were determined under the effect of dynamic load by using numerical simulation technique. The purpose of this study is to predict the fatigue life of the prestressed concrete sleeper (PCS) on the urban railway in Vietnam. Simulation calculations are conducted by SIMPACK software to determine the dynamic load of the train. The train and the track structure are considered interacting in a unified. MIDAS FEA software was used to calculate the stress of prestressed steels in the PCS. The fatigue life was calculated for PCS on Ben Thanh—Suoi Tien urban railway line based on the S-N curve. Both the proposed simulation and the solution technique are 3D models, and the results are suitable with other authors. The effects of rail, rail pad, sleeper, vibration sleeper box, and vehicle speed on the dynamic response of the train are considered in detail. The numerical simulation results provide the fatigue life value for PCS is 101,502,519 cycles equal to 38.62 years. Fatigue life can be used to optimize the design and maintenance process for the urban railway.
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Dung, T.A., Van Tham, M., Truyen, T.T. (2022). Numerical Simulation in the Assessment Fatigue Life of Prestressed Concrete Sleeper on the Urban Railway. In: Ha-Minh, C., Tang, A.M., Bui, T.Q., Vu, X.H., Huynh, D.V.K. (eds) CIGOS 2021, Emerging Technologies and Applications for Green Infrastructure. Lecture Notes in Civil Engineering, vol 203. Springer, Singapore. https://doi.org/10.1007/978-981-16-7160-9_42
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DOI: https://doi.org/10.1007/978-981-16-7160-9_42
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