Abstract
With the continuous improvement of China's railway construction level, the requirements for the quality of train operation are also improved. For the mixed passenger and freight railway, it is necessary to transit from the simple design concept of safety to the design concept of the unity of comfort and safety. Therefore, modern numerical calculation method or simulation software method is used to replace the traditional quasi-static calculation method, and SIMPACK, ABAQUS and other related software are mainly used to analyze the operation quality and track structure dynamics of the line design scheme. The derailment coefficient, vertical acceleration and other evaluation indexes are used to evaluate the safety and comfort of the line, and the dynamic analysis of the track structure is carried out based on the vertical force. The research shows that under the condition of this line, when the passenger and freight train run at the designed speed per hour in the curve section, they can meet the specification requirements of various indexes, and there is still room for increasing speed, and the stress and strain value of the track structure can meet the specification requirements.
Highlights
With the rapid development of China's railway, the railway operation mileage is increasing, and the railway construction has become very important
G. by establishing a three-layer composite beam model and using Fourier transform[1],this paper analyzes the influence of passenger trains and freight trains on the dynamic response of track structure under the influence of track irregularity at different speeds, and points out that with the deterioration of track irregularity, the influence of freight trains on track is greater than that of passenger trains
Combined with the actual line conditions, the parameters obtained by SIMPACK post-processing system are imported into ABAQUS model for track structure analysis.The difference between this study and other studies is that SIMPACK refines the train model and considers the track irregularity, while ABAQUS refines the track structure
Summary
With the rapid development of China's railway, the railway operation mileage is increasing, and the railway construction has become very important. The data calculation and analysis of the existing line track are based on various assumptions and simplifications, and the results are theoretical values, which can not be more accurate expression for the train state under various working conditions, and can not dynamically express the value of each index. Combined with the actual line conditions, the parameters obtained by SIMPACK post-processing system are imported into ABAQUS model for track structure analysis.The difference between this study and other studies is that SIMPACK refines the train model and considers the track irregularity, while ABAQUS refines the track structure. The combination of the two considers the dynamic relationship between the train and the line, and the impact of train operation on the track structure.
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