Analysis On The Affect Of The Passengers’ Comfort In The Changing Of The Speed-up Railway Transition Curves

In this paper, we combined with the concrete issue in the existing railway speed-up of Longhai, and study on the suitability between the speed-up train in the existing railway with small radius curve and the linear of the plane, fa?ade in the transition curves, in order to find out the key problem that limits the train speed-rasing, and find the optimal solution, the main research work is carried out in the following aspects:1.Through analyzing the model of the trainsition curve equation, summarized the transition curve which are widely used at home and abroad, analysis of the linear features and adaptability and train operation, analysed the liner features and the adaptability of the train operation. Secondly, from the perspective of the length of transition curve and the layout of the superelevation, expounded the value and limitations. At the same time choosing the higher-degree transition curve and the half wave sine curve as the plane design, which is the superelevation slope of the straight line or the curve line as the elevation line, in-depth study of the relationship between the operation characteristics of all kinds of combination with the train.2.According to the stress state of the train when it is through the curve section and dynamics principle of the train, deduced the calculation formula of the carbody lateral acceleration when the vehicles pass through the curve and the lateral change of the carbody acceleration which is under the two conditions of the speed change taken into account or not.Select the speed bottleneck of radius which is the 600 m or 800 m as the research object, considering the joint operation of the passenger trains and the freight trains, with unbalanced lateral acceleration, unbalanced the lateral change of the carbody acceleration and the abrasion index of Vogel as the main technical indicators, under the different speed, the different length of transition curve, flat vertical line conditions, analyzing the variation law of the lateral acceleration, the lateral change of the carbody acceleration, the abrasion index of Vogel, come up with the the optimal parameters of transition curve configuration under different conditions.3.The study puts forward the Cable accelerated solution of practical problems, especially for small radius curve group of locations, and Select a certain interval line between Baoji and Lanzhou combined with The numerical simulation analysis and engineering examples, by changing the easement curve length and high layout method to optimize the linear condition of small radius curve section. Simulation driving fastest solution can satisfy the passenger comfort conditions, and compare to the existing driving scheme, analysis of the effect of the improved scheme.The study can reveal the key problem of the Small radius curve location trains, and give a reference solution for the Complex disasters area of high-speed trains.