Study On Optimal Layout Of High-Speed Railway Throat Based On Three-Minute Tracking Interval

The rapid development of China's high-speed railway, provides a more efficient and convenient way of travel to the general public, which is changing the concept of travel.More and more people tend to choose to take high-speed rail travel, which high-speed railway construction and operation of the more challenges. Today, shorter train intervals become a consistent pursuit of high-speed railways, and only a shorter interval of trains can meet more trains on the chart in order to meet the growing passenger demand. As the focus of high-speed railway passenger transport point line relationship, the capacity of high-speed rail passenger terminal is an important factor to shorten the interval of train interval, and the ability of high iron passenger station throat area is an important factor restricting passenger capacity, how to arrange throat area To improve passenger capacity in order to shorten the interval between the train? In this paper, the problem of the optimal layout of the throat area is discussed from the point of view of the length of the throat zone from the interval of high-speed railway trains.1.This paper introduces the basic concept of the throat throat area, the basic composition of the throat area, analyzes the limiting factors of the capacity of the throat area,introduces the difference between the high-speed railway passing capacity calculation and the generalized railway, and sums up several throat area passing capacity The calculation method. Finally, six influencing factors should be considered in the throat area of high speed railway.2.This paper analyzes the calculation method of the train tracing interval time, and also discusses the calculation method of the train interval interval of the high-speed railway, and the calculation method of the train interval interval of the high-speed railway is the same,but the calculation method is completely different. The method of calculating the interval of the station mainly includes the same time interval between the same direction and the transit time, the same time the train does not arrive at the same time and the interval between the arrival time and the opposite direction. The opposite direction of the train is different from the time interval To the interval, and finally analyzed the interval between the same direction of the train station. Through the analysis, it was found that the interval between the train and the length of the station throat area was affected.3. According to the three-minute interval goal pursued by the high-speed railway in recent years, the upper limit of the throat length satisfying the interval time is deduced, and the upper limit of the throat length under various speed grades is calculated, and the model design Provided the constraints, and introduced the high iron throat dense to the conditions under the conditions to be met.4.According to the above bedding, the optimal layout model of throat area is designed,and the model of the bifurcation is designed. At the same time, the throat length constraint model based on train interval is designed according to the calculation and the deduction of Chapter. Finally, a brief analysis is made using an example.This paper discusses the calculation method of high-speed railway train interval, and defines the throat area of high-speed rail passenger station composed of two parts-throat approach area and throat harness area,through the throat length limit conditions,turnout connection and safety constraints and other factors, The throat area optimization model was designed to optimize the layout of the throat area.