A Study on the Targeted Speed for HSR Based on the Fuzzy Comprehensive Evaluation Approach

Abstract

Being the core index for the HSR train operation technology, the targeted High- Speed Railway (HSR) speed value characterizes the very importance for the design parameters of high-speed railway system. Taking such key characteristic factors that affect the targeted speed most as the running security, the operation time and the energy consumption into consideration, an AHP model has been established in this paper, with the targeted speed value as its target layer, and the economic efficiency, the social efficiency and the marketing efficiency as its criterion layer. The appropriate weighing value for each factor are determined hereby as well. Through the careful analysis of many cases, some valuable data for the operation time and the energy consumption of the CRH3 train are obtained by means of the simulation under different targeted speed value. The final evaluation of the data are processed by using the fuzzy comprehensive evaluation method. As is shown in the analysis results, the most economically reasonable targeted speed value for the high-speed railway should be 300km/hin China at present.