关键词: 高速铁路, 防护区段, a值, 出站应答器组, 长大股道

Abstract: For high-speed railway lines with different speeds, through the analysis of platform size and the setting of walking ladder, this paper determines the calculation method and the minimum value of the distance between insulation joint at the protection section and platform end. At the same time,  combined with the current railway specifications and technical standards, the paper analyzes and compares the design methods among the protection section, outbound signal and outbound transponder group of the typical station and the long track station, so as to obtain a design scheme of the protection section at the station under different conditions, which provides a reference for similar engineering design.

Key words: high speed railway, protection section, value “a”, departure balise group, long track