Abstract: Taking the switch transformation project caused by the rail structure optimization of Yantai station as an example, combining with the relevant problems encountered in the signal transition project, this paper studies and analyzes the special treatment scheme for the temporary transition of the existing interlocking switches removal and the new switches insertion in the transition project, and puts forward a scientific and reasonable transition scheme. The practice proves that the scheme is safe and reliable, simple to use, saves project investment and reduces the interference to the existing line transportation, and provides reference for similar projects in the future.

Key words: switch transformation, signal transition, switch indication

摘要： 站轨道结构优化引起的道岔改造工程为例,结合信号过渡工程中遇到的相关问题,对过渡工程中既有联锁道岔拆除、插入新道岔临时过渡的特殊处理方案进行研究分析,提出科学合理的过渡方案。实践证明,此方案安全可靠、使用简单、节省工程投资且减少对既有线运输的干扰，并对今后类似项目提供借鉴。

关键词: 道岔改造, 信号过渡, 道岔表示