高速铁路无砟道岔精调优化技术

Research on Fine-adjusting Optimization Technology of Ballastless Turnout on High Speed Railway

无砟道岔精调是无砟轨道精调的重要内容,也是保证高速铁路高平顺性、高舒适性的前提。无砟道岔结构复杂,其精调与一般的轨道精调有很多不同之处。本文针对目前无砟道岔精调作业中的不足,从测量模式、精调流程等方面进行了优化,完善了作业流程控制机制和质量校核机制。通过对杭甬、杭长高速铁路无砟道岔动态检测数据的对比分析,评价精调优化的实施效果。结果表明,采用优化后的精调方法使道岔高低、轨距不平顺幅值分别降低了40%,50%,全线道岔轨道质量指数(TQI)降低了20.3%,精调优化效果显著。

As an important part of ballastless track fine-adjusting,ballastless turnout fine-adjusting provides the premise for high ride comfort and high security of high speed railway. Due to the complex structure of ballastless turnout,there are many differences between ballastless turnout fine-adjusting and normal track fine-adjusting.According to shortcomings of existing fine-adjusting,optimization was carried out fromthe aspects of measurement mode and fine-adjusting process,and operation process control mechanismand quality check mechanismwere improved. Through the comparative analysis of ballastless turnout dynamic test data obtained fromHangzhou-Ningbo and Hangzhou- Changsha high speed railway,the effect of fine-adjusting optimization was evaluated. Results showed that fine-adjusting method after optimization makes the turnout height and gauge irregularity amplitude be reduced by 40% and 50% respectively and the track quality index（ TQI） be reduced by 20. 3%,which indicated the optimization effect of fine-adjusting was remarkable.