中文摘要：

为更好地评价轨道几何状态的均匀性，提出了反映单元区段内轨道几何不平顺标准偏差变化趋势的新的评价指标——轨道几何状态均匀性指数（track geometry equality index，TGEI）．以津浦线轨道几何不平顺数据为例，利用轨道几何状态均匀性指数与其他轨道几何状态评价方法或指标对轨道几何状态的均匀性及维修前后轨道几何状态数据变化的敏感程度两个方面做了对比分析，验证了新方法的有效性，并以此为基础分析了新方法的特点及其适用范围．

英文摘要：

Track geometry equality index （TGEI）, a new evaluation index reflecting the standard deviation change trend of the track geometric irregularity in unit management division, is put forward to evaluate the equality of track geometric status. Based on the track geometric data from Jin- Pu railway line, the TGEI and other methods or indexes for track geometric status evaluation, an analysis is made of the track geometric equality and the sensitivity of track geometric data before and after track maintenance work, and the validity of TGEI is confirmed. Subsequently, the characteristics and application scope of TGEI are analyzed based on the above descriptions.