高速铁路无砟轨道线路质量评价指标研究

Research on Track Quality Evaluation Index of High Speed Railway Ballastless Track

为有效开展线路维修管理,需对线路质量进行状态评价和分级。在分析现有线路质量评价方法的基础上,融合线路几何状态检查、结构状态检查的多源检测数据,建立了涵盖轨道几何状态和结构状态的高速铁路无砟轨道线路质量评价指标及相关计算公式,运用层次分析法和变权模型确定了各个参数的初始权重,并在沪宁高速铁路上进行了应用。结果表明,线路质量评价指标能够准确评价线路质量,反映线路的薄弱环节,并可依据评价结果分析线路薄弱环节的病害,指导线路精确维修作业。

In order to effectively carry out track maintenance and repair management, track quality e- valuation and grading is needed. Based on the analysis of existing track quality evaluation methods, combining track geometry and structure inspection data, track quality evaluation indexes and related cal- culation formula are established of high-speed railway hallastless track, reflecting the track geometry condition and structure condition. The index initial weights are determined using analytic hierarchy process and variable weight model. Track quality evaluation indexes are applied in Shanghai-Nanjing high-speed railway, and the result shows that track quality evaluation indexes can accurately evaluate the track quality and reflect track weaknesses. Further disease analysis of track weakness can be made on the basis of the evaluation results to guide track precise repairing operation.