高速铁路轨道－路基服役性能演变与状态控制技术研究

项目名称： 高速铁路轨道－路基服役性能演变与状态控制技术研究

项目编号： No.51478397

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 建筑科学

项目作者： 宋小林

作者单位： 西南交通大学

项目金额： 80万元

中文摘要： 针对现代高速铁路结构特征，围绕高速铁路轨道－路基性能演变与控制这一核心问题，采用理论分析、数值模拟与试验研究相结合的方法，建立可以反映轨道结构部件伤损和材料性能劣化的高速列车－轨道－路基结构动态相互作用模型及分析求解方法，揭示高速列车运行荷载在轨道－路基结构中的传递规律及其对路基的动力作用特性，阐明高速铁路路基的动力劣化规律和状态演变孕育机理，探明高速铁路轨道性能演变与路基服役性能的相互影响机制，提出高速铁路轨道－路基服役性能演变的预测方法，给出不同演变状态下的轨道和路基状态控制建议准则，为不同速度等级的高速铁路基础结构维修养护与安全管理提供科学依据和理论支撑。

中文关键词： 高速铁路；路基；服役性能；演变；状态控制

英文摘要： This project deals with the problem of the performance evolutions and its control technologies of track and subgrade in high-speed railway. Interactive mechanism and coupling relationship of track performance evolutions and subgrades service performance will be investigated using the method of combining the theoretical analysis, numerical computation with experiments. Dynamic model of the overall train-track-subgrade interactive system and its analytical method will be established. In the model the performance evolutions of the track will be included. The characteristic of high-speed vehicle loads transmitting into railway infrastructure will be studied. The state deterioration mechanism and performance evolutions law of the high-speed railway subgrade will be investigated. The interaction influence mechanisms between the track performance evolutions and the service performance of subgrades in high-speed railway will be analyzed. The prediction method and control standards of high-speed railway infrastructure performance evolutions will be studied so as to provide scientific basis and theoretical foundation for the maintenance and safety management of the modern high-speed railway track and subgrade with different operation speeds.

英文关键词： High-speed railway;Subgrade;Service performance;Evolutions;State control