高速铁路散体道床劣化机理研究

项目名称： 高速铁路散体道床劣化机理研究

项目编号： No.U1234211

项目类型： 联合基金项目

立项/批准年度： 2013

项目学科： 建筑科学

项目作者： 高亮

作者单位： 北京交通大学

项目金额： 270万元

中文摘要： 在高速铁路运营条件下，有砟轨道散体道床的劣化会直接影响列车的运营安全。因此，进行高速铁路散体道床劣化机理的研究具有重要的理论意义和应用前景。课题针对高速铁路道砟颗粒及其力学状态的模拟、高速运营条件下散体道床与轨排和下部基础多层结构体系的相互作用、复杂环境条件下高速铁路散体道床劣化演变规律三个关键科学问题，主要从散体道床与结构的相互作用、有砟道床状态劣化机理、道砟与大型养路机械的相互作用机理及参数影响规律、高速铁路有砟道床力学状态评估及预测、延缓道床劣化措施的机理及应用等方面进行深入、系统的研究。拟通过系统的理论及试验研究揭示高速铁路散体道床劣化演变机理，形成一整套具有我国自主知识产权的集研究、分析、应用为一体的高速铁路散体道床多维理论体系，为我国高速铁路有砟轨道结构的设计、施工、运营安全与养护维修提供理论基础和科学指导。

中文关键词： 高速铁路；散体道床；劣化机理；状态评估；延缓措施

英文摘要： During the operation of high-speed railway, the deterioration of ballast bed endangers the operation safety directly. Therefore, a research on the deterioration mechanism of ballast bed in high-speed railway is of important theoretical significance and to have a wide application prospects. The three scientific questions – simulation of ballast particles and their mechanical state in high-speed railway, interaction between ballast bed and track panel as well as between ballast bed and lower foundation of multilayer structure system, and law of deterioration evolution of ballast bed under the conditions of complex environment in high-speed railway – on which the subject is focusing, mainly include the following research which will be studied in-depth and systematically: interaction between ballast bed and structures, deterioration mechanism of ballast bed status, mechanism of interaction between ballast and big maintenance machineries and influence of related parameters, evaluation and prediction of mechanical status of ballast bed in high-speed railway, mechanism and application on mitigating the degradation of ballast bed and so on. The subject, intended to be carried out through theoretical research and experimental study, is to reveal the evolution mechanism of deterioration of ballast bed in high-speed railwa

英文关键词： High-speed railway；Ballast Bed；Deterioration Mechanism；State Evaluation；Mitigating Methods