西南交通大学学报2026，Vol.61Issue(3)：750-773,24.DOI:10.3969/j.issn.0258-2724.20260069
寒区无砟轨道混凝土冻融-疲劳耦合损伤机理研究综述
Review on Research of Damage Mechanism of Ballastless Track Concrete Under Coupled Freeze-Thaw and Fatigue Actions in Cold Regions
摘要
Abstract
With the extension of high-speed railways into cold and high-altitude regions,ballastless track concrete structures face severe durability challenges under the long-term coupling action of freeze-thaw cycles and high-frequency train loads.The damage evolution mechanism and research progress of ballastless track concrete under freeze-thaw cycle,fatigue load,and their coupling action were systematically reviewed.Firstly,the cyclic action characteristic of the freeze-thaw cycle was elaborated,and the cross-scale experimental research results of ballastless track concrete were summarized to reveal the damage development law of ballastless track concrete under the freeze-thaw cycle.Furthermore,the statistical characteristics and transfer law of train load were explored.The mechanical properties of the ballastless track concrete structure and the interlayer interface under train load were discussed from the levels of material specimen and full-scale structure tests,and the theoretical analysis framework of ballastless track introducing concrete damage mechanics was generalized.Finally,the synergistic damage effect of freeze-thaw and fatigue coupling action was generalized,and it was pointed out that the coupling action significantly exacerbated the micro-pore development and macro-mechanical property degradation of concrete.The research status and latest progress in this field were reviewed and evaluated,and the existing technical problems in current research and the development trend of future research were clarified to provide theoretical support for the safe operation and maintenance and long-term design of ballastless tracks in cold regions.关键词
无砟轨道/混凝土/冻融循环/疲劳荷载/损伤演化Key words
ballastless track/concrete/freeze-thaw cycle/fatigue load/damage evolution分类
交通工程引用本文复制引用
任娟娟,刘文高,陈爽,徐欢,邓世杰,叶文龙,瞿福林..寒区无砟轨道混凝土冻融-疲劳耦合损伤机理研究综述[J].西南交通大学学报,2026,61(3):750-773,24.基金项目
国家自然科学基金项目(52425213) （52425213）
