时速400km高速铁路线路基础设施关键技术研究综述OA
Review on key technologies of railway infrastructure for 400 km·h-1 high-speed railway
针对时速400 km高速铁路线路基础设施面临的轮轨动力冲击加剧、多源噪声问题凸显、隧道空气动力学效应激化等核心技术挑战,从关键科学问题、核心技术和设备、评价指标和控制方法等方面进行系统性梳理和综合评述,全面分析时速400 km高速铁路线路基础设施的国内外研究进展和技术发展现状.在既有时速350 km高速铁路线路基础设施成套技术体系基础上,系统构建线路基础设施多尺度空间精细化仿真模型,形成时速400 km高速铁路线路基础设施力学行为表征机理和关键设计参数体系;研发适应时速400 km高速铁路的扣件系统、道岔结构、强化基床表层的新型路基结构和新型桩板过渡段结构,以及超高预应力体系40 m简支梁和2.8 m梁高32 m简支梁等成套关键技术和核心设备;提出时速400 km高速铁路轨道几何平顺性评价指标和管理标准,并构建该速度下的高速铁路线路基础设施技术标准体系,形成线路、桥梁、隧道与振动噪声的成套关键技术.结果表明:提出的时速400 km高速铁路线路基础设施关键技术有效解决了速度提升所产生的系统动力学和气动效应等不利影响,轨道综合动力性能提升5%,减振降噪效果提升10%以上,隧道气动效应缓解效果提升15%以上,有力地支撑了我国高速铁路技术可持续发展.
Addressing the core technical challenges faced by railway infrastructure for 400 km·h-1 high-speed railways,such as intensified wheel-rail dynamic impact,prominent multi-source noise issues,and aggravated tunnel aerodynamic effects,a systematic review is conducted on key scientific problems,core technologies and equipment,evaluation indicators,and control methods.This paper comprehensively analyzes the domestic and international research progress and technical status of railway infrastructure for 400 km·h-1 high-speed railways.Building upon the existing complete technology system for 350 km·h-1 high-speed railway infrastructure,a multi-scale spatial refined simulation model for railway infrastructure was systematically developed.This led to the establishment of a mechanical behavior characterization mechanism and a key design parameter system for 400 km·h-1 high-speed railway infrastructure.A suite of key technologies and core equipment were developed,including a fastening system,a turnout structure,a novel subgrade structure with a reinforced bed surface layer,a novel structural configuration of pile-slab transition segment,as well as a 40 m simply-supported girder with an ultra-high prestressing system and a 32 m simply-supported girder with a 2.8 m girder height adapted for 400 km·h-1 operation.Evaluation indicators and management standards for track geometric regularity of 400 km·h-1 high-speed railways were proposed,and a technical standard system for the infrastructure was constructed.The results show that the proposed key technologies for 400 km·h-1 high-speed railway infrastructure effectively resolve the two types of technical challenges,namely,power matching and aerodynamic effects,resulting from speed enhancement,achieving a 5%improvement in overall track dynamic performance,over 10%improvement in vibration and noise reduction,and over 15%improvement in tunnel aerodynamic effect mitigation,thus strongly supporting the sustainable development of China's high-speed railway technology.
王同军;江成;王峰;王树国
中国铁道学会,北京 100844中国铁道科学研究院集团有限公司 铁道建筑研究所,北京 100081||中国铁道科学研究院集团有限公司 高速铁路轨道系统全国重点实验室,北京 100081中国国家铁路集团有限公司 科技和信息化部,北京 100844中国铁道科学研究院集团有限公司 铁道建筑研究所,北京 100081||中国铁道科学研究院集团有限公司 高速铁路轨道系统全国重点实验室,北京 100081
交通工程
高速铁路时速400km线路基础设施关键技术综述
High-speed railway400 km·h-1Railway infrastructureKey technologyReview
《中国铁道科学》 2026 (4)
1-25,25
国家重点研发计划项目(2022YFB2603400)
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