摘要
列车运营速度的提升给高速铁路线路基础设施带来轮轨动力作用加剧、振动噪声增大、空气动力学效应增强等技术挑战。围绕400km/h高速铁路线路基础设施关键技术问题,系统研究更高速度条件下的线路基础设施力学行为、多源噪声形成机理与影响机制、隧道压缩波传播机制与洞口微气压波特性,形成400km/h高速铁路钢轨、扣件、道岔、无砟轨道等性能提升与轨道平顺性控制技术,基于高速行车性能的桥梁、路基与过渡段优化技术,线路振动噪声控制技术,隧道洞口微气压波缓解技术,并结合相关线路开展成果示范应用验证,构建我国400km/h高速铁路线路基础设施技术体系,为交通强国战略提供支撑。
The increase in train operating speed presents technical challenges for high speed railway line infrastructure,including intensified wheel-rail dynamic interactions,elevated vibration and noise levels,and enhanced aerodynamic effects.Focusing on the key technical challenges of 400km/h high speed railway line infrastructure,it is imperative to systematically study the mechanical behavior of line infrastructure under higher speed conditions,the formation and influence mechanism of multi-source noise,as well as the propagation mechanism of tunnel compression waves and the characteristics of micro-pressure waves at tunnel portals.Through theoretical study on performance improvement and track regularity control technologies for 400km/h high speed railway rails,fastenings,turnouts,and ballastless tracks,optimization technologies for subgrades,bridges,and transition sections based on high-speed train operation performance,vibration and noise control technologies for lines under 400km/h speed conditions,and micro-pressure wave control criteria and mitigation measures at tunnel portals,and in combination with the demonstration and application verification of relevant achievements,a technical system for China’s 400km/h high speed railway line infrastructure is constructed,providing support for the strategy of building China into a country with strong transportation network.
作者
王同军
江成
WANG Tongjun;JIANG Cheng(China Railway Society,Beijing 100044,China;China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)
出处
《中国铁路》
北大核心
2025年第6期1-9,共9页
China Railway
