常导高速磁浮轨道梁分析研究  

Analysis and research on the track beam of normal conducting high-speed maglev

作　　者：刘新武 付善强 梁鑫 LIU Xinwu;FU Shanqiang;LIANG Xin(CRRC QINGDAO SIFANG Co.,Ltd.,Qingdao Shandong 266111,China;State Key Laboratory of High-speed Maglev Transportation Technology,Qingdao Shandong 266111,China)

机构地区：[1]中车青岛四方机车车辆股份有限公司,山东青岛266111 [2]高速磁浮运载技术全国重点实验室,山东青岛266111

出　　处：《现代城市轨道交通》2024年第9期31-36,共6页Modern Urban Transit

基　　金：国家自然科学基金(52232013);山东省重点研发计划(重大科技创新工程)(2020CXGC010202)。

摘　　要：文章结合常导高速磁浮交通系统的特性,通过比对多种轨道梁结构的特点,构建磁浮车辆载荷与轨道梁相互作用的振动模型,并通过模型分析,揭示轨道梁在不同运行条件下的振动特性。研究发现,针对不同的运行场景应优选适配的轨道梁结构以提升系统性能。文章所构建的车辆荷载-轨道梁模型可有效捕捉轨道梁振动的主要特征和振动规律,对其进一步分析可知,车辆移动速度、系统阻尼、车辆长度以及桥梁与移动荷载的基频比等因素均对轨道振动有显著影响。该研究可为未来常导高速磁浮轨道梁设计与优化提供重要的理论依据与参考。Based on the characteristics of the normal conducting high-speed maglev transportation system,the vibration model of the interaction between maglev vehicle load and track beam is established by comparing the characteristics of different track beam structures,and the vibration characteristics of track beam under different operating conditions are revealed through model analysis.The research found that different track beam structures should be optimized and adapted for different operation scenarios to improve the system performance.The vehicle load-track beam model constructed in this article could effectively capture the main characteristics and vibration principles of the vibration of track beam.Further analysis points out that factors such as vehicle moving speed,system damping,vehicle length,and the fundamental frequency ratio between bridge and moving load have certain significant effects on track vibration.This research could provide an important theoretical basis and reference for the design and optimization of normal conducting high-speed maglev track beams in the future.

关 键 词：常导高速磁浮 轨道梁 桥梁结构 振动 

分 类 号：U213.2[交通运输工程—道路与铁道工程]