摘要
为提高高温超导磁浮车辆在高速运行下的品质,建立了高温超导磁浮列车-桥梁耦合振动模型,分析了桥梁刚度和车辆悬挂参数匹配对车辆系统动力学性能的影响。并通过叠加轨道不平顺谱实现桥梁预拱,分析车辆系统的动力学响应。结果表明:高温超导磁浮车辆在高速运行下,其平稳性对减振器阻尼和桥梁挠跨比的取值较敏感;桥梁挠跨比取1/7752、桥梁挠度取4.1 mm、桥梁预拱量取4 mm时能抵消车辆高速运行过程中桥梁下挠带来的线路不平顺,使车辆动力学性能达到最优。
In order to improve the quality of HTS(high-temperature superconducting)maglev vehicle under high-speed operation condition,the HTS maglev train-bridge coupling vibration model is established,and the influence of bridge stiffness and vehicle suspension parameter matching on vehicle system dynamics performance is analyzed.Bridge pre-cambering is realized through superimposing spectrum of track irregularities and vehicle system dynamic response is analyzed.The results suggest that during the high-speed operation of HTS maglev vehicle,the stability is more sensitive to the damping of the vibration reduction device and the value of bridge deflection-span ratio;when the above ratio is 1/7752,bridge deflection is 4.1 mm and bridge pre-cambering is 4 mm,the line irregularity caused by bridge deflection in vehicle high-speed operation can be eliminated and the vehicle dynamics performance is optimal.
作者
何燕
吴兴文
杨浚纲
池茂儒
HE Yan;WU Xingwen;YANG Jungang;CHI Maoru(School of Mechanical Engineering,Southwest Jiaotong University,610031,Chengdu,China;不详)
出处
《城市轨道交通研究》
北大核心
2023年第6期24-32,共9页
Urban Mass Transit
基金
中国科协青年托举工程项目(2019QNRC001)
四川省自然科学基金项目(2022NSFSC0469)。
