| 超高速磁浮车辆-简支梁桥的耦合动力响应 |
| |
| 引用本文： | 汪斌,张焱焜,于和路,张国庆,李永乐.超高速磁浮车辆-简支梁桥的耦合动力响应[J].铁道建筑,2019(8):5-10. |
| |
| 作者姓名： | 汪斌 张焱焜 于和路 张国庆 李永乐 |
| |
| 作者单位： | 西南交通大学土木工程学院 |
| |
| 基金项目： | 国家自然科学基金(51878579);中国工程院咨询项目(2018-ZD-16) |
| |
| 摘 要： | 以真空管道交通为代表的新型交通系统以磁悬浮为主要形式,其运行速度可超过1 000 km/h。本文以磁浮列车超高速通过简支梁桥为研究对象,建立磁浮车辆-桥梁耦合系统动力分析模型,采用数值分析方法计算超高速磁浮车辆通过简支梁桥时耦合系统的动力响应,并分析桥梁跨数、结构阻尼的影响。研究结果表明:随着车速提高,系统动力响应整体增加并表现出越来越明显的时间滞后现象;超高速运行条件下车辆舒适性与安全性满足要求,而桥梁竖向振动加速度过大导致其成为行车安全的控制性指标。
|
| 关 键 词： | 超高速磁浮 简支梁 数值分析 车桥耦合 动力响应 |
Coupling Dynamic Response of Ultra-high Speed Magnetic Levitation Vehicle and Simply-supported Girder Bridge |
| |
| WANG Bin,ZHANG Yankun,YU Helu,ZHANG Guoqing,LI Yongle.Coupling Dynamic Response of Ultra-high Speed Magnetic Levitation Vehicle and Simply-supported Girder Bridge[J].Railway Engineering,2019(8):5-10. |
| |
| Authors: | WANG Bin ZHANG Yankun YU Helu ZHANG Guoqing LI Yongle |
| |
| Institution: | (School of Civil Engineering,Southwest Jiaotong University,Chengdu Sichuan 610031,China) |
| |
| Abstract: | New transportation system with vacuum pipe takes magnetic levitation as the main way.Its speed has an ability exceeding 1 000 km/h.In this paper,the magnetic levitation train passing simply-supported bridge with ultra-high speed was taken as the background.The dynamic analysis model of coupling magnetic levitation vehicle-bridge was formed.The corresponding dynamic responses were analyzed with numerical analysis method,and the inf luences of the span number and structural damping were discussed.The results show that the dynamic responses increase in general and the time lag phenomenon becomes more obvious with the increase of speed.The comfort and safety of the vehicle can be fulf illed .However,the vertical vibration acceleration of the bridge is too great and may become the key control factor for safety. |
| |
| Keywords: | Ultra-high speed magnetic levitation Simply-supported girder Numerical analysis Vehicle-bridge coupling Dynamic response |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
