中低速磁浮承轨梁节间限位传力构造仿真分析  

Simulation Analysis of the Inter-Node Limit Force Transmission Structure of the Middle and Low Speed Maglev Rail Beam

作　　者：雷鹏飞 LEI Pengfei(China Railway Maglev Transportation Investment&Construction Co.Ltd.,Wuhan Hubei 430060,China)

机构地区：[1]中铁磁浮交通投资建设有限公司,湖北武汉430060

出　　处：《铁道建筑技术》2022年第11期100-103,共4页Railway Construction Technology

基　　金：中国铁建股份有限公司科技重大专项(2018-A01)。

摘　　要：对中低速磁浮低置结构地段承轨梁节间设置限位传力构造和不设置限位传力构造两种工况分别进行了仿真分析计算,对限位传力构造的作用效果进行了研究,并通过模型试验进行了验证。本次研究结论如下:(1)限位传力构造可以有效减小承轨梁节间的错台变形,与不设置限位传力构造相比,错台变形可减小90%以上;(2)在列车竖向荷载作用下,设置限位传力构造时的最大错台变形仅为0.0033 m,几乎不产生错台变形,说明该构造控制错台变形效果优良;(3)限位传力构造具有较好的力的传递作用,与不设置限位传力构造相比,加载梁的梁底最大竖向应力减小了8.48%,平均竖向应力减小了15%,非加载梁梁底的最大竖向应力由0增加至8.28 kPa,平均竖向应力由0增加至3.17 kPa。This paper shows the study of simulation analysis and calculation for the two working conditions of the middle and low speed maglev low-position structure section with the limit force transmission structure and the non-limit force transmission structure between the rail beams,as well as the effect of the limit force transmission structure.It is verified by a model experiment.The research conclusions are as follows:(1)the limit force transmission structure can effectively reduce the dislocation and deformation between the rail beam sections.Compared with the non-limiting force transmission structure,the dislocation and deformation can be reduced by more than 90%;(2)under the vertical load of the train,the maximum dislocation and deformation when setting the limit force transmission structure is only 0.0033 m,which is almost no dislocation and deformation,indicating that this structure has an excellent effect on controlling dislocation and deformation;(3)the limit force transmission structure has a better force transmission effect.Compared with the non-limiting force transmission structure,the maximum vertical stress of the load-bearing beam bottom is reduced by 8.48%,the average vertical stress is reduced by 15%,and the maximum vertical stress of the non-load-bearing beam should be increased from 0 to 8.28 kPa,and the average vertical stress is increased from 0 to 3.17 kPa.

关 键 词：中低速磁浮 低置结构 承轨梁 限位板 限位传力构造 传力杆 仿真分析 

分 类 号：U237[交通运输工程—道路与铁道工程]