高速磁浮桥上梁轨道系统方案研究

针对高速磁浮交通新项目前期选线中主要采用的高架线路方案开展了相关工程化应用研究,并介绍了针对高速磁浮高架线路轨道系统方案的优化研究进展。研究立足于优化磁浮系统布置、提高安全疏散效率、节约用地、提高环境保护水平等原则,明确了桥上梁轨道系统方案及相关系统设备布置,提出了结合桥上梁形式的安全疏散逃生方案。通过动模型试验与有限元仿真分析方法,研究了磁浮列车通过桥上梁结构时的空气动力学性能,表明磁浮列车的高速通过空气动力学性能符合要求;结合上海磁浮示范线进行了桥上梁方案的在线模拟展示和降噪性能测试,结果表明,结合声屏障,可将磁浮列车高速气动噪声降低最高13 dB(A)。研究结论在相关工程方案中得到了应用,可为类似高速交通系统工程提供参考。

Research on High Speed Maglev Transrapid Girder-on-Bridge System

The construction application study on the elevated structure proposed in the new high speed maglev transportation line and the advances on the high speed maglev transrapid girder-on-bridge system are introduced in this paper.New practical elevated guideway system is designed based on the principles ol optimization of the maglev system arrangement,high escape efficiency,economic use of land and better environment protection,etc.One new guideway system type is provided together with the system arrangement,and one new escape system is provided which can be used in the girder on bridge maglev system.With model test and simulation analysis,the aerodynamic effect of this structure when maglev trains passing was examined,and the test results show that the aerodynamic effect when maglev vehicle passing by is acceptable.This girder on bridge system was presented on the Shanghai maglev demonstration line,and the noise reduction effect was tested. Test results show that noise can be reduced to 13 dB(A) with the barrier screen fixed.Conclusions introduced in this paper has been considered in the new project,which can also be referenced in other similar high speed transportation projects.