Research Of The Reasonable Guideway Structure Style Of High-Speed Magnetic Levitation Railway

Presently, the feasibility studies of long high-speed magnetic levitation railway lines are on the point of start-up in our country. The construction of the long magnetic levitation railway lines cannot depend on the introduction of the entirely magnetic levitation technology. From the situation of our country economy, we must tackle the key problem of the innovative technology on the base of assimilating the foreign magnetic levitation technology. It has deep signification of theory and practice to build rational and economic high-speed magnetic levitation railway system in our country.In this paper, the research is based on the constructive need of the magnetic levitation railway test line in Shanghai. Using large-scale current finite element software, the author comparatively analyzes several structure types of bridges fitted for the high-speed magnetic levitation railway lines. The main purpose is trying hard to provide reference for the decision-making of the long magnetic levitation railway lines. The detailed contents are as follows.Through comparatively analyzing design demands in the specifications of countries in the world for the high-speed railway bridges, studying all sorts of structure types of the guideway girder adopted in some country, and summarizing the design outlines of the magnetic levitation guideway girder, the author bring forward a new-style structure of guideway girder: composite steel-concrete structure.Under the same controlled parameters conditions, the paper study out five possible projects for the magnetic levitation guideway girder. Using large-scale current finite element software ALGOR, the author builds 3D finite element models for the five project, and analyzes flexural, temperature deform and natural frequencies of the five guideway girder projects. Through summarizing the analyzed results, select out the best project. Study the reasonable constructed method for the best project, and check the stress of it. Finally, simply introduce the engineering cost evaluation of the magnetic levitation railway lines.The above-analyzed results indicate that the composite steel-concrete structure is a better style for the magnetic levitation guideway girder.