Deformation Analysis Of Double-span Maglev Guideway Under Temperature Loads And Influence On Vibration

In the maglev transport system, requirement of guideway regularity and vibration performance is very strict. Based on the current specifications, the vertical and horizontal deflection of double-span guideway under temperature loads should be less than 1/6500 and 1/6960 of the beam length. In this paper, the deformation and vibration performance of double-span maglev guideway under temperature loads is analyzed.The solid model of double-span guideway under limit temperature loads is set up by ANSYS. Considering the influence of atmospheric temperature, the results show that the deflection of guideway under limit temperature loads increase with increasing atmospheric temperature and the section height of the beam. But the deflection does not meet current rules.For researching the dynamic performance of vehicle and guideway, the vehicle-guideway coupled vibration model is established and the computing program is written by FORTRAN. The results show that the acceleration and displacement of guideway increases because of the temperature excitation. The vertical dynamical magnification factor increases with increasing atmospheric temperature, vehicle velocity and section height of the beam.