Electromagnetic shielding performance of steel truss bridge in multi-track electrified railway

This paper mainly focuses on the electromagnetic shielding performance of the steel truss bridge in electrified railway. The background of the study is based on the AC and DC railway systems which are running in parallel in the project of Dashengguan Bridge. The multi-conductors model including the steel truss bridge as well as the of the conductors of traction supply systems are constructed by the Q3D software. After that, the electrostatic voltage, induction electromotive force with and without the influence of steel truss bridge has been computed. By comparing the result under two distinct conditions, the electromagnetic shielding performance of the steel truss bridge can be evaluated.