Abstract:

he advantages and disadvantages are analysed on the basis of the grade crossing vertical design. Based on these design methods and computer aided design(CAD)technology,grid and contour line construction drawings are given by auto draft.Design results could be checked by the threedimensional Surface model based on the grids data and the threedimensional panoramic dynamic perspective picture.Finally, as certification, some road grade crossing engineering cases which are designed by these methods and CAD technology are presented.

Key words: grade crossing; vertical design; CAD technology