Selection of Key Technical Parameters for Expressway Interchange Alignment Design
Analyze the impact of numerical parameters of horizontal curve radius on the safety of the entire interchange from the per-spectives of horizontal alignment,mainline vertical section linearity,speed changing lanes,and horizontal and vertical combinations within the scope of interchanges.Selecting the Guizhou Expressway Shuitang Interchange Linear Design Project as a case study,analyze the calculation and selection of horizontal curve radius parameters for the interchange linear design project.Through practical case anal-ysis,it is known that when calculating and selecting the technical parameters of the horizontal curve radius of interchanges,it is neces-sary to consider safety requirements in conjunction with the latest national standards and regulations.