互通式立交匝道横断面和连接部CAD设计方法

CAD Method for Cross Section of Interchange Ramp and Joint Area

通过对互通式立交匝道横断面设计特点与设计方法的分析和研究 ,提出了路幅组件模板模型和边坡组边模型及其数据结构。将连接部划分为 5个计算区域 ,建立了连接部曲面模型并提供了计算公式。结果表明 ,这些模板及公式可提高立交

By the analysis and study on the character and design method for cross section of interchange ramp, the component template models and the group sides models for roadway and side slope are presented. The data structure for these models is also developed. By dividing the joint area into 5 parts, a curve face model and its formula for the joint area design are established. The results indicate that these models and formulas can improve the flexibility of interchange CAD and raise efficiency for interchange design.