山区高速公路小型互通式立交方案

Small Interchange Scheme for Expressway in Mountainous Area

在山区地形复杂和交通量小的条件下,遵循安全、环保、经济、灵活和少占耕地的设计原则,在总结以住设计经验的基础上提出了适应山区高速公路特点的小型互通式立交形式,并结合工程实例,分析了如何选择适当的小型互通式立交方案。

Under the conditions of complex mountain terrain and bight traffic, following the design principle of safe, environmental, economic, flexible and less occupation of farmland. The small interchange schemes which were adapt to the characteristics of expressway in mountainous area were put forward on the basis of design experience. Combined with engineering practices, how to choose proper small interchange scheme was analyzed.