三肢环形互通式立交在山区高速公路中的应用

Application of Three Limbs Annular Interchange in Expressway of Mountainous Area

通过对山区高速公路互通式立交选型实例的分析,提出三肢环形互通式立交的优点和适用范围。结合交通量、地形地貌等影响因素,指出三肢环形互通式立交在技术指标、用地、工程规模、对自然环境以及人文环境的破坏和影响等方面具有一定的特点,在山区高速公路的适当地段可以将三肢环形互通式立交作为服务型立交的一种重要备选方案。

By the analysis of interchanges in expressway of mountainous area, the advantages and application scope of three limbs annular interchange were proposed. Combined with the traffic volume, land using and some other factors, it pointed out that there were some characteristics of three limbs annular interchange in the technical indexes, the land using, the project scale, the destruction and influence to natural environment and humane environment. In appropriate location of the mountainous area expressway, the three limbs annular interchange can be chosed as an important type of service interchange.