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互通式立交的形式很多,影响其方案选择的因素也很多,诸如自然地形、经济、相交道路等级、通行能力、收费要求等。对于同一个交叉口,合适的形式往往也不只一个,即使同一种形式,采用不同的布置方式也会产生不同的效果。这就要求在立交设计前期,不仅要选择合适的立交形式,而且应有合理的布置方案。文章浅析了互通立交的分类和形式适用情况,总结了互通式立交选型时遵循的原则及互通立交形式选择的步骤与内容,并就高速公路互通立交的合理选型进行了研究。
There are many forms of interchange, there are many factors that affect the choice of programs, such as the natural topography, economy, level of road intersection, capacity, fee requirements. For the same intersection, the appropriate form is often more than one, even if the same form, using different arrangements will have different effects. This requires that in the early stage of interchange design, not only to select the appropriate form of overpass, but also should have a reasonable layout. The article analyzes the classification and form application of interchanges, summarizes the principles to be followed in the selection of interchanges and the steps and contents of the choice of interchanges, and studies the reasonable selection of expressway interchanges.