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复杂地形条件下的互通式立交越来越趋向于灵活选择各类变异型方案。随着山区高速公路逐步连接成网,已建成的变异型互通需改造或续建成为复合型互通。按一次设计、多期建设的模式十分符合山区高速公路的互通设计。本文分析一处典型的复合型互通的设计,总结了复杂地形条件下的互通式立交一次设计、分期建设的设计要点和经验教训。
Interchanges under complex terrain conditions tend to be more flexible in choosing various variants. With the gradual connection of the mountainous expressway into a network, the interoperable mutated exchanges need to be reconstructed or renewed into composite interoperability. According to a design, multi-phase construction model is very consistent with the mountain highway interchange design. This paper analyzes the design of a typical composite interoperability, summarizes the design points and experiences and lessons of the first design and the phased construction of the interoperable interchange under the complex terrain conditions.