复杂条件下山区高速公路枢纽互通方案研究

Study on interchange scheme of expressway hubs in mountainous area with complex conditions

枢纽互通是实现高速公路之间交通转换的重要节点,其方案的选择是高速公路设计中的重要环节。结合金仁桐高速公路甫家湾枢纽互通设计实例,首先采用传统的指标分析方法对本枢纽互通方案进行比选,最终确定A,B匝道下穿川黔铁路双T型方案为推荐方案。其次采用灰色理论建立多目标比选模型,从技术条件、经济指标两方面进行多目标比选。经过比较可知灰色理论模型与传统指标法结论一致,可作为枢纽互通设计辅助方法。

Expressway hub, which has significant role to realize the traffic conversion among different lines of expressway, is an essential part in expressway design. In this paper, a multi-objective comparison between traditional index method and grey theory model in Fujiawan hub interchange design is discussed to qualify the optimal design scheme of Jinrentong expressway. The result is shows as follows: the double T-shaped scheme of A and B ramps passing through Sichuan-Guizhou railway is determined as the recommended scheme by comparing different design schemes with traditional index method. A multi-objective comparison and selection model, of which the technical conditions and economic is the main evaluation indexes, is established by using the grey correlation degree method. A consistent conclusion is made by using the traditional and new method in the Fujiawan hub interchange design, and the new grey correlation degree method can used as auxiliary method in hub interchange design of expressway.