成都市“第二绕城高速-成温邛高速枢纽立交”选型研究

Discussion on Lectotype of Flyover for Terminal of the Chengdu Second Ring Expressway-Chengdu-Wenzhou-Qiongxia Expressway

研究目的:二绕—成温邛枢纽立交是成都市第二绕城高速公路西段的重要节点之一。本文结合该立交实例的控制因素,采用统计、类比、优缺点评价等方法进行综合技术比较;分析该立交在不同交叉位置的合理线路方案,以及交叉点的不同立交型式方案,为其他相似工程立交选型思路提供参考。研究结论:立交方案的选择,即是对立交的不同交叉位置以及交叉点的立交选型进行分析研究,根据工程、技术、经济、环境等各方面因素的全面均衡选择,实现交通流的快速转换和运输通畅,降低工程投资及运营维护费用,达到综合效益的最大化。

Research purposes： The overpass of the Chengdu second ring expressway-Chengdu-Wenzhou-Qiongxia Expressway is one of the most important nodes in the western section of the Chengdu second ring expressway.Combined with the control factors of the flyover,this paper comprehensively and technologically compares the advantages and disadvantages of the overpass by using statistics method,and analyzes the alignment and the different types of the overpass in different cross locations for offering the references the similar flyover.Research conclusions：The flyover program should be chosen on the basis of the analyse and reserch on the lectotype of overpass in the different cross locations and comprehensive consideration of construction,technology,economics and environment to achieve the goals of rapid and smooth transportation,lowering the maintenance and operation costs and maximizing overall benefits.