成都市温江区花都大道与南熏大道交叉口改造方案研究

Study on Reconstruction Scheme for Intersection of Huadu Avenue and Nanxun Avenue in Wenjiang District of Chengdu

摘要:

以成都市温江区花都大道与南熏大道交叉口立交化改造为工程实例，研究人口密集区现状交叉口的交通缓堵设计方案。在明确现状道路、路网规划及工程地质情况的基础上，对项目进行了交通分析和影响评价，据此提出了2个总体方案，并进行了比选。从平纵横设计、交通组织设计、主体框架与围护结构设计等方面，对推荐方案（下穿隧道方案）进行了详细研究。采用维护结构与主体结构一体化结构组合，以延长维护结构生命周期，节省工程造价，并为同类地下结构工程提供借鉴。

Abstract:

Taking the interchange reconstruction project of Huadu Avenue - Nanxun Avenue Intersection in Wenjiang Distric of Chengdu as an example, the design scheme of relieving the traffic congestion at the existing intersections in the densely populated areas is studied. On the basis of clarifying the present road situation, the road network planning and the engineering geological conditions, the traffic analysis and impact assessment are carried out for the project. In view of the above, two overall schemes are proposed, compared and selected. The recommended scheme (underpass tunnel scheme) is studied in detail from the aspects of the vertical and horizontal design, the traffic organization design, and the design of main frame and enclosure structure. The integrated structural combination of maintenance structure and main structure is adopted to lengthen the life cycle of maintenance structure and to save the engineering cost, which can be referred for the similar underground structural projects.