文章编号： 1672-5328（2025）06-0054-08

金伟1，王晶2，程坦2，曾柯2
(1. 重庆市规划和自然资源局，重庆401147；2.重庆市交通规划研究院，重庆401147)

摘要： 受地形高差大、空间局促、用地紧张等因素制约，山地城市在推动道路高质量发展方面面临 特殊挑战。以典型山地城市重庆市中心城区为例，分析其受自然山水格局影响形成的多中心组团 式空间结构及相应道路系统特征，系统梳理当前路网主要问题：跨江穿山通道资源稀缺形成交通瓶 颈，干线道路结构不完善、运行效率低，次、支路网密度不足、连通性差导致微循环受阻。针对这 些问题，提出道路系统规划优化策略：推动跨江通道复合利用以提升过江交通效能；采取差异化方 法完善快速路网结构；提升次、支路网连通性以畅通微循环；加强人性化设计，完善步道网络，提 升步行品质。最后结合重庆实践，探讨了双层跨江桥梁规划建设，快速路与次、支路系统优化，全 龄友好街道空间重构等应用案例，为同类山地城市推动道路系统从规模扩张向质量提升转型、实现 高效可持续发展提供参考。

关键词： 城市道路；快速路；次、支路；步道网络；山地城市；重庆市

中图分类号： U491.1

文献标识码：A

Optimization Strategies and Practices for Road System Planning in Mountainous Cities: A Case Study of the Central Urban Area of Chongqing

JINWei1,WANG Jing2, CHENG Tan2, ZENG Ke2
(1. Chongqing Municipal Planning and Natural Resources Bureau, Chongqing 401147, China; 2. Chongqing Transport Planning Institute, Chongqing 401147, China)

Abstract： Constrained by large terrain elevation differences, limited space, and tight land supply, mountainous cities face unique challenges in advancing high-quality road system development. Using the central urban area of Chongqing, a typical mountainous city, as a case study, this paper presents an analysis of its multi-centered and cluster-based spatial structure shaped by the natural landscape of mountains and rivers, along with the corresponding characteristics of its road system. The paper systematically reviews the current road network issues, including transportation bottlenecks due to scarce cross-river and mountain-crossing corridor resources, incomplete arterial structures with low operational efficiency, and obstructed microcirculation as a result of insufficient density and poor connectivity of secondary and local road networks. To address these issues, the paper proposes the optimization strategies for road system planning, including promoting the composite use of cross- river corridors to enhance river- crossing traffic capacity, adopting differentiated approaches to improve the expressway network structure, strengthening connectivity within secondary and local road networks to improve micro-circulation, and enhancing pedestrian-oriented design through improved walkway networks and overall walking quality. Finally, drawing on practical applications in Chongqing, such as the planning and construction of double-deck cross-river bridges, the optimization of expressways and secondary/local road systems, and the redesign of all-age-friendly street spaces, the paper provides reference for similar mountainous cities seeking to shift from extensive expansion to quality-oriented improvement and achieve efficiency and sustainability in their urban road system development.

Keywords： urban roads; expressways; secondary and local roads; walkway network; mountainous cities; Chongqing