城镇化郊区公路升级改造设计浅析

Brief Analysis on Upgrading and Reconstruction Design of Suburban Highways in Process of Urbanization: A Case Study of Dingsi Road

摘要:

随着我国经济高速发展，城市范围持续向外扩张，城镇化成为普遍现象，其中郊区城镇化进程对早期建设的公路产生显著影响。此类公路普遍面临路口频繁接入、非机动车与行人交通参与量大等问题，通行能力显著下降，原有功能与性质甚至发生改变，难以满足郊区城镇化建设下的出行需求，公路升级改造由此成为解决郊区出行困境的关键手段。以昌平区定泗路改造工程为对象，聚焦现状用地局促的核心约束条件，开展公路升级改造相关的设计过程梳理与方案研究，相关成果可为后续同类郊区公路提级改造设计工作提供有效参考。

Abstract:

With the rapid economic development of China, the urban areas continue to expand outward and the urbanization becomes a prevailing trend, in which the process of suburban urbanization has a significant impact on the early-built highways. Such highways generally face problems such as frequent intersections and high traffic participation of non-motorized vehicles and pedestrians, resulting in a substantial decline in traffic capacity. Their original functions and attributes have even been altered, making it difficult to meet the travel demands generated by suburban urbanization. The highway upgrading and reconstruction have thus become the key means to solve the travel predicament in the suburbs. Taking the Changping District Dingsi Road Reconstruction Project as an example, and focusing on the core constraints of the current restricted land use, the design process is sorted out and the scheme research is conducted relatively for the upgrading and reconstruction of highways. The relevant outcomes can provide the effective references for the upgrading and reconstruction design of similar suburban highways in the future.