张会 刘正

摘 要：随着城市道路的路面病害以及道路交通拥堵的加剧，对城市旧路升级改造是提升道路环境、缓解交通拥堵的有效措施。城市旧路周边现有建设条件复杂并有很多局限性，对城市旧路升级改造后的交通组织有更高的要求。文章通过分析旧路升级改造道路的特点，提出城市旧路升级改造道路的交通组织优化方案，以实现升级改造后的道路交通与城市路网的更好的衔接。并依托西平县旧路改造实例，综合运用各种交通组织方案，并对交通组织优化前后的交通流量、交叉口的延误进行对比分析，结果表明交通组织优化方案效果显著。

关键词：城市旧路；升级改造；交通组织；优化

中图分类号：F282；U491文献标志码：ADOI：10.13714/j.cnki.1002-3100.2024.10.025

Abstract： With the aggravation of urban road pavement diseases and road traffic congestion， upgrading and reconstruction of old urban roads is an effective measure to improve the road environment and alleviate traffic congestion. The existing construction conditions around the old urban roads are complex and have many limitations， which has higher requirements for the traffic organization after the upgrading of the old urban roads. By analyzing the characteristics of the old road upgrading and reconstruction， this paper proposes the traffic organization optimization scheme of the urban old road upgrading and reconstruction， so as to achieve a better connection between the upgraded road traffic and the urban road network. Relying on the old road reconstruction example in Xiping County， various traffic organization schemes are comprehensively used， and the traffic flow before and after the optimization of the traffic organization and the delay of the intersection were compared and analyzed. The results show that the traffic organization optimization scheme has significant effect.

Key words： old urban roads; upgrading and reconstruction; traffic organization; optimization

0    引    言

《城市道路工程设计规范》[1]中道路交通量达到饱和状态时的道路设计年限为：快速路、主干路应为20年；次干路为15年；支路宜为10～15年。当城市道路达到使用年限后，会出现坑槽、车辙等道路问题，以及交通拥堵、交通安全等交通问题，则不能满足城市居民的交通出行需求。江红等[2]针对干线公路改扩建施工区的交通组织进行研究，提出修建通行便道、新建半幅施工、过街天桥等交通组织方案。余豫新等[3]提出城市道路改扩建是行之有效的缓解交通拥堵的措施之一，通过分析城市道路改扩建的设计特点，提出以提升交通功能、减少交通拥堵为原则，如增加机动车道数量、分隔快慢交通、减少机非干扰、优化交叉口及公交站台等多种设计方案。……