快速化一级公路起终点衔接节点方案研究

Study on Connection Node Scheme for Starting and Ending Points of Expressway First-Class Highways

摘要:

城镇化进程中，一级公路兼具过境与城市交通集散职能，城区段拥堵问题突出，快速化改造成为关键举措。面对城镇化片区两条快速化一级公路起终点衔接的情况时，由于衔接节点车流复杂，交通主流向判别困难，难以确定节点方案。针对快速化一级公路起终点衔接节点方案问题，提出“基础要素解析—交通特征分析—节点方案”的方案研究技术路线，综合考虑经济、人口、土地开发、规划等基础要素，进行交通量预测，分析节点交通转向特征，结合建设条件，通过多方案比选确定适配可行的衔接方案，并以嘉善县嘉善大道工程为例验证研究路线合理性，为同类工程提供借鉴。

Abstract:

In the process of urbanization, the first-class highways undertake both through-traffic and urban traffic distribution functions. The traffic congestion in urban sections is prominent, and the expressway reconstruction has become a key measure. When dealing with the connection between the starting and ending points of two rapid expressway first-class highways in an urbanized area, it is difficult to identify the main traffic flow directions due to the complex traffic at the connection node, and the node schemes are hard to determine. Aiming at the connection node schemes of starting and ending points of expressway first-class highways, a technical research route for the scheme of “basic element analysis, traffic characteristic analysis and node scheme” is proposed to comprehensively consider the basic elements of economy, population, land development and planning, to conduct the prediction of traffic volume, and to analyze the traffic turning characteristics at the nodes. The adaptive and feasible connection schemes are determined through multi-scheme comparison in combination with construction conditions. Taking the Jiashan Avenue Project in Jiashan County as an example, the rationality of the research route is verified, which can provide a reference for similar projects.