基于供需平衡的高密度开发区域道路网密度研究

Study on the Road Network Density of Urban High Density Developed Regions Based on Supply-Demand Balance

为了合理确定城市高密度开发区域道路网的密度及等级结构,以道路网周转量最大和道路建设资金最小为目标函数,从高密度开发区域道路宽度研究入手,以交通供需平衡关系、道路用地面积控制、各级道路间距及功能要求等作为约束条件,建立高密度开发区域合理道路网密度模型,并运用此模型对上海市真如城市副中心道路网进行了分析,结果表明:主干路、次干路与支路最优的道路网等级结构为1:1.9:5.3,实现了高密度开发区域道路资源的优化配置,说明高密度开发区域道路网密度模型是合理的。

In order to determine the appropriate road network density and road grade, the maximum of road capacity and the minimum of road construction fund were taken into consideration to built an objective function. The road width was considered, traffic supply-demand balance relationship, road area control, spaces of different road classes and function of road were taken as constraints, a reasonable road network density model of urban high density developed regions was put forward, and road network in Zhenru Sub-centers of Shanghai was analyzed by using the model. Computation result shows that an optimal solution of road grade for main trunk road, secondary trunk road and branch road is 1 ： 1.9 ： 5.3, which indicates the optimization of road network in high density developed regions, and the model is rational.