城市规模与城市交通发展的系统分析方法

The Systemic Analysis on Metropolis Area and Traffic Generation

给出的系统分析框架表明,交通强度与城市规模、交通强度与道路密度之间存在着正相关关系,道路密度受到城市国土资源的限制,导致城市规模存在发展极限.城市规模的发展一旦超出这个极限,必然会产生现实难于解决的交通拥堵问题.文中还建立了一个城市规模与城市交通协调发展及相互适应的优化模型,认为可以运用社会总成本来评价交通与城市规模的适应性.论文最后结合北京市的实际对以上方法进行了实例验证.

This paper illustrates the positive relationship among the traffic generation, metropolis area and road network density structurally and systemically. The capacity of land use constrains the road network density so that the limit of metropolis area exists to be concerned with the traffic congestion. If the metropolis area is greater than the threshold of it, the heavy congestion of traffic is hardly relaxed. An optimal model is proposed to reflect the coordination between the development of metropolis area and traffic. A practical example about Beijing traffic is used to illustrate the principle.