基于 OD 反推的交通需求分析方法研究

对于影响范围较大、道路系统较为复杂的项目的交通需求分析问题，结合T ransCAD软件平台，提出了基于OD反推的交通需求分析方法。以背景交通量作为路段流量，OD反推得到虚拟分区的客流发生、吸引量，继而进行四阶段交通需求预测。相对于传统＂手工＂分配，在背景交通量基础上叠加流量的方法，文章提出的方法能够有效避免高估干道，低估次要道路拥堵程度的情况，可以细化到支路层面进行分析。

Travel Demand Analysis Method Based on OD Estimation

This paper addresses the traffic demand analysis problem for the project which has wide incidence and complex road system .A new traffic demand analysis method is proposed by using OD estimation with TransCAD plat-form .By using the background traffic flow as the link flow and setting up virtual partitions ,OD estimation can be carried out .According to the relationship between OD matrix and PA matrix ,the passenger flow of virtual partitions can be ob-tained .Then ,the forecast of virtual partitions and the area can be done by four-stage transport demand forecasting .Fi-nally ,the proposed method is demonstrated by using a traffic demand analysis for the adjustment of the regulatory de-tailed planning of a city as an example ,which proves that the proposed method is reasonable and effective .