基于轨道换乘的复合交通网络OD拆分重组技术

OD Splitting and Recombining Technology of Composite Traffic Network Based on Railway Transfer

为使传统"四阶段法"适用于分析城市多模式复合网络的交通需求,基于轨道交通换乘特征,将组合出行OD拆分重组为单一方式出行OD,从而提高复合交通需求预测的准确性。首先,分析多模式复合网络中OD类型,包括全方式OD、轨道客流OD、轨道接驳客流OD以及道路出行OD。然后,提出复合交通网络OD拆分重组技术。将交通可达性作为换乘客流预测的依据,以轨道车站为组合出行拆分的突破点,将组合出行链分解为道路出行与轨道出行两部分,从而有效解决需求预测中组合出行预测问题。最后,以长沙滨江新城为例,说明该方法的实用性。研究成果表明,由于换乘出行在居民出行中占有很大比例,该技术既考虑了轨道交通节点在网络中的特殊功能与地位,又使规划工作可以借助Trans CAD等规划软件完成,在解决基于轨道的组合交通方式的预测问题方面,具有较好的适用性。

In order to adapt the traditional four-stage method for analyzing the traffic demand of urbanmulti-mode composite traffic network, the accuracy of traffic demand forecast was improved by splittingcombined travel OD matrix into single mode travel OD matrix based on the characteristics of railwaytransfer. Firstly, OD matrix types of composite network were analyzed including all modes OD matrix,railway passenger flow OD matrix, railway access passenger flow OD matrix and road travel OD matrix.Secondly, combined travel forecast of demand forecast was realized by presenting OD splitting and re-combining technology of composite network which referred accessibility as the basis to forecast the trans-fer passenger flow and took the railway station as the breakthrough to split the combined travel chain in-to road travel and railway travel. Finally, Changsha Binjiang New District was taken as an example todemonstrate the practicality of this method. Since transit travel accounts for a large percentage of resi-dent trip, the research results show that this method has excellent adaptability as the special functionsand status of the nodes in urban rail transit networks are concerned and the planning tasks can be ful-filled with the help of transportation planning software such as Trans CAD.