Abstract: In order to effectively cope with the impact of the operation of high-speed rail on the regional transportation patterns, a multimodal partaking rate improved Logit model of high-speed rail transportation channel was constructed by introducing channel utility amplification factor named a. The choice of passenger transportation mode was studied. The multimodal partaking rate before and after the opening of Kunming-Nanning, Kunming-Shanghai and Kunming-Yuxi high-speed railway was solved and a comparative analysis was also carried out, so as to provide countermeasures for the multimodal coordinated development. The research results show that the proposed model has high reliability. As far as Yunnan Province is concerned, after the opening of high-speed railway, it is advisable to form a transportation pattern of “railway in series, highway expansion and air water connection”, so as to realize the coordination and cooperation of various transportation modes, and to develop towards the direction of “provincial highway-oriented, trans-provincial railway-oriented and air-oriented”.

Key words: traffic and transportation engineering, Yunnan high-speed railway, passenger flow partaking rate, Logit model, multimodal coordinated development

摘要： 为探究高铁开通运营对区域交通运输格局的影响，通过引入通道效用放大因子a,构建高铁运输通道多式分担率改进Logit模型，对旅客出行运输方式的选择进行研究，求解昆明—南宁、昆明—上海、昆明—玉溪3条高铁开通前后多式分担率并进行对比分析，为多式协调发展提供对策。研究结果显示：该模型具有较高的可靠性；就云南省而言，高铁开通后宜形成“铁路串联，公路扩展，空水外联”运输格局，以实现多种运输方式协调配合，向“省内公路为主，跨省铁、空为主”的方向发展。

关键词: 交通运输工程, 云南高铁, 客流分担率, Logit模型, 多式协调发展