中文摘要：

引入元胞长度和元胞交通流密度2个参数，克服了原CTM模型需要所有元胞统一长度的局限性。结合传统的基本图方法和三相交通流理论，构建了考虑迟滞现象的MCTM 模型。以MCTM模型为基础，按照不同的匝道情况，将城市快速路分为不同的匝道间距、不同的匝道位置、匝道口处有无控制三类情形，对城市快速路拥堵传播规律和消散控制策略进行定量分析。仿真结果表明，不同匝道情形下交通流及拥堵传播规律存在较大差异。

英文摘要：

Two parameters including cell length and cell density is introduced into the MCTM to avoid the uniform cell length limitation .Furthermore ,combining traditional fundamental diagram approach and three‐phase traffic theory ,the hysteresis loop characteristics is combined into the MCTM model . This paper employs the MCTM model to investigate traffic congestion problem in urban expressway system ,primarily by analyzing the traffic congestion forming and diffusing process due to different ramp cases including varying in ramp distances、ramp layouts and ramp control strategies .Simulation results show that the traffic congestion propagation characteristics differ greatly with different ramp cases .