Abstract: In order to provide convenience for intercity railway enterprises to adjust intercity railway transport properties timely and reasonably, and make them in normal operation and under sustainable development facing the intense competition among the various transportation modes in regional transport corridor, characteristics of transportation tools between big cities are analyzed, and their quantitative descriptions are given. Based on maximizing profit for intercity railway enterprise, considering the constraints that minimum social benefits should be acquired by intercity enterprises, a multivariate nonlinear model for intercity railway property setting and adjustment is built, and it is transformed into unconstrained nonlinear model with penalty functions and solved with step acceleration method. Finally, the model and algorithm designed are applied to the property setting of Chang-Zhu-Tan intercity railway transport at its early stage. The results show that the model and algorithm provided in this paper are feasible. The technical and economic characteristics gained of intercity railway could provide references for the enterprises.

Key words: railway transportation, transport property setting and adjustment, multivariate nonlinear model, intercity railway, step acceleration method

摘要： 为便于城际铁路企业及时、合理地调整城际铁路运输属性,使其能在区域交通走廊各种交通工具竞争激烈的条件下健康运营和可持续性发展,分析了城际间各交通工具的属性特征,并对其进行了定量化描述。以城际铁路企业利润最大化为优化目标,考虑了城际铁路应取得最小社会效益的约束,建立了城际铁路运输属性设置及调整的多元非线性模型。利用罚函数法把模型转化为无约束的非线性模型,运用步长加速法进行求解。最后,把所设计的模型及算法应用到长株潭城际铁路初期运输属性设置中,结果表明本文所建立的模型及采用的算法是可行的,得到的城际铁路的技术经济特征设置值能为企业决策提供参考。

关键词: 铁路运输, 运输属性设置及调整, 多元非线性模型, 城际铁路, 步长加速法