研究目的:城市群城际铁路网规模测算是线网规划中的重点内容之一，合理的线网规模可以防止规划与 建设的盲目性。本文分析社会经济发展水平与线网规模的协同耦合关系，综合多方面因素构建基于线路连接 判断的规模测算模型，并从规划目标要求及线网结构性能两方面研究城市群城际铁路线网规模的适应性。以 关中城市群为研究对象进行实例分析，证明测算模型的科学性和合理性，对不同城市群城际铁路线网规划具 有推广应用价值。 研究结论：( 1)城市群社会经济发展水平是影响城际铁路线网规模测算的关键要素;（2)社会经济水平与 路网规模的耦合协调程度与城市群发育程度有关;(3)从路网构成的角度，城际铁路网规模主要决定于关键 需求节点之间的线路规模;（4)在线网规模测算时，既要考虑投资总量的约束，还要判断不同线路规划的客流 需求约束;(5)线网规模的合理性需要从供需均衡以及协调于城市群发展两方面验证;（6)本研究成果可以为 城市群的城际铁路网规划提供理论支撑以及决策参考，完善铁路网规划理论体系。

Research purposes ： Intercity railway network scale measurement is key content of the network planning in urban agglomeration， reasonable network scale can prevent blindness in planning and construction. The cooperative coupling relationship between social economy and the network scale is analyzed and a calculation model is constructed based on a variety of factors. From requirements of planning objectives and structural performance of network two aspects，adaptability of intercity railway network scale is studied. Take Guanzhong urban agglomeration as an example to verify scientificalness and rationality of calculation model. These are valuable for intercity railway network planning in different urban agglomerations. Research conclusions ：( 1 ) The level of socio - economic development of urban agglomeration is a key element that affects intercity railway network scale ; (2 ) The coupling degree between levels of socio - economic development and the size of intercity railway network is related to the development level of urban agglomeration; ( 3 ) From the perspective of network configuration，intercity railway network scale mainly determined by the size of line between key demand nodes; It is necessary to consider the investment constraint and passenger demand restraint in the measurement of intercity railway network scale; ( 5 ) Rationality of network scale embodies in the quantity and quality two levels， balanced coefficient of supply and demand and level equilibrium coefficient are introduced to evaluate; (6 ) The research results can provide theoretical support and decision - making reference for the intercity railway network planning of urban agglomeration , and improve the railway network planning theory system.