城际铁路高峰时段通过能力计算方法研究

Method of the Carrying Capacity during Rush Hour on Intercity Railway

城际铁路高峰时段通过能力是确保其良好行车组织的重要技术参数,确定其值具有一定的复杂性和不确定性.根据我国城际铁路高峰时段运营特征,在利用已有通过能力计算方法的基础上,通过影响因素和列车间隔时间、不同种类列车越行等列车运行结构分析,采用修正的负指数分布模型,提出高峰时段通过能力计算方法,方法力求实用、有效、简便、准确.以沪宁城际高速铁路某段为例进行验证,结果表明,方法符合运营实际.该方法的采用对城际铁路通过能力利用起到很好的借鉴作用.

The carrying capacity during rush hour on intercity rail is an important technical parameter to ensure good traffic organization,and determining its value is with a certain complexity and uncertainty.According to actual operating features during rush hour on intercity railway in China,based on making use of the existed calculating methods,and by analyzing influence factors,the time of train interval and overtaking between different class trains,the paper adopts the improved mode of negative index distribution,and advances the calculated method of carrying capacity during the rush hour on intercity railway.The method has been strived to practicality,availability,convenience,accuracy.The paper gives an example of certain division on Hu-Ning intercity highway railway,which is being constructed on the foundation of train graph in the future to explain the new method.The result indicates that the method accords with the actual situation on intercity railway.The use of the method will be for reference on calculating carrying capacity on passenger dedicated railway.