The previous literature of railway revenue management (RM) ignores the negative impact of the problem of fragmented seat resources (PFSR) on passenger transport income. A single train is characterized by continuous transport of multiple segments. Under the condition that a given seat number is assigned to each random arriving customer during the pre-sale period, the remaining seat resource of each rail leg of the train may be distributed on different seats in a fragmented way. When a customer wants to purchase a long-distance transport product, because the remaining seat resource of each rail leg may be not in the same seat, the train cannot provide a service to the customer. This will result in lost customer demand and wasted seat resources. This paper mainly studies the impact of PFSR on railway RM, and a new seat control method is proposed to avoid the revenue loss caused by PFSR. Based on the case study of a real high speed railway (HSR) network, PFSR causes an average revenue loss of 3.95% for passenger transport. The influence of the number of train segments, the size of customer demand and passenger refund rate on PFSR is studied.

以往关于铁路收入管理（RM）的文献忽略了碎片化座位资源（PFSR）问题对客运收入的负面影响。单列列车的特点是多段连续运输。在预售期间为每个随机到达的客户分配给定座位号的情况下，列车每个轨道支路的剩余座位资源可能以碎片化的方式分布在不同的座位上。当客户想要购买长途运输产品时，由于各铁路段的剩余座位资源可能不在同一个座位上，导致列车无法为客户提供服务。这将导致客户需求丢失和座位资源浪费。本文主要研究PFSR对铁路RM的影响，并提出了一种新的座位控制方法来避免PFSR带来的收入损失。基于真实高速铁路 (HSR) 网络的案例研究，PFSR 导致客运平均收入损失 3.95%。研究了列车分段数、客户需求规模和旅客退票率对PFSR的影响。