CAJ | 학술논문

在单线区段的困难区间修建双线插入段或双线区间是增强区段通过能力和提高列车旅行速度的有效措施。修正了“外包区间”的概念、提出了“双插段单元”和“双线区间单元”（统称“双线单元”）以及在双线单元实现列车双通过周期适应范围的概念；指出双线单元的通过能力是取决于区段条件的变量，取得最大通过能力的基本特征是单元内各区间的周期相等，双线单元只能在一定的运行图周期范围内实现列车双通过且适应的周期范围对于单元上行方向和下行方向一般是不一致的。在这一研究的基础上提出了单双线区段通过能力的计算方法。研究结论可以为单线区段扩能提速设计和单双线区段运营组织提供理论依据。
재단선구단적곤난구간수건쌍선삽입단혹쌍선구간시증강구단통과능력화제고열차여행속도적유효조시。수정료“외포구간”적개념、제출료“쌍삽단단원”화“쌍선구간단원”（통칭“쌍선단원”）이급재쌍선단원실현열차쌍통과주기괄응범위적개념；지출쌍선단원적통과능력시취결우구단조건적변량，취득최대통과능력적기본특정시단원내각구간적주기상등，쌍선단원지능재일정적운행도주기범위내실현열차쌍통과차괄응적주기범위대우단원상행방향화하행방향일반시불일치적。재저일연구적기출상제출료단쌍선구단통과능력적계산방법。연구결론가이위단선구단확능제속설계화단쌍선구단운영조직제공이론의거。
Building double-track insertion interval or double-track interval in the single track sec-tion is one of the effective measures to enhance the through capacity and increase the train trave-ling speed of the railway section.Firstly,the conceptions of the adjacent section outside the double-track insertion or the double-track interval,the double-track insertion unit and the double-track interval unit (both can be called as a double track unit),and the adaptive ranges of the train schedule circle for the trains both in the up and down directions to pass through the unit are re-vised and put forward.Secondly,it is figured out that the through capacity of the unit is a variable depending on the section's conditions;the basic characteristics for the unit to achieve the maximum through capacity are that all the train schedule circles of the intervals in the unit are equal;the sit-uations for the trains of both the two directions to pass through the double-track unit can happen only when the train schedule circles in the section are in certain ranges and the ranges of up and down directions are different.On this research basis,the method for calculating the through ca-pacity of the single and double track section is proposed.The conclusions of this paper can be used as a theoretical basis for designing the projects expanding through capacity and organizing the op-erations of the single track sections.