对地铁线路长大陡坡和连续提升高度限制的不同看法

Different Perspectives on Limitation of Urban Rail Lines with Long Distance,Big Gradient and Continuous Hoisting Height

对城市轨道交通工程项目建设标准第二十四条之二的线路长大陡坡和连续提升高度限制表提出不同看法。认为把线路坡度和连续提升高度固定成组的科学依据不足,与工程实践存在较大差距。线路纵断面连续提升高度限制16 m的规定,推高了正线困难地段的最大坡度,加剧了矛盾。对第二十四条提出需要分析评价的几个问题,进行仿真计算和运行模拟,并给出明确结论。

In this article, we put forward some different per- spectives on the limitation value set in Table - 2, Clause 24 of the Construction Standard for Urban Rail Transport Project for the line with long distance and big gradient as well as continu- ous hoisting height. However, the scientific basis to make rele- vant gradient and hoisting height a group is not clear, and also there is a large disparity between the clause and the actual pro- ject. The provision sets that the continuous hoisting height was less than 16 m. The maximum gradient of a main line in a diffi- cult area was increased because of this provision, and further contradiction was caused in practical projects. We put forward some problems which should be analyzed and evaluated ac- cording to the Clause 24 and perform simulation calculation and operation, and list unambiguous results.