铁道标准设计2018，Vol.62Issue(4)：26-29,4.DOI:10.13238/j.issn.1004-2954.201707190003
巴基斯坦拉合尔市橙线无缝线路设计
Continuously Welded Rail Design of the Orange Line in Lahore Pakistan
徐彩彩1
作者信息
- 1. 中国铁路设计集团有限公司,天津 300251
- 折叠
摘要
Abstract
Continuously welded rail design is one of the key issues in track design. The continuously welded rail design scheme of the Orange Line project in Lahore,Pakistan is analyzed to provide reference for other similar projects. The most part of the orange line is elevated and the bridge structure is dominated by U-shaped simply supported beam. The overall temperature of the Lahore area is high,and the maximum temperature is 47.4 ℃. Ordinary continuously welded rail is laid on the line. Through theoretical calculation and finite element analysis,the strength and stability of the rail, the stress of the bridge pier,the rail breakage and the joint gap values are analyzed and calculated. The results show that the designed stress-free temperature of 35 ±5℃ is accepted on both elevated line and ground line, and the joint gap value of 8mm is acceptable. Meanwhile, recommendations on setting up rail expansion device are put forward.关键词
巴基斯坦/轨道交通/无缝线路/锁定轨温/轨缝/伸缩调节器Key words
Pakistan/Rail transit/Continuously welded rail/Designed stress-free temperature/Joint gap/Rail expansion device分类
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徐彩彩..巴基斯坦拉合尔市橙线无缝线路设计[J].铁道标准设计,2018,62(4):26-29,4.
