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| DOI | 10.1080/15732479.2024.2346579 |
| Analytical study on geometrical irregularity and internal loads of railways with CRTS I ballastless tracks on arch bridges subject to thermal effects | |
| 发表日期 | 2024 |
| ISSN | 1573-2479 |
| EISSN | 1744-8980 |
| 英文摘要 | Temperature variation causes geometrical irregularity and additional internal loads in railway systems. The geometrical irregularity and additional internal loads can adversely influence the dynamic behaviors of trains, therefore compromising the safety and ride comfort of trains. This paper presents an analytical study on the deformations and internal loads of railways with CRTS I ballastless tracks on an arch bridge. The bridge is located in the Sichuan-Tibet Railway Line within a high-altitude mountainous terrain exposed to significant temperature variations. This research derives analytical formulae to analyze the deformations and internal loads of railways under various temperatures and thermal gradients. The formulae are utilized to evaluate the effects of the stiffness of fasteners and the stiffness of isolation layers of CRTS I ballastless tracks. The results show that temperature changes cause significant vertical deformations and rotations of rails, and reducing the stiffness of fasteners and isolation layers is effective in mitigating rail deformations under the thermal effects. |
| 英文关键词 | Analytical model; CRTS I ballastless track; deformation mapping; railway arch bridge; temperature-induced deformation; track irregularity |
| 语种 | 英语 |
| WOS研究方向 | Engineering |
| WOS类目 | Engineering, Civil ; Engineering, Mechanical |
| WOS记录号 | WOS:001217344900001 |
| 来源期刊 | STRUCTURE AND INFRASTRUCTURE ENGINEERING
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/293013 |
| 作者单位 | Southwest Jiaotong University; Southwest Jiaotong University; Stevens Institute of Technology |
| 推荐引用方式 GB/T 7714 | . Analytical study on geometrical irregularity and internal loads of railways with CRTS I ballastless tracks on arch bridges subject to thermal effects[J],2024. |
| APA | (2024).Analytical study on geometrical irregularity and internal loads of railways with CRTS I ballastless tracks on arch bridges subject to thermal effects.STRUCTURE AND INFRASTRUCTURE ENGINEERING. |
| MLA | "Analytical study on geometrical irregularity and internal loads of railways with CRTS I ballastless tracks on arch bridges subject to thermal effects".STRUCTURE AND INFRASTRUCTURE ENGINEERING (2024). |
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