the Study of Yard-and-station Roadbed's Temperature Field of Qinghai-Tibet Railway in Permafrost Region
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摘要: 站场路基的宽度为单线普通路基宽度的两倍。结合青藏铁路试验工程观测数据,分析了站场路基地温场及多年冻土人为上限的特征,探讨了路基的冻结和融化过程的规律,阐述了多年冻土区路基的稳定性问题。Abstract: The width of yard-and-station roadbed is twice over common single-track embankment. Based on the experimental data of Qinghai-Tibet railway's experimentation project, the character of yard-and-station roadbed's temperature field and artificial permafrost table are analyzed, the rule of the process of embankment's freezing and thaw is also discussed. The stability of embankment in permafrost region is also presented.
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Key words:
- permafrost /
- yard-and-station roadbed /
- temperature field /
- artificial permafrost table
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