Analysis of temperature field characteristics based on subgrade site measurements of Harbin-Qiqihar High-speed Railway in a deep seasonal frozen soil region |
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| Authors: | ZuRun Yue BoWen Tai TieCheng Sun |
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| Affiliation: | Graduate School, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, ChinaSchool of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China;School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China;Graduate School, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China |
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| Abstract: | Recent years have seen a large number of high-speed railways built and will be built in seasonal frozen soil regions of China. Although high-speed railways are characterized by being fast, comfortable and safe, higher standards for deformation of the railways' frozen subgrade are required. Meanwhile, changes in subgrade soil temperatures are the main factors affecting the deformation of frozen subgrade. Therefore, this paper selected typical test subgrade sections of the Harbin-Qiqihar Line, a special line for passenger transport built in the deep seasonal frozen soil regions of China, to monitor field temperatures. Also, the temperature changing laws of railways' subgrade in this region was analyzed by using testing data, the aim of which is to provide a technical support for future design and construction of buildings and structures in a deep seasonal frozen soil region. |
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| Keywords: | temperature field deep seasonal permafrost soils railways subgrade |
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