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Characteristics and Mechanical Response of Subgrade Soil in Cold Region Based on Freeze-thaw Cycles
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Zhen-hua WANG1, Ze-cheng WANG1, *, Dong-wei LI2, Zhi-wen JIA1
Science Technology and Engineering | 2025, 25(20) : 8666 - 8673
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Science Technology and Engineering | 2025, 25(20): 8666-8673
• Papers·Traffics and Transportations •
Characteristics and Mechanical Response of Subgrade Soil in Cold Region Based on Freeze-thaw Cycles
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Zhen-hua WANG1, Ze-cheng WANG1, *, Dong-wei LI2, Zhi-wen JIA1
Affiliations
  • 1 School of Civil and Architectural Engineering, East China University of Technology, Nanchang 330013, China
  • 2 College of Civil Engineering and Architecture, Dalian University, Dalian 116622, China
Published: 2025-07-18 doi: 10.12404/j.issn.1671-1815.2405582
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With the rapid development of railway networks in cold regions, frequent subgrade diseases are observed. To investigate the freeze-thaw characteristics and mechanical properties of subgrade soils in cold regions, a series of laboratory tests were conducted. The effects of moisture content, freezing temperature, and freeze-thaw cycles on soil behavior were systematically investigated. The experimental results indicate that the frost heave ratio and thaw settlement coefficient increase consistently with higher moisture content, lower freezing temperatures, and more freeze-thaw cycles. More pronounced moisture migration is observed under conditions of higher initial moisture content and higher freezing temperatures. The upper part of soil samples shows gradual moisture reduction while the lower part exhibits moisture accumulation with increasing freeze-thaw cycles. The freezing temperatures are measured as -1.96, -1.89, -2.17, -2.06 ℃ for initial moisture contents of 8%, 10%, 12%, and 14% respectively, with the lowest freezing temperature occurring at 12% moisture content. The strength variation ranges are determined as 3.63~6.15 MPa with increasing moisture content, 3.26~6.05 MPa with decreasing freezing temperatures, and 4.49~3.68 MPa with increasing freeze-thaw cycles. These findings are considered significant for ensuring the stability and safety of transportation infrastructure in cold regions.

freeze-thaw cycles  /  cold region  /  railway  /  roadbed  /  mechanical response
Zhen-hua WANG, Ze-cheng WANG, Dong-wei LI, Zhi-wen JIA. Characteristics and Mechanical Response of Subgrade Soil in Cold Region Based on Freeze-thaw Cycles[J]. Science Technology and Engineering, 2025 , 25 (20) : 8666 -8673 . DOI: 10.12404/j.issn.1671-1815.2405582
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Year 2025 volume 25 Issue 20
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Article Info
doi: 10.12404/j.issn.1671-1815.2405582
  • Receive Date：2024-07-25
  • Online Date：2026-05-13
  • Published：2025-07-18
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  • Received：2024-07-25
  • Revised：2025-04-12
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Affiliations
    1 School of Civil and Architectural Engineering, East China University of Technology, Nanchang 330013, China
    2 College of Civil Engineering and Architecture, Dalian University, Dalian 116622, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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