Characteristics of Settlement and Assessment Methods of Engineered Structures under Certain High-Speed Railway Tracks in China

Xiao, Shi; Yan, Qing Rong; Chen, Wen

doi:10.4028/scientific5/amr.446-449.1869

Cited by 1 publication

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“…According to the “The Global Climate In 2015–2019” released by the World Meteorological Organization and the “2019 China Climate Bulletin” released by the China Climate Center, with global warming, extreme rainfall events are increasingly frequent in China. Under the action of high-frequency train loads, the subgrade is more prone to various defects such as settlement 5 , uplift deformation 6 , 7 , frost damage 8 , and mud pumping 9 . The occurrence of these defects is uncertain and poses a significant threat to human life and property.…”

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confidence: 99%

Multi-defect risk assessment in high-speed rail subgrade infrastructure in China

Wang,

Zhang,

Wang

et al. 2024

Sci Rep

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This study addresses the escalating risk of high-speed railway (HSR) infrastructure in China, amplified by climate warming, increased rainfall, frequent extreme weather, and geohazard events. Leveraging a georeferenced dataset of recent HSR defects obtained through an extensive literature review, we employ machine learning techniques for a quantitative multi-defect risk assessment. Climatic, geomorphological, geohydrological, and anthropogenic variables influencing HSR subgrade safety are identified and ranked. Climatic factors significantly impact frost damage and mud pumping, while geomorphological variables exhibit greater influence on settlement and uplift deformation defects. Notably, frost damage is prevalent in the northeast and northwest, mud pumping along the southeast coast, and settlement and uplift deformation in the northwest and central areas. The generated comprehensive risk map underscores high-risk zones, particularly the Menyuan Hui Autonomous and Minle County sections of the Lanzhou-Urumqi HSR, emphasizing the need for focused attention and preventive actions to mitigate potential losses and ensure operational continuity.

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