土体冻融循环对最北高铁站房装配式雨棚结构性能影响研究
姚福超 , 刘时禹 , 施钦伟 , 翟喜梅 , 查晓雄
结构工程师 ›› 2025, Vol. 41 ›› Issue (05) : 50 -58.
土体冻融循环对最北高铁站房装配式雨棚结构性能影响研究
Study on the Influence of Soil Freeze-Thaw Cycle on the Structural Performance of Prefabricated Canopy at the Northernmost High-Speed Railway Station
伊春西站是中国目前在建纬度最高、首个在严寒地区多年冻土层施工的高铁站房,采用装配式雨棚,土体冻胀对装配式雨棚整体结构性能影响很大。本文通过有限元软件建立雨棚结构模型,进行冻胀作用对桩基影响的模拟,并对冻融时长、变形数量以及冻融位置等参数进行了分析,得到冻胀对装配式雨棚结构性能影响的规律,为严寒地区装配式雨棚安全使用提供依据。
Yichun West Railway Station is the highest-latitude high-speed railway station in China and the first prefabricated canopy station constructed in permafrost regions under severe cold climate. The structural performance of prefabricated canopies is significantly affected by soil frost heave. In this study, a finite element model of the canopy structure is developed to simulate the impact of frost heave on pile foundations. Parameters such as freeze-thaw cycle duration, deformation magnitude, and freeze-thaw position are analyzed. The research reveals the influence patterns of frost heave on the structural behavior of prefabricated canopies, offering a basis for ensuring their safe application in severely cold regions.
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国家自然科学基金项目(52178129)
深圳市科技计划项目(GJHZ20220913143007013)
深圳市科技计划项目(KCXST20221021111408021)
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