湖南大学学报（自然科学版）2026，Vol.53Issue(1)：1-11,11.DOI:10.16339/j.cnki.hdxbzkb.2026001
冻融循环下加筋砂土边坡性能模型试验研究
Model test study on performance of reinforced soil slope under freeze-thaw cycles
摘要
Abstract
To examine the impacts of freeze-thaw cycles on the performance of geogrid reinforced soil slope and the inhibition effect of reinforcement on sand slope deformation,two model tests were conducted on 1.2 m high slopes subjected to 7 freeze-thaw cycles under-25℃ and 30℃ conditions.The tests compared the performance of reinforced and unreinforced slopes,analyzing qualitative and quantitative variations in heat transfer,moisture migration,settlement,and lateral deformation of the slopes under freeze-thaw cycles.The results indicated that the slope temperature exhibited periodic changes during freeze-thaw cycles,with diminishing influence of external temperature from the free surface inward.During freezing,moisture migration within the slope occurred bidirectionally toward the free surface and base,while vertical migration predominated during thawing due to gravity.The slope settlement demonstrated periodic frost heave and thaw subsidence,with cumulative total settlement increasing with the number of freeze-thaw cycles.The slope displacement displayed freeze-expansion and thaw-induced contraction,and the total displacement increased with the number of freeze-thaw cycles.Reinforcement hindered vertical moisture migration within the slope,thereby changing the temperature field of the slope,and reinforcement effectively mitigated the deformation of the slope caused by freeze-thaw action.关键词
土工合成材料/砂土/加筋土边坡/冻融循环/模型试验Key words
geosynthetic/sand/reinforced soil slope/freeze-thaw cycle/model test分类
建筑与水利引用本文复制引用
徐超,韦小当,孟亚,杨阳,贾斌..冻融循环下加筋砂土边坡性能模型试验研究[J].湖南大学学报（自然科学版）,2026,53(1):1-11,11.基金项目
国家自然科学基金资助项目(41772284),National Natural Science Foundation of China(41772284) （41772284）
国家电网有限公司特高压建设分公司科技项目(SGTYHT/23-JS-001),Scientific Research Program of State Grid Co.,Ltd.UHV Construction Branch of China(SGTYHT/23-JS-001) （SGTYHT/23-JS-001）
中国电力工程顾问集团华东电力设计院有限公司科研项目(30-K2023-G01),Scientific Research Program of the East China Electric Power Design Institute Co.,Ltd.of China Power Engineering Consulting Group(30-K2023-G01) （30-K2023-G01）
