辽宁工程技术大学学报（自然科学版）2023，Vol.42Issue(5)：521-529,9.DOI:10.11956/j.issn.1008-0562.2023.05.002
岛状多年冻土区水泥改良粗粒料冻胀融沉特性
Freeze-heaving and thawing settling characteristics of coarse grained material improved with cement in island permafrost region
摘要
Abstract
Taking Tieli-Yichun new high-speed railway project as the research object,the effects of freezing temperature,cement modifier content and water refill conditions on the freeze-heave and thaw settlement of subgrade fillers in island permafrost region were studied.The results show that the modified cement filler has a significant effect on controlling frost heave and thaw settlement.Under the condition of water replenishment,the test frost heave rate is larger.The lower the freezing temperature,the higher the frost heave rate.When the freezing temperature and melting temperature remain unchanged,the influence of water refill method on the melting rate of the sample is not obvious.The freeze-heave and thawing regularity of the high railway foundation filling in the island permafrost region is obtained.The research conclusion has certain reference significance for the construction of high speed railway crossing the island permafrost region.关键词
岛状多年冻土/铁伊高铁路基/水泥改良填料/冻胀融沉Key words
island permafrost/Tie-Yi high-speed railway/cement improved packing/the freezing thawing settlement分类
交通工程引用本文复制引用
韩笑,凌贤长,唐亮,田爽,王柯,李善珍..岛状多年冻土区水泥改良粗粒料冻胀融沉特性[J].辽宁工程技术大学学报（自然科学版）,2023,42(5):521-529,9.基金项目
国家重点研发计划项目(2018YFE0207100) （2018YFE0207100）
国家自然科学基金项目(41731288,42102311) （41731288,42102311）
中国博士后科学基金项目(2021M701014) （2021M701014）
