铁道标准设计2018，Vol.62Issue(4)：22-26,5.DOI:10.13238/j.issn.1004-2954.201709180006
石灰桩对冻土地基预融效果模型试验研究
Experimental Research on Effect of Lime Pile on Prethawing of Permafrost Foundation
摘要
Abstract
How to deal with the frozen soil and meet the requirements of bearing capacity is the key to the construction in frozen soil in permafrost regions of high latitude, where infrastructure project is to be implemented. In this paper,in order to study the pre-melt compaction effect in the permafrost region,a proposal is forwarded that lime pile is employed to release heat and fulfill pre-melt as the starting point of the destruction of the shallow frozen soil. The lime pile is used as the foundation treatment in permafrost area,the changes of temperature,moisture content and density of the foundation soil in different position and depth are measured through indoor model test to determine the radius of the influence of the lime pile on the pre-thawing and compaction for permafrost foundation. The research results show that the lime pile can thaw the permafrost and raise the density of the soil between piles.关键词
冻土地基/石灰桩/时间-温度曲线/配合比/模型试验Key words
Permafrost foundation/Lime pile/Time-temperature curve/Proportion of mixture/Model test分类
交通工程引用本文复制引用
王兴,熊治文,刘德仁,韩龙武,程佳..石灰桩对冻土地基预融效果模型试验研究[J].铁道标准设计,2018,62(4):22-26,5.基金项目
中国中铁股份有限公司科技开发计划(2016-重大-01) （2016-重大-01）
中铁科学研究院有限公司科技开发计划项目(中铁科研院(科研)字2017-KJ007-Z007-XB) （中铁科研院(科研）
