摘要
以国道322库—根公路工程为依托,通过对沿线多年粉质黏土冻土原状样进行融沉试验,分析了融沉系数随含水率、干密度的变化规律,发现弱融沉以上等级的粉质黏土冻土原状样的融沉系数随含水率的增大而增大、随干密度的增大而减小的规律,进而提出了多年冻土区粉质黏土路基的治理思路,为极寒地区多年冻土路基融沉治理提供了理论参考与科学依据。
On the base of the highway project of Kubuchun—Genhe section of National Highway 322,the thawing settlement test was carried out on the undisturbed sample of silty clay for many years along the highway.The variation law of thawing settlement coefficient with water content and dry density was analyzed.It is found that the thawing settlement coefficient of undisturbed samples of frozen soil with more than weak thawing settlement increases with the increase of water content and decreases with the increase of dry density.Then,the treatment scheme of silty clay subgrade in permafrost area is proposed,which provides a theoretical reference and scientific evidence for the treatment of thawing settlement of permafrost subgrade in extremely cold area.
作者
侯晓辉
巩宁
王伟
Hou Xiaohui;Gong Ning;Wang Wei(China Communication North Road and Bridge Co.,Ltd.,Beijing 100024,China;China Road&Bridge Corporation,Beijing 100000,China;School of Civil Engineerings Changchun Institute of Technology,Changchun 130021,China)
出处
《市政技术》
2022年第3期27-31,57,共6页
Journal of Municipal Technology
基金
中交路桥建设有限公司科技研发项目(ZJLJ-2021-39)
2022年度吉林省教育厅科学研究项目(JJKH20220637KJ)。
关键词
多年冻土
粉质黏土
融沉系数
含水率
干密度
permafrost
silty clay
thawing settlement coefficient
water content
dry density
