RT Journal T1 Summary of research on frost heave for subgrade in seasonal frozen ground A1 Shuang Jia,BoWen Tai,ShouChen Qi,Lei Li,Tao Chen PB Sciences in Cold and Arid Regions FD 2021-06-30 YR 2021 JF Sciences in Cold and Arid Regions JO Sciences in Cold and Arid Regions VO 13 IS 3 SP 195 DO 10.3724/SP.J.1226.2021.20092. K1 ;seasonal frozen ground;railway subgrade;frost heave;anti-frost measures LK {http://www.scar.ac.cn/EN/article/article_358.shtml}