RT Journal T1 Investigation of frost heave prevention using permeable subgrade structure A1 DeGou Cai, JianPing Yao, HongYe Yan, QianLi Zhang, AiJun Cheng, Jie Liu PB Sciences in Cold and Arid Regions FD 2015-10-01 YR 2015 JF Sciences in Cold and Arid Regions JO Sciences in Cold and Arid Regions VO 7 IS 5 SP 611 DO 10.3724/SP.J.1226.2015.00611 K1 high-speed railway;frost-heave prevention structure;permeable filling material;filling material production;compaction control LK {http://www.scar.ac.cn/CN/article/article_198.shtml}