寒旱区科学（英文版）
寒旱區科學（英文版）
한한구과학（영문판）
Sciences in Cold and Arid Regions
2015年
5期
611-618
,共8页
high-speed railway%frost-heave prevention structure%permeable filling material%filling material production%compaction control
This paper set up a series of comprehensive targets based on the concept of 'anti-freeze filler', which include reasonable water retention rate, frost heave characteristics, and compaction characteristics of filling material. Then, a type of permeable graded gravel is proposed, suitable for high-speed railway subgrade. A series of in-door water retention, permeability, and frost heave tests were performed under different graded conditions. Water retention, permeability, and frost heave characteristic of dif-ferent graded filling materials can be determined, in order to define the gradation range of permeable graded gravel. Relying on the frost-heave monitoring record of high speed railway in Northeast China, a series of experimental studies were per-formed, which included on-site filler production, compaction test, and the anti-frost effect test, in order to improve the pro-duction and compaction techniques of permeable graded gravel. From the research of this paper, the use of permeable graded gravel subgrade as the anti-frost structure for the high-speed railway subgrade in cold areas is feasible.
