THE RESEARCH OF RELEVANCE THEORY OF CONTROLLING INDEX OF BALLASTLESS TRACK SUBGRADE OF HIGH-SPEED RAILWAY

摘要

Proper way of filling roadbed can ensure train run on the ballastless track. The article discusses about the significance, test principle, disadvantages and advantages of controlling index of filling quality. It analyzes correlation of indexes and the relationship between index and filling depth, rolling compaction times. The results show that K30 does not relate Ev1 a lot and Evd can not take place of K30 and Ev2.