Discussion on Technologies for the Treatment and Reinforcement of High-speed Railway’s Subgrade Base

Connecting with some common forms of the treatment of high-speed railway’s subgrade base in China, this paper expounds some common forms of subgrade damage and the harmfulness caused by the subgrade damage to the operation of high-speed railway, sums up the classification and application of subgrade treatment methods, and emphatically discusses the cast-in-situ concrete cylinder pile method and static grouting method that have been developed in recent years from aspects of operation mechanism, construction equipment, technology, features, and construction attentions, etc.