Practice Research on Wet-Collapsible Loess Foundation Treatment by High Energy Dynamic Compaction

摘要

A systematic and comprehensive study on the design, construction and testing of large scale of III～IV grade wet-collapsible loess foundation treatment by 8000 kN·m high energy dynamic compaction is done in this paper. Effect on the treatment for collapsible loess foundation by dynamic compaction is analyzed through Rayleigh wave velocity test, standard penetration test, lab soil test and static cone penetration test. By comparison with physical and mechanical properties index of the foundation soil without dynamic compaction treatment, the effective reinforcement depth, the elimination of collapsibility and the bearing capacity of foundation are found to meet the design requirements. The results of this paper could supply some reference for the design, construction and testing of other collapsible loess foundations by dynamic compaction treatment.