摘要
本文结合实际工程.对振冲法加固饱和粉砂粉土地基时各个过程的振动孔压进行较为全面的测试与分析,如成孔阶段和成孔后的动孔压消散、复振效应、上下留振阶段和成桩阶段等,还对加固前后的振动孔压作了比较。通过初步分析,提出了一些可供实际工程设计施工参考的意见。
A study of dynamic pore pressure experiments at each stage of vibroflotation for saturated silty soil is presented in this paper. The program of in situ measurements includes :1. Dynamic pore pressure at hole forming stage;2. Dissipation of dynamic pore pressure following the hole forming;3. Effects of repeat vibrotions;4. Dynamicpore pressure at pile forming stage;5. Comparison of dynamic pore pressure between natural silt deposit and that strengthened by vibroflotation.The preliminary analysis and observations in situ are presented.
基金
国家教委博士点基金
关键词
振冲法
饱和粉砂粉土
地基
动孔压
vibroflotation, silty soils, dynamic pore pressure, experimetal study
