Evaluation Method of Loess Foundation Parameters Based on Rayleigh Wave Velocity and Dynamic Compaction Method
Based on the foundation of the Chengwei Expressway in the loess area,the dynamic compaction method was used for foundation treatment to eliminate the collapsibility of the loess.After treatment,the multi-channel transient Rayleigh surface wave method was used for rapid detection.By establishing the correlation between Rayleigh wave velocity and bearing capacity,compaction degree indicators,the physical and mechanical indicators required for the entire site could be indirectly obtained based on a small number of calibration points or empirical formulas.By using methods such as benchmark point flat load test data and benchmark point drilling sampling,the actural measured data were fitted with the sarface wave velocity test data of the corresponding points,the mathematical model of Rayleigh surface wave velocity,bearing capacity,and compaction degree in the loess area was determined through calculation,in order to judge the effect of dynamic compaction method on loess foundation treatment.
万方数据
维普
