夯击
1.Analyses were made of the influence of lamping energy, distance of tamping points and number of passes upon the safety of the existing surrounding structures when a foundation is improved with the dynamic compaction method.
2.Present status on impact load on soil, consensus on acting time of hammer, depth of pit, shape of puddle, and constitutive equation of impact load are summarized. On the basis, analyzed the following aspect of Dynamic Consolidation:
3.Based on engineering practice of dyn amic compaction,the method of decid ing control parameter(such as optimum energy,consolidation dept h,bearing capacity)were proposed out and the compute formula about the dynamic compaction were also establ ished.
