抄録
Pile driving formulas based on the stress-wave theory are presented in this paper. The rigid body hammer and the elastic hammer with no cushion are used for hammer conditions and as the model of the pile base resistance, the rigid-plastic model and the elasto-plastic one are employed. Pile driving formulas presented in this paper and those of ordinary used ones are examined by using the results of the numerical simulation of the pile drivings based on the stress-wave theory. As the results of the theoretical analysis, the applicability of ordinary used pile driving formulas are better for cases which have long duration of the driving force. And it is also found that the applicability of the pile driving formula depends on the wave form of the driving force.
