Abstract
Still, there are many problems that have no to made clearly the behavior to load of piles driven in the ground. Especially this causes by that of course, it is very difficult that we can find out character of soil itself and the effect that the soil gives to the pile is complex and nonlinear Therefore, since former analyses on the soil has been attempted to investigate by the simplification of caracter of the soil and the easy method to handle mathematicall within allowable limits, inspite of remaining these many problems. In this place, relating to the study on the ratio of diameter and length of foundation pile, we attempted a few analytic consideration on strength of pile to the case such as elastic buckling of pile driven vertically in the ground and vertical pile has initial inclination angle among mutual jointed piles by precision of works. Moreover, as the analytic assumption, we ignored frictional resistance of driving pile and based on the assumption that upper and lower ends axial pressure is equal, and we put in practice theoretical analyses.
