Simulation Analysis Of The Dynamic Testing In The Application Of Inclined Pile

In the practice of large numbers of projects, the phenomenon of inclined pile is brought about by the influence of the dissolved hole existing at the pile bottom, the squeezing liability of soft soil layer and the non-proper machinery operation in the process of construction. For that reason, the longitudinal load capacity and horizontal shear capacity reduce rapidly, leaving serious hidden security trouble to the construction. So a kind of effective and easy method for the inclined pile testing is a difficult problem being called for urgent solution at present.This thesis bases on the propagation theory of stress wave, and divides the stress wave in the inclined pile into two substances: longitudinal wave and flexural wave, which are then simulated by the Finite Element Method Analyzing system COMSOL Multiphysics. The propagation principle of flexural wave in the pile is discussed in a way that changing the boundary condition at the pile bottom and the impacting impulse at the pile head. Viewing that as the foundation, the relationship that how the characteristics of signals at different position at the head of the pile and in different receiving direction influenced by the extent of inclining is systematically studied, providing two new patterns of thoughts about the inclined pile testing and a introductory method for pile gradient testing. Besides, basic introductions about the influences of the inclining direction and changing point of partial inclined pile and eccentric knock to the pile signal are introduced and confirmed reliable by field results.The accomplishment of this thesis is applicable to the real projects of inclined pile testing, and theoretically paves the road towards the synthesis analysis of longitudinal wave and flexural wave and further research on the inclined pile.