The vibratory piling hammer is designed using the principle of resonance theory.
When the forced vibration frequency of the pile is consistent with the vibration frequency of the soil,
the soil will resonate accordingly. At this time, the soil condition and the pile sinking resistance,
especially the side resistance between pile wall, will decrease rapidly, and the pile will sink under
its own weight to complete the vibratory piling work.
Since the vibratory piling hammer achieves the purpose of pile sinking by reducing the friction between
the pile wall and the soil, when the friction between the pile wall and the soil is reduced, a force
slightly greater than that of the pile and the pile body can be used to reduce the friction between the
pile wall and the soil. The pile is pulled up.
Compared with the impact piling hammer, the vibratory piling hammer has the functions of piling and pulling
at the same machine, so it has been more and more used in recent years.