STUDY ON NON-LINEAR DYNAMICAL CHARACTERISTIC OF PILE-SOIL SYSTEM FOR VIBRATORY PILE DRIVING PROCESS

摘要

Vibratory pile driving method is broadly applied in the pile foundation construction. But the research of dynamical characteristic of pile-soil system for the pile driving process is less. In this paper, the pile-soil system of pile driving process was studied with non-linear vibration theory. The vibration friction phenomenon was revealed. And the dynamical equation of pile-soil system was established. Pile driving theory and dynamical characteristic of it were studied when its approximate value was gained. The result presented in this paper will provide the theoretic basis for the theory research of vibratory pile driving process and provide the effectual measurement for improving vibratory pile driver-extractor work efficiency.