Determined Methods of Dynamic Stability Critical Length of the Foundation Pile
Based on the principle of elastic stability, this paper deduces the calculating formulas for dynamic stability critical length of foundation piles when lateral syntony occurs under the axial dynamic loads, and analyzes the effects on dynamic stability critical length of foundation piles from the aspects of parameters such as section dimensions of piles, horizontal resistance forces of foundation soil and excitation frequency etc. Study shows that different soil stratum has the bigger effects on the critical length of piles, while damping coefficient smaller. It also puts forward some related measures for reducing vibration of foundation piles, and can provide reference values to the practical engineering.
Q. Sun et al., "Determined Methods of Dynamic Stability Critical Length of the Foundation Pile", Advanced Materials Research, Vols. 261-263, pp. 1434-1438, 2011