Torsional Vibration of a Pile Embedded in Saturated Soil Considering Pile Construction Effect

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The torsional vibration of an elastic supporting pile embedded in a radially inhomogeneous saturated soil due to construction disturbance is investigated. At first, the composite soil layer is divided into outer semi-infinite undisturbed and inner annular disturbed zones, and the inner disturbed zone is subdivided into N thin concentric annular sub-layers. Then, the complex impedance at the top end of the pile is derived by substituting the available analytical expression for the shear rigidity of the composite soil layer into the governing equation of the pile. Finally, selected numerical results are obtained to analyze the influence of the radial inhomogeneity of the surrounding soil on the torsional vibration characteristics of the pile.

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377-382

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March 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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