Dynamic soil stiffness in lateral vibrations of a floating pile

Haldar, S. S. ; Bose, S. K. (1990) Dynamic soil stiffness in lateral vibrations of a floating pile Soil Dynamics and Earthquake Engineering, 9 (1). pp. 51-56. ISSN 0267-7261

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0267-7261(09)90010-0


The authors' earlier investigation on the vertical and torsional modes of vibrations of a floating pile, is extended to the case of lateral vibrations. As before, the soil is considered to be a homogeneous elastic half-space and the slenderness aspect of the pile is used to assume the pile action on it to be due to a line distribution of horizontal forces. The near-field is determined by assuming that the displacement at a certain depth is predominantly effected by the force at that very level. It is found that it consists of only horizontally polarized coupled shear and compressional waves. The corresponding displacement and stresses yield a relation between the soil impedance to lateral vibration and the horizontal displacement of any point of the pile. When the pile length is made infinite, the result reduces to a form attributed to Baranov. It is found that finiteness of the length of the pile significantly alters the result, but is comparatively insensitive to variation with depth of a point of the pile.

Item Type:Article
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ID Code:64476
Deposited On:12 Oct 2011 12:55
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