Rocking vibration of a rigid strip footing on saturated soil

✍ Scribed by X.H. Ma; Y.M. Cheng; S.K. Au; Y.Q. Cai; C.J. Xu

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 353 KB
• Volume: 36
• Category: Article
• ISSN: 0266-352X
• DOI: 10.1016/j.compgeo.2009.02.002

✦ Synopsis

The dynamic response of a rigid strip footing lying on saturated soil is greatly affected by the pore pressure induced by a rocking moment. To consider the complex behavior of the soil under the rocking load, an analytical solution for a rigid strip foundation on saturated soil under a rocking moment is developed under the framework of Biot's coupling theory. The boundary-value problem for the governing coupling equations for saturated soil is solved using a Fourier transform to yield a pair of dual integral equations. These dual integral equations are transformed into a set of linear equations using an infinite series of orthogonal Jacobi polynomials to yield the compliance functions. In addition, a parametric study has been carried out to examine the influence of: (1) the dimensionless frequency, (2) the dynamic permeability and (3) the Poisson's ratio on saturated soil under a rocking rigid strip footing.