A computational model of pile vertical vibration in saturated soil based on the radial disturbed zone of pile driving

摘要: In this study, a simplified computational model of pile vertical vibration was developed. The based on the inhomogeneous radial disturbed zone soil in vicinity by driving. contained two regions: zone, which located immediate pile, and undisturbed region, external to zone. model, excess pore pressure caused driving assumed follow logarithmic distribution. relationships stress strain were principle effective under plain conditions. governed poroelastic theory proposed Biot. With use variable separation method, an analytical solution frequency domain obtained. Furthermore, semi-analytical attained employing numerical convolution method. Numerical results from time indicated that equivalent radius ratio had significant effect dynamic response. However, actual interactions between will be weaker due presence is Consequently, ideal overestimates interaction soil; however, reflects better than perfect contact model. indicate can account for tests.