Static analysis of vertically loaded pile group in multilayered transversely isotropic soils

Abstract

Summary In this paper, a coupling approach is presented to study the static responses of vertically loaded pile group embedded in multilayered transversely isotropic soils. The individual pile in pile group is modeled by the finite element method, while the analytical layer‐element method is applied to represent the soil's behavior. Then, the interaction equation of piles and soils is obtained by considering the force equilibrium and displacement compatibility conditions and solved by a FORTRAN program. The results computed by the proposed approach compare favorably with those from some existing solutions and field test. Some typical parametric analysis cases are investigated to study the effect of soil anisotropy, pile stiffness ratio, and pile spacing on the behavior of vertically loaded pile group.

Influence of scour on the vertical response of rock‐socketed piles in layered saturated rock–soil mass

“…The axial force of a rock-socketed pile under different scour types can be further obtained through the FEM theory. 35,36 Once the pile's axial force is obtained, the boundary force along the pile-soil-rock interface under different scour types can be calculated. By substituting the boundary force into Equations ( 16), (18), and (20), the excess pore pressure under the types of without scour, general scour, and local scour can be further obtained, respectively.…”

“…Through utilizing the integral transformation technique of Schapery method, 34 the actual vertical displacement in the physical domain is calculated. The axial force of a rock‐socketed pile under different scour types can be further obtained through the FEM theory 35,36 . Once the pile's axial force is obtained, the boundary force along the pile‐soil‐rock interface under different scour types can be calculated.…”