Inelastic dynamic analysis of pile-soil-structure interaction

In this paper, inelastic pile-soil-structure interaction for dynamic analysis is formulated by coupling finite element and boundary element methods. Linear beam-column finite elements are used to model the piles and structural elements. The continuum is assumed to be elastic and an efficient step by step time integration scheme is implemented by using half space integral formulation. Inelastic modeling of soil media is done by a rational approximation to continuum with nonlinear interface springs along the piles. Modified Özdemir's inelastic model is implemented and systems of equations are coupled for piles and pile groups. By using this mixed type of formulation, it is possible to get computationally most efficient and accurate results. In order to verify the proposed formulation, the result of a reported full-scale statnamic load tests are compared.