Abstract
An algorithm based on a nonlinear finite element procedure is developed and used to study piling stresses and pile-soil interaction in integral abutment bridges. The finite element idealization consists of beam-column elements with geometric and material nonlinearities for the pile and nonlinear springs for the soil. An idealized soil model (modified Ramberg-Osgood model) is introduced in this investigation to obtain the tangent stiffness of the nonlinear spring elements. Several numerical examples are presented to establish the reliability of the finite element model and the computer software developed.
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