Calculating the Dynamic Impedances of Foundations and their Effect on the Seismic Response of Structures: Analytical and Numerical Study

This study evaluates the movement of a frame built on soft soil under seismic excitation taking into account soil-structure interaction. First, was evaluated using finite element method, then, by substructure method which modelled springs and dampers in linear nonlinear study. Rheological models were determined impedance functions, calculated numerical program CONAN. These dynamic impedances are shown displacement vector three-degrees-of-freedom frame, basis lateral forces distributed over structure height equivalent static method. In this regard, two different calculation norms chosen; RPA2003 UBC97. Finally, parametric carried out, based effects densification foundation geometry response RC frame.