Earthquake Behavior of Frame Structures Including Subsoil with Different Stiffening Members

The purpose of this study is to investigate the linear behavior of frame structures including subsoil with different stiffening members subjected to earthquakes and to compare the results of each frame considered. These comparisons are made separately for displacement, bending moment and axial force for frames with different story and bay numbers for the time history and the modal analysis. The results of both methods are also compared. It is concluded that all stiffening members considered in this study decrease the lateral displacement of the frame and the bending moment of the columns and increase the axial force in the columns and that configuration of the bracing members come out to be an important parameter in braced frames since the frame with the same type of bracing give different results depending on configuration. It is also concluded that, in general, the maximum displacements of the frames modeled with subsoil are larger than those of the frames modeled without subsoil

Keywords:

Eartquake behavior , structure , stiffening members , braced frames , subsoil