Three-Dimensional Seismic Response Characterization Considering Soil-Reticulated Shell-Frame Structure Interaction.

This paper investigates the soil-reticulated Soil Structure (shell-frame) Interaction (SSI) and its seismic response analysis under vertically incident seismic waves. By establishing the mechanical model of the three-dimensional oblique sliding friction seismic isolator (3D OSFSI), the effectiveness in reducing vertical responses is analyzed. The simulation of seismic waves and the automatic application of equivalent nodal forces are realized by using viscoelastic artificial boundaries and ABAQUS software combined with Python scripts. A comparison of the model with and without consideration of SSI found that the SSI effect will increase the peak value of nodes and the axial force of rods, three-dimensional seismic isolation can reduce the structural response, and the effect of different soil parameters is significant, weak soil due to the characteristics of the structural acceleration response of the smallest, so the mesh shell should be considered in the analysis of the seismic response of the site conditions and the effect of soil parameters. [ABSTRACT FROM AUTHOR]