Abstract Infill Masonry Walls (IMWs) are used in the perimeter of a building to separate inner and outer space. IMWs may affect lateral behavior buildings, while they different from those partition walls that two spaces. This study focused on seismic vulnerability assessment Steel Moment-Resisting Frames (SMRFs) assuming placement incorporating nonlinear Soil-Structure Interaction (SSI). The ai...

Abstract The architectural requirements imposed on the structural design of buildings sometimes necessitate vertical and horizontal irregularities with their possibly dangerous effects when these structures are subjected to earthquakes. One greatest challenges in engineering is a steel high-rise building (HRB) irregularities. In this research, two irregular (HRBs) were seismically analyzed as 3...

Soil-structure interaction (SSI) effects are typically neglected for relatively lightweight buildings that less than two-three storeys high with a limited footprint area and resting on shallow foundations (i.e., not featuring basement). However, when the above conditions satisfied, in particular large basements present, important kinematic SSI may develop, causing foundation-level motion to dev...

Abstract A twin girder 7-pier bridge, belonging to the "Egnatia" highway that has been facing numerous challenging geohazards, is built within an active landslide. Its seismic performance investigated here through a comprehensive analysis of interaction between foundation, and precarious slope, which might affect 4 piers. The numerical 3D modeling considers in realistic way coupled effects topo...

Abstract A steel high-rise building (HRB) with plan irregularity is a major challenge in engineering design, especially under seismic loads. Soil–structure interaction (SSI) one of the most important factors designing structures. Herein, T-shape HRB subjected to four different earthquakes will mitigate vibration and control displacements base straining actions resulting from by using tuned mass...

Seismic isolation is a powerful tool for mitigating seismic risk and improving structural performance. However, some parameters, such as earthquake inputs soil characteristics, influence the technology’s This research aims to investigate effects of soil–structure interaction (SSI) with regard different moderate earthquakes associated distances source site, frequency content, characteristics on ...

A frequency domain dynamic analysis is needed to obtain the response of structures constructed on a system of base isolators on flexible soil when subjected to earthquake ground motion. In such systems, the lateral stiffness of the base isolators is so small, compared to the structural stiffness, that in an earthquake attack the fundamental vibration mode dominates the response. With this in mi...

The main purpose of the present work is to investigate the impact of soil-structure interaction on performance-based design optimization of steel moment resisting frame (MRF) structures. To this end, the seismic performance of optimally designed MRFs with rigid supports is compared with that of the optimal designs with a flexible base in the context of performance-based design. Two efficient me...

A frequency domain dynamic analysis is needed to obtain the response of structures constructed on a system of base isolators on flexible soil when subjected to earthquake ground motion. In such systems, the lateral stiffness of the base isolators is so small, compared to the structural stiffness, that in an earthquake attack the fundamental vibration mode dominates the response. With this in mi...