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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 56683 (09)
- University: Sharif University of Technology
- Department: Civil Engineering
- Advisor(s): Maleki, Shervin
- Abstract:
- Choosing and designing a suitable lateral force resisting system in areas with high seismicity has always been one of the main challenges of structural engineers. Therefore, many systems have been developed and implemented over the past decades. Among them, we can mention reinforced concrete and steel moment frames, concrete and steel shear walls, bracing systems and even their combination under the title of dual systems. The choice of each of the above depends on many factors such as the importance of the building, the seismicity of the region, height of the building, architectural restrictions and also cost. Although the evidence of past earthquakes shows that, for a well-designed building, we were able to prevent casualties to a large extent, but the amount of damage is still very high and in many cases, the damaged building cannot be reused. For this reason, new systems, such as different types of shock absorbers and seismic isolators, whose history goes back to the military industry, were employed. Despite the very good performance of many of these systems in earthquakes, due to the high costs of manufacturing, repair, and maintenance, as well as the need for an expert construction team, they can only be used in highly important structures. In this research, expanded polystyrene foams are introduced as a passive seismic energy dissipation material. These low- cost and readily available foams were first used in the packaging and transportation industry due to their excellent impact absorption properties. The method of conducting this research is numerical using Abaqus software. To investigate the performance of these foams in damping seismic energy, typical three and ten-story building frame structures were equipped with brick walls with polystyrene foams around the edges. All framing connections were considered simple such that they do not contribute to lateral resistance. In addition, nonlinear dynamic analysis (time history) and nonlinear static analysis (pushover) were performed. The results showed amazing performance reducing the seismic energy input to the structure
- Keywords:
- Structural Control ; Seismic Energy ; Energy Dissipation ; Masonry Wall ; Seismic Force Resisting System ; Expanded Polystyrene Foams
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