Evaluation of Dynamic Responses of the Base-Isolated Buildings under Earthquake Excitations
Publish place: Third National Conference on Earthquakes and Structures
Publish Year: 1391
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
CESCM03_040
تاریخ نمایه سازی: 6 اسفند 1391
Abstract:
In the present study, nonlinear dynamic responses of the reinforced concrete building structures with lead rubber isolation bearing (LRB) that subjected to earthquake excitations are investigated. Bilinearforce-deformation behavior for LRB isolator is considered. Mechanical properties of isolators arecalculated. Then, designed and utilized in analysis. Evaluation is performed by means of the nonlinear time history analysis method for 4-, 8-, 12-story reinforced concrete buildings in cases of the fixed-base and isolated-base. To perform analysis, Imperial Valley, Northridge and Duzce records of earthquakeapplied to building models. The results of analysis showed that made displacement at the base of isolated buildings fits to design displacement predicted in initiating calculations and not exceed allowable zone. LRB isolation system has high effect on reducing structural responses. Also increasingnumber of floor in base-isolated buildings causes that dynamic responses decrease less than small building structure
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Authors
H. R. Tavakol
Assistant Professor, Department of Earthquake Engineering, Faculty of Civil
F. Naghavi
M. Sc. Student, Department of Earthquake Engineering