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Vulnerability Assessment of Existing RCMRF Structures Subjected to Near Field Earthquakes

Seyedi Rezvani, Mohammad Hosein | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 41515 (53)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Rahimzadeh Rofooei, Fayyaz
  7. Abstract:
  8. The objective of this study is to evaluate the seismic vulnerability of the existing buildings subjected to the near field earthquakes. The main applications of this research are loss estimation and performance evaluation of the existing buildings. That could provide a better solution and particularly more useful information to the owners, investors, and insurers about the expected performance of buildings under earthquake excitations. A number of 2, 5 and 8 story reinforced concrete buildings, designed according to the old Iranian seismic provisions of ISIRI-519 and ACI 318-83 codes for the ordinary moment resisting frames, are considered. By the use of a number of near field earthquake records that are scaled to different PGAs, parametric studies are performed and the related damage indices are determined. Based on the results obtained, fragility curves produced for RCMRF Structures could be used for safety evaluations of these buildings under near field earthquakes. For the numerical part, the IDARC program is used to perform the nonlinear time history dynamic analyses using the Park & Ang damage index. Sensitivity analyses show the effects of the number of spans, the length of spans and the number of earthquake records. To conclude, the damages for different scaled PGA’s are summarized in Tables, and after some statistics calculations, the fragility curves were produced. Then the results of sensitivity analysis are compared with those of the main samples.
  9. Keywords:
  10. Fragility Curve ; Failure Analysis ; Seismic Vulnerability ; Near-Field Earthquake

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