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Seismic fragility analysis of 3D structures |
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| Authors: | M. I. J. Schotanus P. Franchin A. Lupoi P. E. Pinto |
| Affiliation: | a European School for Advanced Studies in Reduction of Seismic Risk (ROSE school), Via Ferrata 17, Pavia 27100, Italy b Department of Structural & Geotechnical Engineering, University of Rome “La Sapienza”, Via Gramsci 53, Rome 00197, Italy |
| Abstract: | A statistical approach for time-variant system reliability problems is developed and investigated. The basic proposal is to use a response surface, characterised by a statistical model of the mixed type, to represent the capacity in an analytical limit-state function. The fragility function of the system is then calculated by FORM analysis, with the constructed empirical limit-state function as input. The methodology is applied in the assessment of a 3D RC frame structure. The application allows a number of detailed implementation issues to be clarified, and confirms the robustness and versatility of the method. |
| Keywords: | Response surface Reinforced concrete Multiple failure modes Recorded accelerograms Experimental plan Mixed statistical model FORM |
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