Consideration of economic vulnerability in seismic performance evaluation of structures

Risk (economic, social and environmental) assessment and mitigation have recently gained great attention. It refers to computing the risk of a community’s infrastructure associated with natural hazards such as earthquakes, landslides, hurricanes or others. Performance evaluation of structures has un...

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Bibliographic Details
Published in:Bulletin of earthquake engineering 2020-05, Vol.18 (7), p.3351-3381
Main Authors: Romero, Daniela Zuloaga, Akbas, Bulent, Budiman, Jeff, Shen, Jay
Format: Article
Language:English
Subjects:
Civil Engineering
Deformation
Ductility
Ductility tests
Dynamic analysis
Earth and Environmental Science
Earth Sciences
Earthquake damage
Earthquakes
Economic impact
Economics
Environmental assessment
Environmental Engineering/Biotechnology
Fragility
Geological hazards
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Hurricanes
Hydrogeology
Landslides
Mitigation
Original Research
Parameter estimation
Performance evaluation
Seismic activity
Seismic response
Spectral analysis
Spectrum analysis
Structural Geology
Vulnerability
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Summary:Risk (economic, social and environmental) assessment and mitigation have recently gained great attention. It refers to computing the risk of a community’s infrastructure associated with natural hazards such as earthquakes, landslides, hurricanes or others. Performance evaluation of structures has until now been based on evaluation of maximum displacements, interstory drifts, deformation patterns, ductility and other similar parameters; a relative economic loss estimation as a performance measure for the structure is the next step that follows, and is what has been investigated in this work. For this study a steel mid-rise structure was designed according to code provisions (ASCE 7-10, NSR-10, AISC-341) using modal spectral analysis, after which it was subjected to an Incremental Dynamic Analysis procedure to evaluate the capacity curve of the building. The capacity analysis was then used to determine damage states and compute fragility curves. Finally, economic relative loss values were assigned to represent each designated damage state, for which the mean damage ratio was computed (in terms of economic loss relative to total replacement cost) as a function of spectral displacement. Assigning a relative loss index to damage states is the critical stage of the analysis.
ISSN:1570-761X
1573-1456
DOI:10.1007/s10518-020-00822-2