Estimation of element‐by‐element demand‐to‐capacity ratios in instrumented SMRF buildings using measured seismic response |
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| Authors: | Eric Hernandez Milad Roohi David Rosowsky |
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| Affiliation: | Department of Civil and Environmental Engineering, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, Vermont |
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| Abstract: | This paper presents a methodology to estimate element‐by‐element demand‐to‐capacity ratios in instrumented steel moment‐resisting frames subject to earthquakes. The methodology combines a finite element model and acceleration measurements at various points throughout the building to estimate time history of displacements and internal force demands in all members. The estimated demands and their uncertainty are compared with code‐based capacity from which probabilistic bounds of demand‐to‐capacity ratios are obtained. The proposed methodology is verified using a simulated six‐story building and validated using acceleration data from California Strong Motion Instrumentation Programstation 24370 during the Northridge and Sierra Madre earthquakes. |
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| Keywords: | instrumented buildings Kalman filter postearthquake assessment response estimation structural health monitoring |
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