Estimation of element‐by‐element demand‐to‐capacity ratios in instrumented SMRF buildings using measured seismic response

Summary 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...

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Bibliographic Details
Published in:Earthquake engineering & structural dynamics 2018-10, Vol.47 (12), p.2561-2578
Main Authors: Anil, Chopra, Hernandez, Eric, Roohi, Milad, Rosowsky, David
Format: Article
Language:English
Subjects:
Acceleration
Aseismic buildings
Buildings
Capacity
Computer simulation
Demand
Earthquakes
Finite element method
Instrumentation
instrumented buildings
Kalman filter
Methodology
postearthquake assessment
Ratios
response estimation
Seismic activity
Seismic response
Steel
Steel frames
Steel structures
structural health monitoring
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Summary:Summary 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.
ISSN:0098-8847
1096-9845
DOI:10.1002/eqe.3099