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Estimation of element‐by‐element demand‐to‐capacity ratios in instrumented SMRF buildings using measured seismic response
Author(s) -
Hernandez Eric,
Roohi Milad,
Rosowsky David
Publication year - 2018
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.3099
Subject(s) - acceleration , structural engineering , instrumentation (computer programming) , probabilistic logic , engineering , element (criminal law) , building code , finite element method , seismic loading , moment (physics) , computer science , physics , classical mechanics , artificial intelligence , law , political science , operating system
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.