On the Use of Vector-Valued Intensity Measure to Predict Peak and Cumulative Demands of Steel Frames under Narrow-Band Motions

Abstract:

In this study, various alternative vector-valued ground motion intensity measures (IMs) are used to estimate maximum inter-story drifts and hysteretic energy demands of steel framed buildings under long duration narrow-band ground motions. The vectors are based on the spectral acceleration at first mode of the structure as first parameter Sa (T₁). As the second parameter of the vector, IMs related to peak, integral and spectral shape parameters are selected. It is concluded that spectral-shape-based vector-valued IMs have the best relation with maximum inter-story drift and energy demands in steel frames subjected to narrow-band earthquake ground motions.

• Periodical: Applied Mechanics and Materials (Volume 595)
• Pages: 137-142
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.595.137
• Online since: July 2014
• Authors: Edén Bojórquez*, Alfredo Reyes-Salazar, Sonia E. Ruiz
• Keywords: Intensity Measure, Inter-Story Drift, Narrow-Band Motions, Spectral Shape, Steel Frames

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