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Prediction of hysteretic energy demands in steel frames using vector-valued IMs
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 Title & Authors
Prediction of hysteretic energy demands in steel frames using vector-valued IMs
Bojorquez, Eden; Astorga, Laura; Reyes-Salazar, Alfredo; Teran-Gilmore, Amador; Velazquez, Juan; Bojorquez, Juan; Rivera, Luz;
 Abstract
It is well known the importance of considering hysteretic energy demands for the seismic assessment and design of structures. In such a way that it is necessary to establish new parameters of the earthquake ground motion potential able to predict energy demands in structures. In this paper, several alternative vector-valued ground motion intensity measures (IMs) are used to estimate hysteretic energy demands in steel framed buildings under long duration narrow-band ground motions. The vectors are based on the spectral acceleration at first mode of the structure Sa() as first component. As the second component, IMs related to peak, integral and spectral shape parameters are selected. The aim of the study is to provide new parameters or vector-valued ground motion intensities with the capacity of predicting energy demands in structures. It is concluded that spectral-shape-based vector-valued IMs have the best relation with hysteretic energy demands in steel frames subjected to narrow-band earthquake ground motions.
 Keywords
intensity measures;hysteretic energy;steel frames;spectral shape;narrow-band motions;
 Language
English
 Cited by
1.
A simplified procedure to estimate peak drift demands for mid-rise steel and R/C frames under narrow-band motions in terms of the spectral-shape-based intensity measure INp, Engineering Structures, 2017, 150, 334  crossref(new windwow)
2.
A modified three-parameter lognormal distribution for seismic demand assessment considering collapse data, KSCE Journal of Civil Engineering, 2018, 22, 1, 204  crossref(new windwow)
3.
Seismic hazard maps based on the intensity measure I Np, KSCE Journal of Civil Engineering, 2018, 22, 1, 247  crossref(new windwow)
4.
A new ground motion intensity measure I B, Soil Dynamics and Earthquake Engineering, 2017, 99, 97  crossref(new windwow)
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