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Earthquakes and Structures Volume 13, Number 1, July 2017 , pages 9-15 DOI: https://doi.org/10.12989/eas.2017.13.1.009 |
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Numerical study on the effects of seismic torsional component on multistory buildings |
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Abderrahmane Ouazir, Asma Hadjadj and Abdelkader Benanane
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| Abstract | ||
| In this paper, the influence of the rotational component, about a vertical axis, of earthquake ground motion on the response of building structures subjected to seismic action is considered. The torsional component of ground motion is generated from the records of translational components. Torsional component of ground motion is then, together with translational components, applied in numerical linear dynamic analysis of different reinforced concrete framed structure of three stories buildings. In total, more than 40 numerical models were created and analyzed. The obtained results show clearly the dependence of the effects of the torsional seismic component on structural system and soil properties. Thus, the current approach in seismic codes of accounting for the effects of accidental torsion due to the torsional ground motion, by shifting the center of mass, should be reevaluated. | ||
| Key Words | ||
| torsional rigidity; translational rigidity; accidental eccentricity; seismic torsional component; torsional coupling | ||
| Address | ||
| Abderrahmane Ouazir, Asma Hadjadj and Abdelkader Benanane: epartment of Civil Engineering and Architecture, Abdel Hamid Ibn Badis University, Faculty for Sciences and Technology, Av. Hamadou Hossine, Mostaganem 27000, Algeria | ||