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Accidental torsion in yielding symmetric structures

Pekau, O.A. / Guimond, R.

AbstractBuilding codes recognize a variety of sources of accidental eccentricity in buildings subjected to seismic excitation. This study examines the adequacy of code provisions for accidental eccentricity to account for torsion induced in nominally symmetric structures due to variation in the strength of elasto-plastic lateral load resisting elements or by unbalanced degradation in stiffness. The behaviour of an idealized single-storey structure subjected to different earthquake ground motions is examined, as well as the influence of torsional to translational frequency ratio $Ω 0$ and lateral period of vibration $T o$ .

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Accidental torsion in yielding symmetric structures

Pekau, O.A. / Guimond, R.

AbstractBuilding codes recognize a variety of sources of accidental eccentricity in buildings subjected to seismic excitation. This study examines the adequacy of code provisions for accidental eccentricity to account for torsion induced in nominally symmetric structures due to variation in the strength of elasto-plastic lateral load resisting elements or by unbalanced degradation in stiffness. The behaviour of an idealized single-storey structure subjected to different earthquake ground motions is examined, as well as the influence of torsional to translational frequency ratio $Ω 0$ and lateral period of vibration $T o$ .

Accidental torsion in yielding symmetric structures

Pekau, O.A. / Guimond, R.

AbstractBuilding codes recognize a variety of sources of accidental eccentricity in buildings subjected to seismic excitation. This study examines the adequacy of code provisions for accidental eccentricity to account for torsion induced in nominally symmetric structures due to variation in the strength of elasto-plastic lateral load resisting elements or by unbalanced degradation in stiffness. The behaviour of an idealized single-storey structure subjected to different earthquake ground motions is examined, as well as the influence of torsional to translational frequency ratio $Ω 0$ and lateral period of vibration $T o$ .

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Title:

Accidental torsion in yielding symmetric structures

Contributors:

Pekau, O.A. (author) / Guimond, R. (author)

Published in:

Engineering Structures ; 12 ; 98-105

Publication date:

1990-01-01

Size:

8 pages

ISSN:

DOI:

https://doi.org/10.1016/0141-0296(90)90014-J

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

symmetric structures , yielding , accidental eccentricity , seismic response , unequal strength , unbalanced stiffness degradation

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