Identification of Torsionally Stiff and Flexible Asymmetric Systems, and Their Comparative Seismic Response Evaluation for Low-Rise Frames

Date

2023-01-01

Author

Kaatsız, Kaan
Sucuoğlu, Haluk

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Torsional status indicators of asymmetrical plan systems are evaluated. The ratio of two modal participation factors in a translational direction (lower to higher mode) is proved as a more accurate indicator than the ratio of translation and rotation dominant modal periods. Seismic responses of low-rise asymmetric-plan frames are then assessed through linear elastic and nonlinear response analysis of representative systems under bi-axial ground motion pairs. The results revealed that those systems that are initially identified as torsionally stiff exhibit a torsionally stiff nonlinear response, whereas those initially categorized as torsionally balanced or flexible evolve to a stiffer torsional performance.

Subject Keywords

accidental eccentricity, Asymmetric systems, plan irregularity, torsional status indicators, torsionally flexible, torsionally stiff

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85164605267&origin=inward
https://hdl.handle.net/11511/104725

Collections

Department of Civil Engineering, Article