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http://dx.doi.org/10.7734/COSEIK.2022.35.5.277

The Interactive Effect of Translational Drift and Torsional Deformation on Shear Force and Torsional Moment  

Kim, In-Ho (Department of Civil Engineering, Kunsan National University)
Abegaz, Ruth A. (Renewable Energy Research Institute, Kunsan National University)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.35, no.5, 2022 , pp. 277-286 More about this Journal
Abstract
The elastic and inelastic responses obtained from the experimental and analytical results of two RC building structures under the service level earthquake (SLE) and maximum considered earthquake (MCE) in Korea were used to weinvestigate the characteristics of the mechanisms resisting shear and torsional behavior in torsionally unbalanced structures. Equations representing the interactive effect of translational drift and torsional deformation on the shear force and torsional moment were proposed. Because there is no correlation in the behavior between elastic and inelastic forces and strains, the incremental shear forces and incremental torsional moments were analyzed in terms of their corresponding incremental drifts and incremental torsional deformations with respect to the yield, unloading, and reloading phases around the maximum edge-frame drift. In the elastic combination of the two dominant modes, the translational drift mainly contributes to the shear force, whereas the torsional deformation contributes significantly to the overall torsional moment. However, this phenomenon is mostly altered in the inelastic response such that the incremental translational drift contributes to both the incremental shear forces and incremental torsional moments. In addition, the given equation is used to account for all phenomena, such as the reduction in torsional eccentricity, degradation of torsional stiffness, and apparent energy generation in an inelastic response.
Keywords
torsional resistance mechanism; resistance eccentricity; modal analysis; elastic; inelastic;
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Times Cited By KSCI : 3  (Citation Analysis)
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