https://scholars.lib.ntu.edu.tw/handle/123456789/172425
標題: | Understanding the trends in torsional effects in asymmetric-plan buildings | 作者: | Lin, Jui-Liang Tsai, Keh-Chyuan Chuang, Ming-Chieh |
關鍵字: | Asymmetric-plan buildings; Inelastic deformation; Modal eccentricity; Torsional effects | 公開日期: | 2012 | 卷: | 10 | 期: | 3 | 起(迄)頁: | 955-965 | 來源出版物: | Bulletin of Earthquake Engineering | 摘要: | This paper studied the reasons behind the four trends in torsional effects in asymmetric-plan buildings observed in the current literature. It was found that the modal eccentricities and the non-proportionality between the modal translations and the modal rotation are key to understanding these trends in torsional effects in asymmetric-plan buildings. These key points were obtained from the three-degree-of-freedom modal systems, which represent the single vibration mode of a two-way asymmetric-plan building. This paper showed that the modal eccentricities, rather than the overall structural eccentricities, are the critical parameters for deciding the trend of the unequal displacement demand on the floor diaphragm. In addition, the non-proportionality between the modal translations and the modal rotation leads to the trend that the torsional effects generally decrease when plastic deformations increase. © Springer Science+Business Media B.V. 2012. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/242356 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862826185&doi=10.1007%2fs10518-012-9339-x&partnerID=40&md5=0929bc3fe9b96e98f1115dfb3934d6da |
ISSN: | 1570761X | DOI: | 10.1007/s10518-012-9339-x | SDG/關鍵字: | Critical parameter; Displacement demand; Floor diaphragms; Inelastic deformation; Keypoints; Modal eccentricity; Modal systems; Nonproportionality; Rotation leads; Torsional effect; Vibration modes; Spot welding; Buildings; asymmetry; eccentricity; elasticity; plastic deformation; torsion; trend analysis; vibration |
顯示於: | 土木工程學系 |
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