Review on the macro-modeling alternatives and a proposal for modeling coupling beams in tall buildings

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• 作者：A. Emre Toprak ; ?hsan Engin Bal ; F. Gülten Gülay
• 关键词：Coupled shear ; walls ; Coupling beam ; Macro modeling ; Tall shear ; walled structures ; Effective stiffness ; Diagonal reinforcement
• 刊名：Bulletin of Earthquake Engineering
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：13
• 期：8
• 页码：2309-2326
• 全文大小：3,481 KB
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• 作者单位：A. Emre Toprak (1)
  ?hsan Engin Bal (2)
  F. Gülten Gülay (3)
  
  1. Arup, Barbaros Bulvar? Morbasan Sok. Koza Is Merkezi B Blok K7, 34349?, Istanbul, Turkey
  2. Earthquake Engineering and Disaster Management Institute, Istanbul Technical University, 34469?, Maslak, Istanbul, Turkey
  3. Department of Civil Engineering, Istanbul Technical University, 34469?, Maslak, Istanbul, Turkey
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geotechnical Engineering
  Civil Engineering
  Geophysics and Geodesy
  Hydrogeology
  Structural Geology
  
• 出版者：Springer Netherlands
• ISSN：1573-1456

文摘

Coupling beams between shear walls are one of the key elements for energy dissipation in tall buildings. A representative mathematical model of coupling beam should represent flexure, shear and interface slip/extension mechanisms simultaneously. This goal can be achieved by using either detailed finite element models or by using macro models. This paper presents a review of various macro model alternatives for diagonally reinforced coupling beams in the literature. Three distinct methods have been reviewed in terms of their modeling techniques, the cyclic response overlap and the amount of cumulative plastic energy dissipated based on the results of previously performed tests. Through an analytical study, adequately accurate results can be captured by using macro models, although they are simpler in practice compared to sophisticated micro models. This study shows that, by modifying ultimate shear capacities where concrete material between diagonal bundles is adequately confined, it is possible to capture a more realistic result and a better approximation to the actual responses. It is also concluded that a simpler numerical model for diagonally reinforced coupling beams can be achieved by introducing linear part of slip/extension behavior into elastic part of the beam. It is observed, as a result of this study, that the ratio of effective stiffness to that of the gross cross-sectional one ranges from 0.04 to 0.14 in diagonally reinforced coupling beams depending on the aspect ratio and the beam strength parameters.