Performance-based plastic design method for tall hybrid coupled walls
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Author list: Chan-Anan W., Leelataviwat S., Goel S.C.
Publisher: John Wiley & Sons, Ltd
Publication year: 2016
Journal: The Structural Design of Tall and Special Buildings (1541-7794)
Volume number: 25
Issue number: 14
Start page: 681
End page: 699
Number of pages: 19
ISSN: 1541-7794
Languages: English-Great Britain (EN-GB)
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Abstract
The research presented herein involves a performance-based design method for a tall hybrid coupled wall (HCW) system. For this study, HCW structures were designed with a performance-based plastic design (PBPD) method. This approach directly accounts for inelastic structural behavior and considers design lateral force distribution at ultimate limit state. The design concept uses a pre-selected target drift and yield mechanism as key performance limit states. The yield mechanism consists of shear yielding in the coupling beams and flexural yielding of reinforced concrete walls at the bases. HCW structures with varying heights and coupling ratios (CRs) were designed and subjected to a series of nonlinear dynamic analyses. The results indicated that the CR strongly influences the response of the structure. The structures could also be under-designed when the inelastic distribution of lateral forces owing to higher modes was not properly considered. Finally, a design method to account for higher mode effects within the PBPD framework was presented. The method was validated using the results from nonlinear analyses. Copyright ฉ 2016 John Wiley & Sons, Ltd. Copyright ฉ 2016 John Wiley & Sons, Ltd.
Keywords
coupling ratios, flexural yielding, hybrid coupled wall, shear yielding, yield mechanism
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