MTMDI for Mitigating Wind-Induced Responses of Linked High-Rise Buildings
Publication: Journal of Structural Engineering
Volume 147, Issue 4
Abstract
The present work proposes a new multituned mass damper inerter (MTMDI) system to reduce the wind-induced responses of linked high-rise buildings. In the proposed system, two high-rise buildings are linked to each other by two tuned mass-damper-inserters (TMDIs). Such a system exploits the large relative motion between two-linked buildings (TLBs) by using an inerter to reduce the individual building’s acceleration responses. In this paper, a model of the TLBs with the MTMDI under wind loads is proposed, and the model involves three additional scenarios, including a single TMDI in TLBs, each building separately equipped with TMDIs and tuned mass dampers (TMDs). Wind-induced responses of the TLBs are estimated based on wind loads obtained from wind tunnel tests of synchronous multipoint pressure measurements. The performance of the MTMDI system with optimal parameters obtained by the multiobjective optimization method is compared with that of the other three scenarios. The results demonstrate the effectiveness of the optimal MTMDI system in terms of mitigating acceleration responses with less requirement of total mass, which makes the MTMDI system more efficient and an attractive alternative to the other scenarios.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request. The list of available MATLAB codes (upon request) is as follows:
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Main_CMA—Main program to calculate the transfer function and acceleration responses;
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no_connection_MCK—To calculate the M,C,K matrices for the original structure;
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no_connection_MCK_TMDI1—To calculate the M,C,K matrices for the structure with the installed TMDI-1;
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no_connection_MCK_TMDI—To calculate the M,C,K matrices for the structure with the installed TMDI- 1, 2;
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Ray1—To calculate the damping matrix for Building-1; and
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Ray2—To calculate the damping matrix for Building-2.
References
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© 2021 American Society of Civil Engineers.
History
Received: Jul 29, 2019
Accepted: Oct 21, 2020
Published online: Feb 1, 2021
Published in print: Apr 1, 2021
Discussion open until: Jul 1, 2021
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