Mechanism and optimum design of shared tuned mass damper for twin-tower structures connected at the top by an isolated corridor

Lyu, Q; Lu, W; Wang, W; Chen, Y

Mechanism and optimum design of shared tuned mass damper for twin-tower structures connected at the top by an isolated corridor

Lyu, Q Lu, W Wang, W

Chen, Y

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Publisher:: WILEY
Publication Type:: Journal Article
Citation:: Structural Design of Tall and Special Buildings, 2020, 29, (8)
Issue Date:: 2020-06-10

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Field	Value	Language
dc.contributor.author	Lyu, Q
dc.contributor.author	Lu, W
dc.contributor.author	Wang, W https://orcid.org/0000-0003-2782-8652
dc.contributor.author	Chen, Y
dc.date.accessioned	2021-02-28T22:36:36Z
dc.date.available	2021-02-28T22:36:36Z
dc.date.issued	2020-06-10
dc.identifier.citation	Structural Design of Tall and Special Buildings, 2020, 29, (8)
dc.identifier.issn	1541-7794
dc.identifier.issn	1541-7808
dc.identifier.uri	http://hdl.handle.net/10453/146535
dc.description.abstract	© 2020 John Wiley & Sons, Ltd. The concept of shared tuned mass damper (STMD) for twin towers linked by a sky corridor using flexible joints is proposed in this paper. The analytical expressions of the transform functions and random earthquake responses of the flexibly connected structures are derived using a three-degrees-of-freedom model system. The seismic reduction mechanism of the STMD is revealed using comparative analysis between the structures with STMD and those connected using a viscoelastic damper. The effect of the nondimensional parameters such as the frequency ratio of the two primary structures, mass ratio, tuning frequency ratio of the corridor, and damping ratio of the passive control devices on the structural seismic response is investigated. Optimum parametric analysis is performed using the principle of minimizing the displacements of both towers, and the optimal parameter formulas are established. Numerical analysis is conducted to verify the control effectiveness of the connected multi-degree-of-freedom system subjected to the El Centro earthquake ground motion. The results show that the earthquake responses of the towers can be effectively reduced if the parameters of the flexible connecting elements are appropriately selected for a certain corridor mass. Moreover, a remarkable seismic reduction effect can be achieved if the towers have similar dynamic properties.
dc.language	English
dc.publisher	WILEY
dc.relation.ispartof	Structural Design of Tall and Special Buildings
dc.relation.isbasedon	10.1002/tal.1728
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering
dc.subject.classification	Civil Engineering
dc.title	Mechanism and optimum design of shared tuned mass damper for twin-tower structures connected at the top by an isolated corridor
dc.type	Journal Article
utslib.citation.volume	29
utslib.for	0905 Civil Engineering
utslib.for	0905 Civil Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2021-02-28T22:36:29Z
pubs.issue	8
pubs.publication-status	Published
pubs.volume	29
utslib.citation.issue	8

Abstract:

© 2020 John Wiley & Sons, Ltd. The concept of shared tuned mass damper (STMD) for twin towers linked by a sky corridor using flexible joints is proposed in this paper. The analytical expressions of the transform functions and random earthquake responses of the flexibly connected structures are derived using a three-degrees-of-freedom model system. The seismic reduction mechanism of the STMD is revealed using comparative analysis between the structures with STMD and those connected using a viscoelastic damper. The effect of the nondimensional parameters such as the frequency ratio of the two primary structures, mass ratio, tuning frequency ratio of the corridor, and damping ratio of the passive control devices on the structural seismic response is investigated. Optimum parametric analysis is performed using the principle of minimizing the displacements of both towers, and the optimal parameter formulas are established. Numerical analysis is conducted to verify the control effectiveness of the connected multi-degree-of-freedom system subjected to the El Centro earthquake ground motion. The results show that the earthquake responses of the towers can be effectively reduced if the parameters of the flexible connecting elements are appropriately selected for a certain corridor mass. Moreover, a remarkable seismic reduction effect can be achieved if the towers have similar dynamic properties.

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http://hdl.handle.net/10453/146535