Numerical investigation of a proposed multidimensional isolator applied to large-scale domes subjected to earthquakes

Zhang, H; Li, H; Wang, H; Zhu, X

Numerical investigation of a proposed multidimensional isolator applied to large-scale domes subjected to earthquakes

Zhang, H Li, H Wang, H Zhu, X

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Soil Dynamics and Earthquake Engineering, 2023, 175
Issue Date:: 2023-12-01

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Field	Value	Language
dc.contributor.author	Zhang, H
dc.contributor.author	Li, H
dc.contributor.author	Wang, H
dc.contributor.author	Zhu, X https://orcid.org/0000-0001-5083-9320
dc.date.accessioned	2024-04-23T01:44:19Z
dc.date.available	2024-04-23T01:44:19Z
dc.date.issued	2023-12-01
dc.identifier.citation	Soil Dynamics and Earthquake Engineering, 2023, 175
dc.identifier.issn	0267-7261
dc.identifier.issn	1879-341X
dc.identifier.uri	http://hdl.handle.net/10453/178251
dc.description.abstract	A three-dimensional seismic isolation device that is effective in isolating both horizontal and vertical earthquake components has drawn the interest of researchers in recent years. This paper proposes a new three-dimensional isolator for large-scale dome structures, which is composed of a quintuple friction pendulum component and a stacked disc spring component in series in the vertical direction. The complex working characteristics of these components are investigated in detail. Numerical modeling methods are proposed to simulate this isolator for engineering application purposes, and the model accuracy is validated based on theory and experiments. Thus, the isolator is applied to a large-scale dome structure subjected to near- and far-fault ground motions. Numerical analysis shows that the proposed modeling methods can efficiently analyze the isolation performance of the isolator in a large-scale structure. The numerical results demonstrate that the isolator has excellent isolation performance not only for displacement and axial force demands but also for velocity and acceleration demands in all three directions. In addition, according to the comparative study of this paper, the isolation performance of the proposed isolator is better than that of other types of isolators under major earthquakes due to the adaptive sliding characteristics of the quintuple friction pendulum component and the flexibility of the stacked disc spring component prolonging the structural periods.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation.ispartof	Soil Dynamics and Earthquake Engineering
dc.relation.isbasedon	10.1016/j.soildyn.2023.108252
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0404 Geophysics, 0905 Civil Engineering
dc.subject.classification	Strategic, Defence & Security Studies
dc.subject.classification	4005 Civil engineering
dc.title	Numerical investigation of a proposed multidimensional isolator applied to large-scale domes subjected to earthquakes
dc.type	Journal Article
utslib.citation.volume	175
utslib.for	0404 Geophysics
utslib.for	0905 Civil Engineering
pubs.organisational-group	University of Technology Sydney
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
utslib.copyright.status	embargoed	*
utslib.copyright.embargo	2025-12-01T00:00:00+1000Z
dc.date.updated	2024-04-23T01:44:17Z
pubs.publication-status	Published
pubs.volume	175

Abstract:

A three-dimensional seismic isolation device that is effective in isolating both horizontal and vertical earthquake components has drawn the interest of researchers in recent years. This paper proposes a new three-dimensional isolator for large-scale dome structures, which is composed of a quintuple friction pendulum component and a stacked disc spring component in series in the vertical direction. The complex working characteristics of these components are investigated in detail. Numerical modeling methods are proposed to simulate this isolator for engineering application purposes, and the model accuracy is validated based on theory and experiments. Thus, the isolator is applied to a large-scale dome structure subjected to near- and far-fault ground motions. Numerical analysis shows that the proposed modeling methods can efficiently analyze the isolation performance of the isolator in a large-scale structure. The numerical results demonstrate that the isolator has excellent isolation performance not only for displacement and axial force demands but also for velocity and acceleration demands in all three directions. In addition, according to the comparative study of this paper, the isolation performance of the proposed isolator is better than that of other types of isolators under major earthquakes due to the adaptive sliding characteristics of the quintuple friction pendulum component and the flexibility of the stacked disc spring component prolonging the structural periods.

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http://hdl.handle.net/10453/178251