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High-strength steel frames with SMA connections in self-centring energy-dissipation bays: Insights and a multimodal nonlinear static procedure
Ke,Ke1,2; Yam,Michael C.H.3,4; Zhang,Huanyang2; Lam,Angus C.C.5; Zhou,Xuhong1,2
2020-12-01
Source PublicationSmart Materials and Structures
ISSN0964-1726
Volume29Issue:12Pages:125020
Abstract

This study explores the effectiveness of shape-memory-alloy (SMA)-based self-centring energy-dissipation bays (SCEDBs) for enhancing the seismic performance of high-strength-steel (HSS) frames. The work commences with the development of an ensemble of prototype HSS frames equipped with SCEDBs, known as HSSF-SCEDB structures. The prototype systems are examined using cyclic-pushover and nonlinear-response-history analyses (NL-RHAs). According to the analysis database, it is found that the cyclic-pushover responses generally show a typical flag shape over a wide deformation range and that the post-earthquake residual deformations are below 0.5%, even following maximum interstorey drifts beyond the codified deformation threshold (i.e. 2%). To offer a practical tool to engineers for damage-control behaviour evaluation and seismic demand estimation, we develop a multimodal nonlinear static procedure based on a modified energy-balance concept. Conventional procedures relating to the fundamental vibration mode are also revisited. The results indicate that a medium-rise HSSF-SCEDB may be appreciably influenced by higher vibration modes. The difference between the average maximum interstorey drifts calculated by NL-RHAs and those obtained using the proposed procedure for an ensemble of earthquake motions is generally below 5%, and the adequacy of the proposed method is confirmed.

KeywordEnergy Dissipation Bay High Strength Steel Nonlinear Static Procedure Self-centring Shape Memory Alloy
DOI10.1088/1361-665X/abc147
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaInstruments & Instrumentation ; Materials Science
WOS SubjectInstruments & Instrumentation ; Materials Science, Multidisciplinary
WOS IDWOS:000594674100001
Scopus ID2-s2.0-85096747307
Fulltext Access
FWCI2.9908657
Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorKe,Ke
Affiliation1.Key Laboratory of New Technology for Construction of Cities in Mountain Area,School of Civil Engineering,Chongqing University,Chongqing,China
2.Hunan Provincial Key Laboratory on Damage Diagnosis for Engineering Structures,Hunan University,Changsha,China
3.Department of Building and Real Estate,Hong Kong Polytechnic University,Hong Kong,Hong Kong
4.Chinese National Engineering Research Centre for Steel Construction (Hong Kong Branch),Hong Kong Polytechnic University,Hong Kong,Hong Kong
5.Department of Civil and Environmental Engineering,University of Macau,Macao
Recommended Citation
GB/T 7714
Ke,Ke,Yam,Michael C.H.,Zhang,Huanyang,et al. High-strength steel frames with SMA connections in self-centring energy-dissipation bays: Insights and a multimodal nonlinear static procedure[J]. Smart Materials and Structures,2020,29(12):125020.
APA Ke,Ke,Yam,Michael C.H.,Zhang,Huanyang,Lam,Angus C.C.,&Zhou,Xuhong.(2020).High-strength steel frames with SMA connections in self-centring energy-dissipation bays: Insights and a multimodal nonlinear static procedure.Smart Materials and Structures,29(12),125020.
MLA Ke,Ke,et al."High-strength steel frames with SMA connections in self-centring energy-dissipation bays: Insights and a multimodal nonlinear static procedure".Smart Materials and Structures 29.12(2020):125020.
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