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Article: Seismic retrofit analysis of concrete coupled shear wall structures with laterally restrained steel plate coupling beams

TitleSeismic retrofit analysis of concrete coupled shear wall structures with laterally restrained steel plate coupling beams
Authors
Issue Date2018
PublisherSAGE PUBLICATIONS INC. The Journal's web site is located at http://ase.sagepub.com/
Citation
Advances in Structural Engineering, 2018, v. 21, p. 962-974 How to Cite?
AbstractMany existing deep reinforced concrete coupling beams that have low span-to-depth ratios are not desirable for seismic design due to their potential brittle failure with limited ductility and deformability. Previous experimental and numerical studies have demonstrated that the laterally restrained steel plate retrofitting method could effectively enhance the seismic performance of deep coupling beams. This article aims to develop a nonlinear finite element model based on the OpenSees software to accurately predict the behavior of coupled shear walls with or without laterally restrained steel plate coupling beams. The numerical results reveal that the seismic performance of the laterally restrained steel plate retrofitted coupled shear walls can be significantly enhanced. Furthermore, a genetic algorithm is adopted to determine the optimal positions of laterally restrained steel plate coupling beams. It is found that desirable seismic performance can be achieved by retrofitting coupling beams in the middle and higher floors of a building with coupled shear walls. However, only retrofitting coupling beams on the lower floors should be avoided because this could result in the serious degradation of the lateral load-carrying capacity and stiffness of the coupled shear walls.
Persistent Identifierhttp://hdl.handle.net/10722/254936

 

DC FieldValueLanguage
dc.contributor.authorCheng, B-
dc.contributor.authorYang, CT-
dc.contributor.authorSu, KL-
dc.date.accessioned2018-06-21T01:08:53Z-
dc.date.available2018-06-21T01:08:53Z-
dc.date.issued2018-
dc.identifier.citationAdvances in Structural Engineering, 2018, v. 21, p. 962-974-
dc.identifier.urihttp://hdl.handle.net/10722/254936-
dc.description.abstractMany existing deep reinforced concrete coupling beams that have low span-to-depth ratios are not desirable for seismic design due to their potential brittle failure with limited ductility and deformability. Previous experimental and numerical studies have demonstrated that the laterally restrained steel plate retrofitting method could effectively enhance the seismic performance of deep coupling beams. This article aims to develop a nonlinear finite element model based on the OpenSees software to accurately predict the behavior of coupled shear walls with or without laterally restrained steel plate coupling beams. The numerical results reveal that the seismic performance of the laterally restrained steel plate retrofitted coupled shear walls can be significantly enhanced. Furthermore, a genetic algorithm is adopted to determine the optimal positions of laterally restrained steel plate coupling beams. It is found that desirable seismic performance can be achieved by retrofitting coupling beams in the middle and higher floors of a building with coupled shear walls. However, only retrofitting coupling beams on the lower floors should be avoided because this could result in the serious degradation of the lateral load-carrying capacity and stiffness of the coupled shear walls.-
dc.languageeng-
dc.publisherSAGE PUBLICATIONS INC. The Journal's web site is located at http://ase.sagepub.com/-
dc.relation.ispartofAdvances in Structural Engineering-
dc.titleSeismic retrofit analysis of concrete coupled shear wall structures with laterally restrained steel plate coupling beams-
dc.typeArticle-
dc.identifier.emailSu, KL: klsu@hkucc.hku.hk-
dc.identifier.authoritySu, KL=rp00072-
dc.identifier.doi10.1177/1369433217735932-
dc.identifier.hkuros285581-
dc.identifier.volume21-
dc.identifier.spage962-
dc.identifier.epage974-
dc.publisher.placeCA, USA-

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